./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN --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 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d --- 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-6b4ec56 [2022-11-20 12:19:22,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:19:22,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:19:22,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:19:22,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:19:22,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:19:22,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:19:22,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:19:22,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:19:22,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:19:22,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:19:22,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:19:22,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:19:22,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:19:22,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:19:22,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:19:22,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:19:22,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:19:22,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:19:22,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:19:22,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:19:22,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:19:22,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:19:22,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:19:22,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:19:22,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:19:22,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:19:22,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:19:22,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:19:22,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:19:22,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:19:22,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:19:22,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:19:22,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:19:22,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:19:22,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:19:22,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:19:22,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:19:22,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:19:22,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:19:22,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:19:22,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:19:22,347 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:19:22,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:19:22,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:19:22,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:19:22,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:19:22,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:19:22,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:19:22,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:19:22,351 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:19:22,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:19:22,352 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:19:22,352 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:19:22,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:19:22,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:19:22,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:19:22,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:19:22,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:19:22,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:19:22,354 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:19:22,354 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:19:22,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:19:22,355 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:19:22,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:19:22,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:19:22,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:19:22,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:19:22,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:19:22,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:19:22,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:19:22,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:19:22,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:19:22,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:19:22,357 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:19:22,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:19:22,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:19:22,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d [2022-11-20 12:19:22,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:19:22,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:19:22,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:19:22,694 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:19:22,694 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:19:22,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i [2022-11-20 12:19:25,796 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:19:26,107 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:19:26,120 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i [2022-11-20 12:19:26,152 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/data/bd21eae72/9ccbdb84d2cd44ca93d29ec8ccf1c6ee/FLAG80fc599fa [2022-11-20 12:19:26,169 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/data/bd21eae72/9ccbdb84d2cd44ca93d29ec8ccf1c6ee [2022-11-20 12:19:26,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:19:26,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:19:26,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:19:26,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:19:26,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:19:26,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:19:26" (1/1) ... [2022-11-20 12:19:26,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3924fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:26, skipping insertion in model container [2022-11-20 12:19:26,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:19:26" (1/1) ... [2022-11-20 12:19:26,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:19:26,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:19:26,878 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i[47038,47051] [2022-11-20 12:19:26,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:19:26,975 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:19:27,031 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i[47038,47051] [2022-11-20 12:19:27,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:19:27,145 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:19:27,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27 WrapperNode [2022-11-20 12:19:27,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:19:27,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:19:27,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:19:27,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:19:27,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27" (1/1) ... [2022-11-20 12:19:27,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27" (1/1) ... [2022-11-20 12:19:27,258 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 359 [2022-11-20 12:19:27,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:19:27,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:19:27,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:19:27,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:19:27,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27" (1/1) ... [2022-11-20 12:19:27,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27" (1/1) ... [2022-11-20 12:19:27,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27" (1/1) ... [2022-11-20 12:19:27,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27" (1/1) ... [2022-11-20 12:19:27,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27" (1/1) ... [2022-11-20 12:19:27,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27" (1/1) ... [2022-11-20 12:19:27,304 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27" (1/1) ... [2022-11-20 12:19:27,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27" (1/1) ... [2022-11-20 12:19:27,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:19:27,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:19:27,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:19:27,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:19:27,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27" (1/1) ... [2022-11-20 12:19:27,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:19:27,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:27,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:19:27,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:19:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:19:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:19:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-20 12:19:27,414 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-20 12:19:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:19:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:19:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-20 12:19:27,415 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-20 12:19:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:19:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:19:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:19:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:19:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:19:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-11-20 12:19:27,417 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-11-20 12:19:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:19:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:19:27,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:19:27,419 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:19:27,725 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:19:27,727 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:19:28,423 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:19:28,436 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:19:28,436 INFO L300 CfgBuilder]: Removed 28 assume(true) statements. [2022-11-20 12:19:28,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:19:28 BoogieIcfgContainer [2022-11-20 12:19:28,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:19:28,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:19:28,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:19:28,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:19:28,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:19:26" (1/3) ... [2022-11-20 12:19:28,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46265d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:19:28, skipping insertion in model container [2022-11-20 12:19:28,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:27" (2/3) ... [2022-11-20 12:19:28,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46265d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:19:28, skipping insertion in model container [2022-11-20 12:19:28,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:19:28" (3/3) ... [2022-11-20 12:19:28,451 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2022-11-20 12:19:28,461 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:19:28,474 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:19:28,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-20 12:19:28,475 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:19:28,725 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-11-20 12:19:28,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 401 transitions, 844 flow [2022-11-20 12:19:29,377 INFO L130 PetriNetUnfolder]: 164/1253 cut-off events. [2022-11-20 12:19:29,379 INFO L131 PetriNetUnfolder]: For 36/59 co-relation queries the response was YES. [2022-11-20 12:19:29,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 1253 events. 164/1253 cut-off events. For 36/59 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8101 event pairs, 0 based on Foata normal form. 0/1005 useless extension candidates. Maximal degree in co-relation 641. Up to 16 conditions per place. [2022-11-20 12:19:29,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 401 transitions, 844 flow [2022-11-20 12:19:29,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 401 transitions, 844 flow [2022-11-20 12:19:29,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:19:29,453 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;@178cfe6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:19:29,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-20 12:19:29,468 INFO L130 PetriNetUnfolder]: 4/95 cut-off events. [2022-11-20 12:19:29,468 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:19:29,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:29,469 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:29,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-20 12:19:29,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:29,476 INFO L85 PathProgramCache]: Analyzing trace with hash -85561672, now seen corresponding path program 1 times [2022-11-20 12:19:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:29,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551111700] [2022-11-20 12:19:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:29,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:30,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:30,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551111700] [2022-11-20 12:19:30,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551111700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:30,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:30,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:19:30,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727994536] [2022-11-20 12:19:30,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:30,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:19:30,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:30,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:19:30,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:19:30,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 401 [2022-11-20 12:19:30,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 401 transitions, 844 flow. Second operand has 4 states, 4 states have (on average 346.75) internal successors, (1387), 4 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:30,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:30,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 401 [2022-11-20 12:19:30,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:30,597 INFO L130 PetriNetUnfolder]: 41/809 cut-off events. [2022-11-20 12:19:30,597 INFO L131 PetriNetUnfolder]: For 136/228 co-relation queries the response was YES. [2022-11-20 12:19:30,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 809 events. 41/809 cut-off events. For 136/228 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4659 event pairs, 0 based on Foata normal form. 274/975 useless extension candidates. Maximal degree in co-relation 579. Up to 45 conditions per place. [2022-11-20 12:19:30,618 INFO L137 encePairwiseOnDemand]: 364/401 looper letters, 20 selfloop transitions, 4 changer transitions 0/369 dead transitions. [2022-11-20 12:19:30,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 369 transitions, 828 flow [2022-11-20 12:19:30,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:19:30,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:19:30,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1783 transitions. [2022-11-20 12:19:30,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8892768079800498 [2022-11-20 12:19:30,645 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1783 transitions. [2022-11-20 12:19:30,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1783 transitions. [2022-11-20 12:19:30,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:30,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1783 transitions. [2022-11-20 12:19:30,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 356.6) internal successors, (1783), 5 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:30,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 401.0) internal successors, (2406), 6 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:30,679 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 401.0) internal successors, (2406), 6 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:30,681 INFO L175 Difference]: Start difference. First operand has 363 places, 401 transitions, 844 flow. Second operand 5 states and 1783 transitions. [2022-11-20 12:19:30,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 369 transitions, 828 flow [2022-11-20 12:19:30,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 369 transitions, 828 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:19:30,709 INFO L231 Difference]: Finished difference. Result has 364 places, 367 transitions, 788 flow [2022-11-20 12:19:30,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=788, PETRI_PLACES=364, PETRI_TRANSITIONS=367} [2022-11-20 12:19:30,719 INFO L288 CegarLoopForPetriNet]: 363 programPoint places, 1 predicate places. [2022-11-20 12:19:30,719 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 367 transitions, 788 flow [2022-11-20 12:19:30,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 346.75) internal successors, (1387), 4 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:30,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:30,721 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:30,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:19:30,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-20 12:19:30,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:30,728 INFO L85 PathProgramCache]: Analyzing trace with hash 719837102, now seen corresponding path program 1 times [2022-11-20 12:19:30,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:30,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418958998] [2022-11-20 12:19:30,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:30,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:19:30,825 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:19:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:19:30,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:19:30,924 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:19:30,927 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-20 12:19:30,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2022-11-20 12:19:30,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2022-11-20 12:19:30,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2022-11-20 12:19:30,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2022-11-20 12:19:30,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2022-11-20 12:19:30,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2022-11-20 12:19:30,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2022-11-20 12:19:30,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2022-11-20 12:19:30,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2022-11-20 12:19:30,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2022-11-20 12:19:30,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2022-11-20 12:19:30,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2022-11-20 12:19:30,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2022-11-20 12:19:30,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2022-11-20 12:19:30,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2022-11-20 12:19:30,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2022-11-20 12:19:30,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2022-11-20 12:19:30,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2022-11-20 12:19:30,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2022-11-20 12:19:30,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2022-11-20 12:19:30,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 31 remaining) [2022-11-20 12:19:30,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 31 remaining) [2022-11-20 12:19:30,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2022-11-20 12:19:30,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2022-11-20 12:19:30,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2022-11-20 12:19:30,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2022-11-20 12:19:30,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2022-11-20 12:19:30,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2022-11-20 12:19:30,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2022-11-20 12:19:30,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2022-11-20 12:19:30,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:19:30,961 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 12:19:30,964 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:19:30,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 12:19:31,086 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-20 12:19:31,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 566 places, 637 transitions, 1364 flow [2022-11-20 12:19:34,999 INFO L130 PetriNetUnfolder]: 1130/6634 cut-off events. [2022-11-20 12:19:34,999 INFO L131 PetriNetUnfolder]: For 602/691 co-relation queries the response was YES. [2022-11-20 12:19:35,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7308 conditions, 6634 events. 1130/6634 cut-off events. For 602/691 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 63947 event pairs, 22 based on Foata normal form. 0/5281 useless extension candidates. Maximal degree in co-relation 4064. Up to 192 conditions per place. [2022-11-20 12:19:35,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 566 places, 637 transitions, 1364 flow [2022-11-20 12:19:35,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 566 places, 637 transitions, 1364 flow [2022-11-20 12:19:35,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:19:35,533 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;@178cfe6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:19:35,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-20 12:19:35,545 INFO L130 PetriNetUnfolder]: 4/94 cut-off events. [2022-11-20 12:19:35,546 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:19:35,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:35,546 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:35,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:19:35,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:35,549 INFO L85 PathProgramCache]: Analyzing trace with hash -855987569, now seen corresponding path program 1 times [2022-11-20 12:19:35,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:35,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024388717] [2022-11-20 12:19:35,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:35,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:35,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:35,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024388717] [2022-11-20 12:19:35,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024388717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:35,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:35,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:19:35,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859194125] [2022-11-20 12:19:35,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:35,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:19:35,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:35,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:19:35,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:19:35,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 637 [2022-11-20 12:19:35,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 637 transitions, 1364 flow. Second operand has 4 states, 4 states have (on average 544.75) internal successors, (2179), 4 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:35,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:35,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 637 [2022-11-20 12:19:35,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:39,242 INFO L130 PetriNetUnfolder]: 578/5255 cut-off events. [2022-11-20 12:19:39,242 INFO L131 PetriNetUnfolder]: For 1977/2909 co-relation queries the response was YES. [2022-11-20 12:19:39,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6518 conditions, 5255 events. 578/5255 cut-off events. For 1977/2909 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 51242 event pairs, 18 based on Foata normal form. 4777/9215 useless extension candidates. Maximal degree in co-relation 3956. Up to 609 conditions per place. [2022-11-20 12:19:39,474 INFO L137 encePairwiseOnDemand]: 576/637 looper letters, 39 selfloop transitions, 4 changer transitions 0/586 dead transitions. [2022-11-20 12:19:39,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 586 transitions, 1348 flow [2022-11-20 12:19:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:19:39,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:19:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2816 transitions. [2022-11-20 12:19:39,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8841444270015698 [2022-11-20 12:19:39,483 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2816 transitions. [2022-11-20 12:19:39,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2816 transitions. [2022-11-20 12:19:39,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:39,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2816 transitions. [2022-11-20 12:19:39,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 563.2) internal successors, (2816), 5 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:39,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 637.0) internal successors, (3822), 6 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:39,505 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 637.0) internal successors, (3822), 6 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:39,505 INFO L175 Difference]: Start difference. First operand has 566 places, 637 transitions, 1364 flow. Second operand 5 states and 2816 transitions. [2022-11-20 12:19:39,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 586 transitions, 1348 flow [2022-11-20 12:19:39,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 586 transitions, 1348 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:19:39,523 INFO L231 Difference]: Finished difference. Result has 569 places, 582 transitions, 1280 flow [2022-11-20 12:19:39,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=569, PETRI_TRANSITIONS=582} [2022-11-20 12:19:39,526 INFO L288 CegarLoopForPetriNet]: 566 programPoint places, 3 predicate places. [2022-11-20 12:19:39,526 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 582 transitions, 1280 flow [2022-11-20 12:19:39,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 544.75) internal successors, (2179), 4 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:39,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:39,528 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:39,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:19:39,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:19:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:39,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2005479070, now seen corresponding path program 1 times [2022-11-20 12:19:39,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:39,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103093230] [2022-11-20 12:19:39,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:39,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:19:39,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:39,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103093230] [2022-11-20 12:19:39,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103093230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:39,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:39,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:19:39,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205143574] [2022-11-20 12:19:39,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:39,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:19:39,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:19:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:19:39,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 637 [2022-11-20 12:19:39,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 582 transitions, 1280 flow. Second operand has 4 states, 4 states have (on average 546.75) internal successors, (2187), 4 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:39,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:39,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 637 [2022-11-20 12:19:39,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:42,713 INFO L130 PetriNetUnfolder]: 578/5254 cut-off events. [2022-11-20 12:19:42,713 INFO L131 PetriNetUnfolder]: For 1982/2899 co-relation queries the response was YES. [2022-11-20 12:19:42,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6533 conditions, 5254 events. 578/5254 cut-off events. For 1982/2899 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 51353 event pairs, 18 based on Foata normal form. 19/4460 useless extension candidates. Maximal degree in co-relation 6426. Up to 598 conditions per place. [2022-11-20 12:19:42,971 INFO L137 encePairwiseOnDemand]: 631/637 looper letters, 31 selfloop transitions, 8 changer transitions 0/582 dead transitions. [2022-11-20 12:19:42,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 582 transitions, 1356 flow [2022-11-20 12:19:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:19:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:19:42,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2752 transitions. [2022-11-20 12:19:42,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8640502354788069 [2022-11-20 12:19:42,982 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2752 transitions. [2022-11-20 12:19:42,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2752 transitions. [2022-11-20 12:19:42,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:42,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2752 transitions. [2022-11-20 12:19:42,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 550.4) internal successors, (2752), 5 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:43,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 637.0) internal successors, (3822), 6 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:43,008 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 637.0) internal successors, (3822), 6 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:43,009 INFO L175 Difference]: Start difference. First operand has 569 places, 582 transitions, 1280 flow. Second operand 5 states and 2752 transitions. [2022-11-20 12:19:43,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 582 transitions, 1356 flow [2022-11-20 12:19:43,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 582 transitions, 1354 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:19:43,035 INFO L231 Difference]: Finished difference. Result has 572 places, 582 transitions, 1298 flow [2022-11-20 12:19:43,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1298, PETRI_PLACES=572, PETRI_TRANSITIONS=582} [2022-11-20 12:19:43,040 INFO L288 CegarLoopForPetriNet]: 566 programPoint places, 6 predicate places. [2022-11-20 12:19:43,040 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 582 transitions, 1298 flow [2022-11-20 12:19:43,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 546.75) internal successors, (2187), 4 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:43,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:43,043 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:43,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:19:43,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:19:43,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:43,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2040310372, now seen corresponding path program 1 times [2022-11-20 12:19:43,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:43,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91315301] [2022-11-20 12:19:43,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:43,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:43,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:43,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91315301] [2022-11-20 12:19:43,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91315301] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:19:43,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831450138] [2022-11-20 12:19:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:43,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:43,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:43,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:19:43,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:19:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:19:43,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:43,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:19:43,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831450138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:43,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:19:43,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:19:43,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637453065] [2022-11-20 12:19:43,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:43,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:43,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:43,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:43,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:43,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 637 [2022-11-20 12:19:43,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 582 transitions, 1298 flow. Second operand has 6 states, 6 states have (on average 545.6666666666666) internal successors, (3274), 6 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:43,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:43,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 637 [2022-11-20 12:19:43,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:46,723 INFO L130 PetriNetUnfolder]: 578/5253 cut-off events. [2022-11-20 12:19:46,723 INFO L131 PetriNetUnfolder]: For 1988/2890 co-relation queries the response was YES. [2022-11-20 12:19:46,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6542 conditions, 5253 events. 578/5253 cut-off events. For 1988/2890 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 51281 event pairs, 18 based on Foata normal form. 16/4456 useless extension candidates. Maximal degree in co-relation 3972. Up to 601 conditions per place. [2022-11-20 12:19:46,945 INFO L137 encePairwiseOnDemand]: 632/637 looper letters, 35 selfloop transitions, 6 changer transitions 0/584 dead transitions. [2022-11-20 12:19:46,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 584 transitions, 1382 flow [2022-11-20 12:19:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:19:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3843 transitions. [2022-11-20 12:19:46,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8618524332810047 [2022-11-20 12:19:46,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3843 transitions. [2022-11-20 12:19:46,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3843 transitions. [2022-11-20 12:19:46,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:46,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3843 transitions. [2022-11-20 12:19:46,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 549.0) internal successors, (3843), 7 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:46,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 637.0) internal successors, (5096), 8 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:46,995 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 637.0) internal successors, (5096), 8 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:46,996 INFO L175 Difference]: Start difference. First operand has 572 places, 582 transitions, 1298 flow. Second operand 7 states and 3843 transitions. [2022-11-20 12:19:46,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 584 transitions, 1382 flow [2022-11-20 12:19:47,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 584 transitions, 1370 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:19:47,015 INFO L231 Difference]: Finished difference. Result has 574 places, 581 transitions, 1294 flow [2022-11-20 12:19:47,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1294, PETRI_PLACES=574, PETRI_TRANSITIONS=581} [2022-11-20 12:19:47,019 INFO L288 CegarLoopForPetriNet]: 566 programPoint places, 8 predicate places. [2022-11-20 12:19:47,019 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 581 transitions, 1294 flow [2022-11-20 12:19:47,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.6666666666666) internal successors, (3274), 6 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:47,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:47,021 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:47,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:19:47,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:47,228 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:19:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:47,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1158979432, now seen corresponding path program 1 times [2022-11-20 12:19:47,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:47,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623612610] [2022-11-20 12:19:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:47,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:47,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:47,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623612610] [2022-11-20 12:19:47,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623612610] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:19:47,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113567511] [2022-11-20 12:19:47,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:47,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:47,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:47,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:19:47,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:19:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:47,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:19:47,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:47,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:19:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:47,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113567511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:19:47,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:19:47,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 12:19:47,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063378316] [2022-11-20 12:19:47,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:19:47,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:19:47,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:47,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:19:47,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:19:47,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 637 [2022-11-20 12:19:47,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 581 transitions, 1294 flow. Second operand has 10 states, 10 states have (on average 546.0) internal successors, (5460), 10 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:47,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:19:47,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 637 [2022-11-20 12:19:47,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:19:47,969 INFO L130 PetriNetUnfolder]: 0/153 cut-off events. [2022-11-20 12:19:47,969 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-20 12:19:47,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 153 events. 0/153 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 107 event pairs, 0 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-11-20 12:19:47,970 INFO L137 encePairwiseOnDemand]: 632/637 looper letters, 13 selfloop transitions, 7 changer transitions 0/147 dead transitions. [2022-11-20 12:19:47,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 147 transitions, 388 flow [2022-11-20 12:19:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:19:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:19:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4909 transitions. [2022-11-20 12:19:47,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8562707134135705 [2022-11-20 12:19:47,986 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4909 transitions. [2022-11-20 12:19:47,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4909 transitions. [2022-11-20 12:19:47,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:19:47,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4909 transitions. [2022-11-20 12:19:48,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 545.4444444444445) internal successors, (4909), 9 states have internal predecessors, (4909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:48,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 637.0) internal successors, (6370), 10 states have internal predecessors, (6370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:48,022 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 637.0) internal successors, (6370), 10 states have internal predecessors, (6370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:48,022 INFO L175 Difference]: Start difference. First operand has 574 places, 581 transitions, 1294 flow. Second operand 9 states and 4909 transitions. [2022-11-20 12:19:48,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 147 transitions, 388 flow [2022-11-20 12:19:48,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 147 transitions, 371 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-20 12:19:48,028 INFO L231 Difference]: Finished difference. Result has 163 places, 142 transitions, 333 flow [2022-11-20 12:19:48,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=333, PETRI_PLACES=163, PETRI_TRANSITIONS=142} [2022-11-20 12:19:48,030 INFO L288 CegarLoopForPetriNet]: 566 programPoint places, -403 predicate places. [2022-11-20 12:19:48,030 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 142 transitions, 333 flow [2022-11-20 12:19:48,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 546.0) internal successors, (5460), 10 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:19:48,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:19:48,033 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:48,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:19:48,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f402978c-5eb0-4991-a941-80f84d5ec865/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:48,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:19:48,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:48,240 INFO L85 PathProgramCache]: Analyzing trace with hash -234930700, now seen corresponding path program 1 times [2022-11-20 12:19:48,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:48,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153019796] [2022-11-20 12:19:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:48,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:19:48,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:19:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:19:48,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:19:48,354 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:19:48,354 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2022-11-20 12:19:48,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-20 12:19:48,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-20 12:19:48,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-20 12:19:48,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-20 12:19:48,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-20 12:19:48,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-20 12:19:48,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-20 12:19:48,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-20 12:19:48,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-20 12:19:48,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-20 12:19:48,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-20 12:19:48,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-20 12:19:48,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-20 12:19:48,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-20 12:19:48,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-20 12:19:48,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-20 12:19:48,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-20 12:19:48,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 39 remaining) [2022-11-20 12:19:48,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 39 remaining) [2022-11-20 12:19:48,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 39 remaining) [2022-11-20 12:19:48,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 39 remaining) [2022-11-20 12:19:48,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 39 remaining) [2022-11-20 12:19:48,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-20 12:19:48,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-20 12:19:48,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-20 12:19:48,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-20 12:19:48,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-20 12:19:48,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-20 12:19:48,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-20 12:19:48,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-20 12:19:48,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-20 12:19:48,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-20 12:19:48,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-20 12:19:48,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-20 12:19:48,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-20 12:19:48,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-20 12:19:48,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-20 12:19:48,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-20 12:19:48,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:19:48,365 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 12:19:48,366 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:19:48,366 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 12:19:48,552 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2022-11-20 12:19:48,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 769 places, 873 transitions, 1890 flow [2022-11-20 12:20:17,563 INFO L130 PetriNetUnfolder]: 8984/38697 cut-off events. [2022-11-20 12:20:17,563 INFO L131 PetriNetUnfolder]: For 7059/7268 co-relation queries the response was YES. [2022-11-20 12:20:20,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45871 conditions, 38697 events. 8984/38697 cut-off events. For 7059/7268 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 461554 event pairs, 1024 based on Foata normal form. 0/31117 useless extension candidates. Maximal degree in co-relation 24023. Up to 2304 conditions per place. [2022-11-20 12:20:20,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 769 places, 873 transitions, 1890 flow [2022-11-20 12:20:21,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 769 places, 873 transitions, 1890 flow [2022-11-20 12:20:21,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:20:21,727 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;@178cfe6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:20:21,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2022-11-20 12:20:21,736 INFO L130 PetriNetUnfolder]: 4/95 cut-off events. [2022-11-20 12:20:21,736 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:20:21,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:21,736 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:21,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-20 12:20:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:21,737 INFO L85 PathProgramCache]: Analyzing trace with hash 145342802, now seen corresponding path program 1 times [2022-11-20 12:20:21,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:21,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225175554] [2022-11-20 12:20:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:21,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:21,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:21,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225175554] [2022-11-20 12:20:21,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225175554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:21,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:21,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:20:21,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084330482] [2022-11-20 12:20:21,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:21,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:21,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:21,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:21,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 741 out of 873 [2022-11-20 12:20:21,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 873 transitions, 1890 flow. Second operand has 4 states, 4 states have (on average 742.75) internal successors, (2971), 4 states have internal predecessors, (2971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:21,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:21,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 741 of 873 [2022-11-20 12:20:21,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand