./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.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_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/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_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/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_faca2f13-fb13-4ae0-b5d4-586137fc53aa/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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- 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 21:46:01,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:46:01,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:46:01,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:46:01,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:46:01,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:46:01,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:46:01,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:46:01,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:46:01,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:46:01,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:46:01,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:46:01,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:46:01,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:46:01,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:46:01,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:46:01,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:46:01,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:46:01,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:46:01,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:46:01,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:46:01,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:46:01,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:46:01,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:46:01,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:46:01,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:46:01,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:46:01,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:46:01,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:46:01,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:46:01,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:46:01,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:46:01,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:46:01,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:46:01,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:46:01,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:46:01,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:46:01,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:46:01,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:46:01,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:46:01,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:46:01,337 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 21:46:01,353 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:46:01,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:46:01,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:46:01,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:46:01,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:46:01,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:46:01,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:46:01,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:46:01,354 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:46:01,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:46:01,355 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:46:01,355 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:46:01,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:46:01,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:46:01,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:46:01,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:46:01,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:46:01,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:46:01,356 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 21:46:01,356 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:46:01,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:46:01,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:46:01,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:46:01,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:46:01,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:46:01,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:46:01,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:46:01,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:46:01,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:46:01,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:46:01,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:46:01,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:46:01,358 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:46:01,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:46:01,358 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:46:01,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:46:01,358 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:46:01,358 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_faca2f13-fb13-4ae0-b5d4-586137fc53aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2022-12-13 21:46:01,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:46:01,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:46:01,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:46:01,536 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:46:01,536 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:46:01,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-12-13 21:46:04,040 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:46:04,264 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:46:04,264 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-12-13 21:46:04,276 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/data/b75487c6f/d632f9f98b8440229bb7b19fc617c944/FLAGa833f6b68 [2022-12-13 21:46:04,603 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/data/b75487c6f/d632f9f98b8440229bb7b19fc617c944 [2022-12-13 21:46:04,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:46:04,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:46:04,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:46:04,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:46:04,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:46:04,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:04,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576cf33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04, skipping insertion in model container [2022-12-13 21:46:04,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:04,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:46:04,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:46:04,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:46:04,905 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:46:04,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:46:04,968 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:46:04,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04 WrapperNode [2022-12-13 21:46:04,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:46:04,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:46:04,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:46:04,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:46:04,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:04,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:05,001 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-12-13 21:46:05,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:46:05,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:46:05,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:46:05,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:46:05,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:05,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:05,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:05,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:05,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:05,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:05,020 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:05,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:05,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:46:05,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:46:05,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:46:05,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:46:05,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04" (1/1) ... [2022-12-13 21:46:05,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:46:05,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:46:05,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:46:05,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:46:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:46:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:46:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:46:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:46:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 21:46:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:46:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 21:46:05,083 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 21:46:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:46:05,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:46:05,085 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 21:46:05,187 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:46:05,189 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:46:05,322 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:46:05,327 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:46:05,327 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 21:46:05,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:46:05 BoogieIcfgContainer [2022-12-13 21:46:05,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:46:05,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:46:05,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:46:05,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:46:05,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:46:04" (1/3) ... [2022-12-13 21:46:05,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f2083e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:46:05, skipping insertion in model container [2022-12-13 21:46:05,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:46:04" (2/3) ... [2022-12-13 21:46:05,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f2083e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:46:05, skipping insertion in model container [2022-12-13 21:46:05,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:46:05" (3/3) ... [2022-12-13 21:46:05,335 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2022-12-13 21:46:05,341 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:46:05,348 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:46:05,349 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 21:46:05,349 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:46:05,389 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:46:05,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions, 179 flow [2022-12-13 21:46:05,442 INFO L130 PetriNetUnfolder]: 4/86 cut-off events. [2022-12-13 21:46:05,443 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:46:05,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 4/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-12-13 21:46:05,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 87 transitions, 179 flow [2022-12-13 21:46:05,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 86 transitions, 175 flow [2022-12-13 21:46:05,452 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:46:05,459 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 86 transitions, 175 flow [2022-12-13 21:46:05,461 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 86 transitions, 175 flow [2022-12-13 21:46:05,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 86 transitions, 175 flow [2022-12-13 21:46:05,475 INFO L130 PetriNetUnfolder]: 4/86 cut-off events. [2022-12-13 21:46:05,476 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:46:05,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 4/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-12-13 21:46:05,477 INFO L119 LiptonReduction]: Number of co-enabled transitions 1080 [2022-12-13 21:46:06,930 INFO L134 LiptonReduction]: Checked pairs total: 1378 [2022-12-13 21:46:06,930 INFO L136 LiptonReduction]: Total number of compositions: 89 [2022-12-13 21:46:06,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:46:06,946 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;@116957ad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:46:06,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-13 21:46:06,948 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 21:46:06,948 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:46:06,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:06,949 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:46:06,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 21:46:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash 10598, now seen corresponding path program 1 times [2022-12-13 21:46:06,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:06,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662931516] [2022-12-13 21:46:06,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:06,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:07,095 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 21:46:07,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:07,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662931516] [2022-12-13 21:46:07,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662931516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:07,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:07,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:46:07,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706111128] [2022-12-13 21:46:07,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:07,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:46:07,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:07,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:46:07,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:46:07,140 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2022-12-13 21:46:07,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 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 21:46:07,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:07,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2022-12-13 21:46:07,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:07,187 INFO L130 PetriNetUnfolder]: 37/88 cut-off events. [2022-12-13 21:46:07,187 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:46:07,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 88 events. 37/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 280 event pairs, 36 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 168. Up to 88 conditions per place. [2022-12-13 21:46:07,189 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2022-12-13 21:46:07,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 67 flow [2022-12-13 21:46:07,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:46:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:46:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2022-12-13 21:46:07,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2022-12-13 21:46:07,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2022-12-13 21:46:07,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2022-12-13 21:46:07,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:07,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2022-12-13 21:46:07,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 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 21:46:07,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 21:46:07,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 21:46:07,209 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 39 flow. Second operand 3 states and 255 transitions. [2022-12-13 21:46:07,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 67 flow [2022-12-13 21:46:07,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:46:07,213 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 36 flow [2022-12-13 21:46:07,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2022-12-13 21:46:07,217 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2022-12-13 21:46:07,217 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 36 flow [2022-12-13 21:46:07,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 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 21:46:07,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:07,217 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:46:07,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:46:07,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 21:46:07,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:07,218 INFO L85 PathProgramCache]: Analyzing trace with hash 316898595, now seen corresponding path program 1 times [2022-12-13 21:46:07,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:07,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831553100] [2022-12-13 21:46:07,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:07,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:07,265 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 21:46:07,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:07,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831553100] [2022-12-13 21:46:07,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831553100] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:07,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:07,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:46:07,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533746370] [2022-12-13 21:46:07,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:07,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:46:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:07,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:46:07,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:46:07,277 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2022-12-13 21:46:07,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 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 21:46:07,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:07,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2022-12-13 21:46:07,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:07,314 INFO L130 PetriNetUnfolder]: 37/89 cut-off events. [2022-12-13 21:46:07,315 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:46:07,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 89 events. 37/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 280 event pairs, 36 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 178. Up to 89 conditions per place. [2022-12-13 21:46:07,315 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 15 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2022-12-13 21:46:07,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 72 flow [2022-12-13 21:46:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:46:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:46:07,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2022-12-13 21:46:07,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2022-12-13 21:46:07,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2022-12-13 21:46:07,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2022-12-13 21:46:07,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:07,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2022-12-13 21:46:07,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 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 21:46:07,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 21:46:07,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 21:46:07,319 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 36 flow. Second operand 3 states and 255 transitions. [2022-12-13 21:46:07,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 72 flow [2022-12-13 21:46:07,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 71 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:46:07,320 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 47 flow [2022-12-13 21:46:07,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2022-12-13 21:46:07,321 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2022-12-13 21:46:07,321 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 47 flow [2022-12-13 21:46:07,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 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 21:46:07,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:07,321 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:46:07,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:46:07,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 21:46:07,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:07,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1226301009, now seen corresponding path program 1 times [2022-12-13 21:46:07,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:07,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161089621] [2022-12-13 21:46:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:07,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:07,377 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 21:46:07,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:07,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161089621] [2022-12-13 21:46:07,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161089621] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:46:07,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064960475] [2022-12-13 21:46:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:07,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:46:07,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:46:07,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:46:07,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:46:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:07,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:46:07,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:46:07,462 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 21:46:07,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:46:07,476 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 21:46:07,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064960475] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:46:07,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:46:07,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 21:46:07,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395653450] [2022-12-13 21:46:07,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:46:07,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:46:07,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:07,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:46:07,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:46:07,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2022-12-13 21:46:07,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 47 flow. Second operand has 6 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 0 states have call successors, (0), 0 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 21:46:07,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:07,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2022-12-13 21:46:07,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:07,541 INFO L130 PetriNetUnfolder]: 37/92 cut-off events. [2022-12-13 21:46:07,542 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:46:07,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 92 events. 37/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 280 event pairs, 36 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 191. Up to 89 conditions per place. [2022-12-13 21:46:07,542 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 15 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2022-12-13 21:46:07,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 20 transitions, 99 flow [2022-12-13 21:46:07,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:46:07,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:46:07,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 491 transitions. [2022-12-13 21:46:07,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4649621212121212 [2022-12-13 21:46:07,545 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 491 transitions. [2022-12-13 21:46:07,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 491 transitions. [2022-12-13 21:46:07,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:07,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 491 transitions. [2022-12-13 21:46:07,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 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 21:46:07,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 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 21:46:07,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 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 21:46:07,548 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 47 flow. Second operand 6 states and 491 transitions. [2022-12-13 21:46:07,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 20 transitions, 99 flow [2022-12-13 21:46:07,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 95 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 21:46:07,549 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 79 flow [2022-12-13 21:46:07,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2022-12-13 21:46:07,550 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 8 predicate places. [2022-12-13 21:46:07,550 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 79 flow [2022-12-13 21:46:07,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 0 states have call successors, (0), 0 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 21:46:07,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:07,550 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2022-12-13 21:46:07,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:46:07,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:46:07,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 21:46:07,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:07,754 INFO L85 PathProgramCache]: Analyzing trace with hash 763975843, now seen corresponding path program 2 times [2022-12-13 21:46:07,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:07,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813951675] [2022-12-13 21:46:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:07,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:46:07,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:07,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813951675] [2022-12-13 21:46:07,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813951675] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:46:07,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073882] [2022-12-13 21:46:07,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:46:07,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:46:07,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:46:07,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:46:07,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:46:08,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:46:08,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:46:08,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:46:08,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:46:08,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-13 21:46:08,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:46:08,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-12-13 21:46:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 21:46:08,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:46:08,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073882] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:08,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:46:08,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2022-12-13 21:46:08,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506892110] [2022-12-13 21:46:08,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:08,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:46:08,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:08,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:46:08,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:46:08,148 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2022-12-13 21:46:08,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 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 21:46:08,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:08,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2022-12-13 21:46:08,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:08,191 INFO L130 PetriNetUnfolder]: 21/60 cut-off events. [2022-12-13 21:46:08,191 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:46:08,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 60 events. 21/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 138 event pairs, 10 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 136. Up to 41 conditions per place. [2022-12-13 21:46:08,191 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 19 selfloop transitions, 3 changer transitions 4/26 dead transitions. [2022-12-13 21:46:08,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 143 flow [2022-12-13 21:46:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:46:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:46:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2022-12-13 21:46:08,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2022-12-13 21:46:08,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2022-12-13 21:46:08,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2022-12-13 21:46:08,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:08,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2022-12-13 21:46:08,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 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 21:46:08,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 21:46:08,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 21:46:08,195 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 79 flow. Second operand 3 states and 260 transitions. [2022-12-13 21:46:08,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 143 flow [2022-12-13 21:46:08,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 129 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 21:46:08,196 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 82 flow [2022-12-13 21:46:08,196 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2022-12-13 21:46:08,197 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 10 predicate places. [2022-12-13 21:46:08,197 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 82 flow [2022-12-13 21:46:08,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 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 21:46:08,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:08,197 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:46:08,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:46:08,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:46:08,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 21:46:08,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:08,398 INFO L85 PathProgramCache]: Analyzing trace with hash 573043669, now seen corresponding path program 1 times [2022-12-13 21:46:08,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:08,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127936492] [2022-12-13 21:46:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:08,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:46:08,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:08,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127936492] [2022-12-13 21:46:08,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127936492] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:46:08,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906547187] [2022-12-13 21:46:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:08,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:46:08,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:46:08,476 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:46:08,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:46:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:08,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:46:08,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:46:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:46:08,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:46:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:46:08,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906547187] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:46:08,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:46:08,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-13 21:46:08,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5403817] [2022-12-13 21:46:08,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:46:08,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:46:08,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:08,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:46:08,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:46:08,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2022-12-13 21:46:08,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 82 flow. Second operand has 12 states, 12 states have (on average 79.5) internal successors, (954), 12 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 21:46:08,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:08,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2022-12-13 21:46:08,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:08,668 INFO L130 PetriNetUnfolder]: 17/58 cut-off events. [2022-12-13 21:46:08,668 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-12-13 21:46:08,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 58 events. 17/58 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 117 event pairs, 16 based on Foata normal form. 6/60 useless extension candidates. Maximal degree in co-relation 158. Up to 49 conditions per place. [2022-12-13 21:46:08,669 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 15 selfloop transitions, 11 changer transitions 0/26 dead transitions. [2022-12-13 21:46:08,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 170 flow [2022-12-13 21:46:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:46:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 21:46:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 968 transitions. [2022-12-13 21:46:08,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2022-12-13 21:46:08,672 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 968 transitions. [2022-12-13 21:46:08,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 968 transitions. [2022-12-13 21:46:08,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:08,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 968 transitions. [2022-12-13 21:46:08,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 80.66666666666667) internal successors, (968), 12 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:08,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 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 21:46:08,681 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 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 21:46:08,681 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 82 flow. Second operand 12 states and 968 transitions. [2022-12-13 21:46:08,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 170 flow [2022-12-13 21:46:08,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 26 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:46:08,683 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 163 flow [2022-12-13 21:46:08,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=163, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2022-12-13 21:46:08,684 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 26 predicate places. [2022-12-13 21:46:08,684 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 163 flow [2022-12-13 21:46:08,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 79.5) internal successors, (954), 12 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 21:46:08,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:08,685 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:46:08,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:46:08,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:46:08,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 21:46:08,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:08,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1577915755, now seen corresponding path program 2 times [2022-12-13 21:46:08,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:08,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853969449] [2022-12-13 21:46:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:08,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 21:46:09,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:09,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853969449] [2022-12-13 21:46:09,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853969449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:09,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:09,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:46:09,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834528704] [2022-12-13 21:46:09,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:09,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:46:09,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:46:09,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:46:09,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 176 [2022-12-13 21:46:09,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 163 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:09,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:09,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 176 [2022-12-13 21:46:09,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:09,466 INFO L130 PetriNetUnfolder]: 16/55 cut-off events. [2022-12-13 21:46:09,466 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-12-13 21:46:09,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 55 events. 16/55 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 112 event pairs, 4 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 167. Up to 21 conditions per place. [2022-12-13 21:46:09,466 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 25 selfloop transitions, 5 changer transitions 5/35 dead transitions. [2022-12-13 21:46:09,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 35 transitions, 253 flow [2022-12-13 21:46:09,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:46:09,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:46:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 453 transitions. [2022-12-13 21:46:09,468 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2022-12-13 21:46:09,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 453 transitions. [2022-12-13 21:46:09,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 453 transitions. [2022-12-13 21:46:09,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:09,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 453 transitions. [2022-12-13 21:46:09,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 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 21:46:09,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 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 21:46:09,471 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 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 21:46:09,471 INFO L175 Difference]: Start difference. First operand has 47 places, 26 transitions, 163 flow. Second operand 6 states and 453 transitions. [2022-12-13 21:46:09,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 35 transitions, 253 flow [2022-12-13 21:46:09,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 35 transitions, 205 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-12-13 21:46:09,474 INFO L231 Difference]: Finished difference. Result has 46 places, 25 transitions, 121 flow [2022-12-13 21:46:09,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=121, PETRI_PLACES=46, PETRI_TRANSITIONS=25} [2022-12-13 21:46:09,474 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2022-12-13 21:46:09,474 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 25 transitions, 121 flow [2022-12-13 21:46:09,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:09,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:09,475 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:46:09,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:46:09,475 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 21:46:09,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:09,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1577915754, now seen corresponding path program 1 times [2022-12-13 21:46:09,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:09,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903774015] [2022-12-13 21:46:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:09,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:09,706 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 21:46:09,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:09,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903774015] [2022-12-13 21:46:09,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903774015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:09,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:09,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:46:09,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777058653] [2022-12-13 21:46:09,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:09,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:46:09,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:09,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:46:09,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:46:09,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 176 [2022-12-13 21:46:09,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 25 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:09,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:09,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 176 [2022-12-13 21:46:09,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:09,865 INFO L130 PetriNetUnfolder]: 13/48 cut-off events. [2022-12-13 21:46:09,865 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-12-13 21:46:09,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 48 events. 13/48 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 80 event pairs, 4 based on Foata normal form. 2/48 useless extension candidates. Maximal degree in co-relation 138. Up to 21 conditions per place. [2022-12-13 21:46:09,866 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 20 selfloop transitions, 2 changer transitions 9/31 dead transitions. [2022-12-13 21:46:09,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 31 transitions, 193 flow [2022-12-13 21:46:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:46:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:46:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 449 transitions. [2022-12-13 21:46:09,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4251893939393939 [2022-12-13 21:46:09,868 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 449 transitions. [2022-12-13 21:46:09,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 449 transitions. [2022-12-13 21:46:09,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:09,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 449 transitions. [2022-12-13 21:46:09,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 21:46:09,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 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 21:46:09,870 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 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 21:46:09,870 INFO L175 Difference]: Start difference. First operand has 46 places, 25 transitions, 121 flow. Second operand 6 states and 449 transitions. [2022-12-13 21:46:09,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 31 transitions, 193 flow [2022-12-13 21:46:09,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 31 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 21:46:09,871 INFO L231 Difference]: Finished difference. Result has 46 places, 21 transitions, 103 flow [2022-12-13 21:46:09,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=46, PETRI_TRANSITIONS=21} [2022-12-13 21:46:09,872 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2022-12-13 21:46:09,872 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 21 transitions, 103 flow [2022-12-13 21:46:09,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:09,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:09,872 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:46:09,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:46:09,872 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 21:46:09,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:09,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1577901714, now seen corresponding path program 1 times [2022-12-13 21:46:09,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:09,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471742212] [2022-12-13 21:46:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:09,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 21:46:10,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:10,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471742212] [2022-12-13 21:46:10,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471742212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:10,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:10,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:46:10,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327638748] [2022-12-13 21:46:10,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:10,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:46:10,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:10,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:46:10,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:46:10,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 176 [2022-12-13 21:46:10,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 21 transitions, 103 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:10,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:10,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 176 [2022-12-13 21:46:10,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:10,215 INFO L130 PetriNetUnfolder]: 8/36 cut-off events. [2022-12-13 21:46:10,215 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-12-13 21:46:10,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 36 events. 8/36 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 34 event pairs, 2 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 104. Up to 18 conditions per place. [2022-12-13 21:46:10,216 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 20 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2022-12-13 21:46:10,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 25 transitions, 163 flow [2022-12-13 21:46:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:46:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:46:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2022-12-13 21:46:10,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42159090909090907 [2022-12-13 21:46:10,218 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2022-12-13 21:46:10,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2022-12-13 21:46:10,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:10,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2022-12-13 21:46:10,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 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 21:46:10,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 21:46:10,221 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 21:46:10,221 INFO L175 Difference]: Start difference. First operand has 46 places, 21 transitions, 103 flow. Second operand 5 states and 371 transitions. [2022-12-13 21:46:10,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 25 transitions, 163 flow [2022-12-13 21:46:10,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 25 transitions, 157 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:46:10,223 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 125 flow [2022-12-13 21:46:10,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2022-12-13 21:46:10,223 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 21 predicate places. [2022-12-13 21:46:10,224 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 125 flow [2022-12-13 21:46:10,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:10,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:10,224 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:46:10,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:46:10,224 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 21:46:10,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:10,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1619149965, now seen corresponding path program 1 times [2022-12-13 21:46:10,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:10,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117567489] [2022-12-13 21:46:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:10,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 21:46:10,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:10,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117567489] [2022-12-13 21:46:10,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117567489] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:10,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:10,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:46:10,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720255119] [2022-12-13 21:46:10,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:10,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:46:10,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:10,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:46:10,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:46:10,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2022-12-13 21:46:10,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 0 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 21:46:10,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:10,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2022-12-13 21:46:10,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:10,597 INFO L130 PetriNetUnfolder]: 5/31 cut-off events. [2022-12-13 21:46:10,598 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-12-13 21:46:10,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 31 events. 5/31 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 3 based on Foata normal form. 4/35 useless extension candidates. Maximal degree in co-relation 101. Up to 18 conditions per place. [2022-12-13 21:46:10,598 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 17 selfloop transitions, 3 changer transitions 2/22 dead transitions. [2022-12-13 21:46:10,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 22 transitions, 159 flow [2022-12-13 21:46:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:46:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:46:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 373 transitions. [2022-12-13 21:46:10,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4238636363636364 [2022-12-13 21:46:10,600 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 373 transitions. [2022-12-13 21:46:10,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 373 transitions. [2022-12-13 21:46:10,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:10,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 373 transitions. [2022-12-13 21:46:10,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 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 21:46:10,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 21:46:10,603 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 21:46:10,603 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 125 flow. Second operand 5 states and 373 transitions. [2022-12-13 21:46:10,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 22 transitions, 159 flow [2022-12-13 21:46:10,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 22 transitions, 151 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 21:46:10,605 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 105 flow [2022-12-13 21:46:10,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2022-12-13 21:46:10,606 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2022-12-13 21:46:10,606 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 105 flow [2022-12-13 21:46:10,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 0 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 21:46:10,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:10,606 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:46:10,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:46:10,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 21:46:10,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:10,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1619150004, now seen corresponding path program 2 times [2022-12-13 21:46:10,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:10,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637089110] [2022-12-13 21:46:10,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:10,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 21:46:10,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:10,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637089110] [2022-12-13 21:46:10,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637089110] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:10,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:10,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:46:10,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890802519] [2022-12-13 21:46:10,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:10,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:46:10,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:46:10,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:46:10,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2022-12-13 21:46:10,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 0 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 21:46:10,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:10,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2022-12-13 21:46:10,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:10,904 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2022-12-13 21:46:10,904 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 21:46:10,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 21 events. 2/21 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 1 based on Foata normal form. 2/23 useless extension candidates. Maximal degree in co-relation 70. Up to 15 conditions per place. [2022-12-13 21:46:10,905 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2022-12-13 21:46:10,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 19 transitions, 137 flow [2022-12-13 21:46:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:46:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:46:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2022-12-13 21:46:10,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2022-12-13 21:46:10,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 370 transitions. [2022-12-13 21:46:10,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 370 transitions. [2022-12-13 21:46:10,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:10,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 370 transitions. [2022-12-13 21:46:10,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 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 21:46:10,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 21:46:10,908 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 21:46:10,908 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 105 flow. Second operand 5 states and 370 transitions. [2022-12-13 21:46:10,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 19 transitions, 137 flow [2022-12-13 21:46:10,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 19 transitions, 126 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 21:46:10,909 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2022-12-13 21:46:10,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2022-12-13 21:46:10,909 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2022-12-13 21:46:10,909 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2022-12-13 21:46:10,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 0 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 21:46:10,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2022-12-13 21:46:10,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-12-13 21:46:10,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-12-13 21:46:10,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-12-13 21:46:10,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2022-12-13 21:46:10,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-12-13 21:46:10,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-12-13 21:46:10,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-12-13 21:46:10,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-12-13 21:46:10,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:46:10,912 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2022-12-13 21:46:10,916 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 21:46:10,916 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:46:10,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:46:10 BasicIcfg [2022-12-13 21:46:10,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:46:10,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:46:10,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:46:10,919 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:46:10,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:46:05" (3/4) ... [2022-12-13 21:46:10,921 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 21:46:10,926 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-13 21:46:10,928 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-12-13 21:46:10,928 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 21:46:10,928 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 21:46:10,948 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 21:46:10,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:46:10,949 INFO L158 Benchmark]: Toolchain (without parser) took 6343.19ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 124.9MB in the beginning and 60.0MB in the end (delta: 64.9MB). Peak memory consumption was 99.4MB. Max. memory is 16.1GB. [2022-12-13 21:46:10,949 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 104.9MB. Free memory is still 55.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:46:10,949 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.22ms. Allocated memory is still 161.5MB. Free memory was 124.9MB in the beginning and 97.1MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 21:46:10,950 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.18ms. Allocated memory is still 161.5MB. Free memory was 97.1MB in the beginning and 94.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:46:10,950 INFO L158 Benchmark]: Boogie Preprocessor took 20.14ms. Allocated memory is still 161.5MB. Free memory was 94.6MB in the beginning and 93.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:46:10,950 INFO L158 Benchmark]: RCFGBuilder took 306.32ms. Allocated memory is still 161.5MB. Free memory was 93.0MB in the beginning and 127.6MB in the end (delta: -34.6MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2022-12-13 21:46:10,950 INFO L158 Benchmark]: TraceAbstraction took 5588.08ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 126.9MB in the beginning and 62.1MB in the end (delta: 64.8MB). Peak memory consumption was 97.7MB. Max. memory is 16.1GB. [2022-12-13 21:46:10,950 INFO L158 Benchmark]: Witness Printer took 29.72ms. Allocated memory is still 195.0MB. Free memory was 62.1MB in the beginning and 60.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:46:10,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 104.9MB. Free memory is still 55.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.22ms. Allocated memory is still 161.5MB. Free memory was 124.9MB in the beginning and 97.1MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.18ms. Allocated memory is still 161.5MB. Free memory was 97.1MB in the beginning and 94.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.14ms. Allocated memory is still 161.5MB. Free memory was 94.6MB in the beginning and 93.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 306.32ms. Allocated memory is still 161.5MB. Free memory was 93.0MB in the beginning and 127.6MB in the end (delta: -34.6MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5588.08ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 126.9MB in the beginning and 62.1MB in the end (delta: 64.8MB). Peak memory consumption was 97.7MB. Max. memory is 16.1GB. * Witness Printer took 29.72ms. Allocated memory is still 195.0MB. Free memory was 62.1MB in the beginning and 60.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 86 PlacesBefore, 21 PlacesAfterwards, 86 TransitionsBefore, 18 TransitionsAfterwards, 1080 CoEnabledTransitionPairs, 5 FixpointIterations, 34 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 89 TotalNumberOfCompositions, 1378 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1036, independent: 971, independent conditional: 0, independent unconditional: 971, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 646, independent: 627, independent conditional: 0, independent unconditional: 627, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1036, independent: 344, independent conditional: 0, independent unconditional: 344, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 646, unknown conditional: 0, unknown unconditional: 646] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 112 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.5s, OverallIterations: 10, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 732 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 536 mSDsluCounter, 256 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 207 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 948 IncrementalHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 49 mSDtfsCounter, 948 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=5, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 151 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 1378 SizeOfPredicates, 2 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 285/328 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 21:46:10,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faca2f13-fb13-4ae0-b5d4-586137fc53aa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE