./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:42:04,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:42:04,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:42:04,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:42:04,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:42:04,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:42:04,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:42:04,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:42:04,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:42:04,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:42:04,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:42:04,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:42:04,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:42:04,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:42:04,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:42:04,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:42:04,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:42:04,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:42:04,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:42:04,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:42:04,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:42:04,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:42:04,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:42:04,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:42:04,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:42:04,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:42:04,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:42:04,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:42:04,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:42:04,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:42:04,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:42:04,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:42:04,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:42:04,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:42:04,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:42:04,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:42:04,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:42:04,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:42:04,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:42:04,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:42:04,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:42:04,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 17:42:04,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:42:04,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:42:04,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:42:04,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:42:04,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:42:04,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:42:04,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:42:04,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:42:04,296 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:42:04,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:42:04,297 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:42:04,297 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:42:04,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:42:04,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:42:04,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:42:04,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:42:04,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:42:04,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:42:04,298 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 17:42:04,298 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:42:04,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:42:04,298 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:42:04,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:42:04,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:42:04,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:42:04,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:42:04,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:42:04,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:42:04,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:42:04,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:42:04,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:42:04,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:42:04,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:42:04,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:42:04,300 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:42:04,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:42:04,301 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:42:04,301 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f [2022-12-13 17:42:04,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:42:04,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:42:04,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:42:04,485 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:42:04,485 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:42:04,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2022-12-13 17:42:07,075 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:42:07,254 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:42:07,255 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2022-12-13 17:42:07,263 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/data/5c0b1e8e5/c13dbdbc17da460bb9048f0411f67db8/FLAG9578959cc [2022-12-13 17:42:07,274 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/data/5c0b1e8e5/c13dbdbc17da460bb9048f0411f67db8 [2022-12-13 17:42:07,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:42:07,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:42:07,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:42:07,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:42:07,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:42:07,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1a79f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07, skipping insertion in model container [2022-12-13 17:42:07,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:42:07,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:42:07,490 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_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i[30212,30225] [2022-12-13 17:42:07,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:42:07,514 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:42:07,538 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_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i[30212,30225] [2022-12-13 17:42:07,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:42:07,567 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:42:07,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07 WrapperNode [2022-12-13 17:42:07,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:42:07,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:42:07,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:42:07,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:42:07,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,599 INFO L138 Inliner]: procedures = 173, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 144 [2022-12-13 17:42:07,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:42:07,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:42:07,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:42:07,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:42:07,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,617 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:42:07,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:42:07,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:42:07,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:42:07,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07" (1/1) ... [2022-12-13 17:42:07,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:42:07,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:42:07,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:42:07,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:42:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:42:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:42:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 17:42:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:42:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:42:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 17:42:07,673 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 17:42:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:42:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:42:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:42:07,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:42:07,674 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 17:42:07,777 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:42:07,779 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:42:08,001 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:42:08,010 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:42:08,010 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-13 17:42:08,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:42:08 BoogieIcfgContainer [2022-12-13 17:42:08,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:42:08,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:42:08,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:42:08,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:42:08,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:42:07" (1/3) ... [2022-12-13 17:42:08,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25515a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:42:08, skipping insertion in model container [2022-12-13 17:42:08,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:07" (2/3) ... [2022-12-13 17:42:08,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25515a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:42:08, skipping insertion in model container [2022-12-13 17:42:08,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:42:08" (3/3) ... [2022-12-13 17:42:08,028 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2022-12-13 17:42:08,037 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 17:42:08,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:42:08,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 17:42:08,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:42:08,095 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 17:42:08,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 167 transitions, 342 flow [2022-12-13 17:42:08,180 INFO L130 PetriNetUnfolder]: 26/255 cut-off events. [2022-12-13 17:42:08,180 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:42:08,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 255 events. 26/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 752 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 126. Up to 6 conditions per place. [2022-12-13 17:42:08,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 167 transitions, 342 flow [2022-12-13 17:42:08,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 164 transitions, 336 flow [2022-12-13 17:42:08,192 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:42:08,200 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 164 transitions, 336 flow [2022-12-13 17:42:08,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 164 transitions, 336 flow [2022-12-13 17:42:08,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 164 transitions, 336 flow [2022-12-13 17:42:08,233 INFO L130 PetriNetUnfolder]: 25/252 cut-off events. [2022-12-13 17:42:08,233 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:42:08,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 252 events. 25/252 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 126. Up to 6 conditions per place. [2022-12-13 17:42:08,235 INFO L119 LiptonReduction]: Number of co-enabled transitions 4116 [2022-12-13 17:42:11,193 INFO L134 LiptonReduction]: Checked pairs total: 5814 [2022-12-13 17:42:11,194 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-12-13 17:42:11,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:42:11,209 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;@3309e864, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:42:11,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 17:42:11,211 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-12-13 17:42:11,211 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:42:11,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:11,212 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:42:11,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:11,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash 18603179, now seen corresponding path program 1 times [2022-12-13 17:42:11,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:11,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285263646] [2022-12-13 17:42:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:11,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:11,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:42:11,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285263646] [2022-12-13 17:42:11,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285263646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:42:11,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:42:11,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:42:11,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961913061] [2022-12-13 17:42:11,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:42:11,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:42:11,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:42:11,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:42:11,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:42:11,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 319 [2022-12-13 17:42:11,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 44 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:11,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:42:11,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 319 [2022-12-13 17:42:11,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:42:11,520 INFO L130 PetriNetUnfolder]: 97/228 cut-off events. [2022-12-13 17:42:11,520 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:42:11,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 228 events. 97/228 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 911 event pairs, 0 based on Foata normal form. 6/185 useless extension candidates. Maximal degree in co-relation 420. Up to 203 conditions per place. [2022-12-13 17:42:11,523 INFO L137 encePairwiseOnDemand]: 304/319 looper letters, 33 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2022-12-13 17:42:11,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 154 flow [2022-12-13 17:42:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:42:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:42:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2022-12-13 17:42:11,535 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2022-12-13 17:42:11,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2022-12-13 17:42:11,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2022-12-13 17:42:11,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:42:11,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2022-12-13 17:42:11,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:11,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:11,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:11,547 INFO L175 Difference]: Start difference. First operand has 36 places, 44 transitions, 96 flow. Second operand 3 states and 495 transitions. [2022-12-13 17:42:11,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 154 flow [2022-12-13 17:42:11,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:42:11,551 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 80 flow [2022-12-13 17:42:11,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2022-12-13 17:42:11,555 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2022-12-13 17:42:11,555 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 80 flow [2022-12-13 17:42:11,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:11,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:11,556 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 17:42:11,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:42:11,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash 697841994, now seen corresponding path program 1 times [2022-12-13 17:42:11,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:11,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971451375] [2022-12-13 17:42:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:11,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:42:11,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:42:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:42:11,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:42:11,599 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:42:11,600 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-13 17:42:11,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-12-13 17:42:11,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-12-13 17:42:11,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-12-13 17:42:11,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-12-13 17:42:11,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-12-13 17:42:11,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-12-13 17:42:11,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-12-13 17:42:11,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-12-13 17:42:11,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-12-13 17:42:11,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-12-13 17:42:11,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:42:11,603 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 17:42:11,605 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:42:11,605 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 17:42:11,619 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 17:42:11,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 190 transitions, 398 flow [2022-12-13 17:42:11,655 INFO L130 PetriNetUnfolder]: 43/403 cut-off events. [2022-12-13 17:42:11,655 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 17:42:11,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 403 events. 43/403 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1527 event pairs, 0 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 257. Up to 9 conditions per place. [2022-12-13 17:42:11,657 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 190 transitions, 398 flow [2022-12-13 17:42:11,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 190 transitions, 398 flow [2022-12-13 17:42:11,658 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:42:11,658 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 190 transitions, 398 flow [2022-12-13 17:42:11,659 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 190 transitions, 398 flow [2022-12-13 17:42:11,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 190 transitions, 398 flow [2022-12-13 17:42:11,687 INFO L130 PetriNetUnfolder]: 43/403 cut-off events. [2022-12-13 17:42:11,687 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 17:42:11,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 403 events. 43/403 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1527 event pairs, 0 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 257. Up to 9 conditions per place. [2022-12-13 17:42:11,692 INFO L119 LiptonReduction]: Number of co-enabled transitions 9912 [2022-12-13 17:42:14,378 INFO L134 LiptonReduction]: Checked pairs total: 15044 [2022-12-13 17:42:14,378 INFO L136 LiptonReduction]: Total number of compositions: 169 [2022-12-13 17:42:14,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:42:14,382 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;@3309e864, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:42:14,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 17:42:14,384 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2022-12-13 17:42:14,384 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:42:14,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:14,384 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:42:14,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:14,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:14,384 INFO L85 PathProgramCache]: Analyzing trace with hash 30377510, now seen corresponding path program 1 times [2022-12-13 17:42:14,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:14,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910507869] [2022-12-13 17:42:14,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:14,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:14,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:42:14,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910507869] [2022-12-13 17:42:14,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910507869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:42:14,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:42:14,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:42:14,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266091676] [2022-12-13 17:42:14,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:42:14,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:42:14,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:42:14,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:42:14,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:42:14,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 359 [2022-12-13 17:42:14,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:14,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:42:14,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 359 [2022-12-13 17:42:14,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:42:14,667 INFO L130 PetriNetUnfolder]: 1521/2545 cut-off events. [2022-12-13 17:42:14,668 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-12-13 17:42:14,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5090 conditions, 2545 events. 1521/2545 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13472 event pairs, 660 based on Foata normal form. 42/2103 useless extension candidates. Maximal degree in co-relation 779. Up to 2488 conditions per place. [2022-12-13 17:42:14,675 INFO L137 encePairwiseOnDemand]: 344/359 looper letters, 45 selfloop transitions, 2 changer transitions 1/53 dead transitions. [2022-12-13 17:42:14,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 220 flow [2022-12-13 17:42:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:42:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:42:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2022-12-13 17:42:14,678 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5181058495821727 [2022-12-13 17:42:14,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2022-12-13 17:42:14,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2022-12-13 17:42:14,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:42:14,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2022-12-13 17:42:14,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:14,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:14,682 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:14,682 INFO L175 Difference]: Start difference. First operand has 47 places, 56 transitions, 130 flow. Second operand 3 states and 558 transitions. [2022-12-13 17:42:14,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 220 flow [2022-12-13 17:42:14,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:42:14,683 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 124 flow [2022-12-13 17:42:14,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2022-12-13 17:42:14,684 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2022-12-13 17:42:14,684 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 124 flow [2022-12-13 17:42:14,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:14,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:14,684 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:42:14,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:42:14,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:14,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:14,685 INFO L85 PathProgramCache]: Analyzing trace with hash -560639728, now seen corresponding path program 1 times [2022-12-13 17:42:14,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:14,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895095828] [2022-12-13 17:42:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:14,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:14,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:42:14,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895095828] [2022-12-13 17:42:14,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895095828] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:42:14,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483056925] [2022-12-13 17:42:14,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:14,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:42:14,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:42:14,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:42:14,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:42:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:14,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:42:14,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:42:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:14,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:42:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:14,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483056925] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:42:14,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:42:14,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 17:42:14,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766822663] [2022-12-13 17:42:14,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:42:14,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:42:14,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:42:14,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:42:14,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:42:14,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 359 [2022-12-13 17:42:14,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:14,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:42:14,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 359 [2022-12-13 17:42:14,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:42:14,956 INFO L130 PetriNetUnfolder]: 220/427 cut-off events. [2022-12-13 17:42:14,957 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-12-13 17:42:14,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 427 events. 220/427 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1813 event pairs, 0 based on Foata normal form. 42/432 useless extension candidates. Maximal degree in co-relation 166. Up to 192 conditions per place. [2022-12-13 17:42:14,958 INFO L137 encePairwiseOnDemand]: 354/359 looper letters, 40 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2022-12-13 17:42:14,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 46 transitions, 202 flow [2022-12-13 17:42:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:42:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:42:14,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1031 transitions. [2022-12-13 17:42:14,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.478644382544104 [2022-12-13 17:42:14,960 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1031 transitions. [2022-12-13 17:42:14,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1031 transitions. [2022-12-13 17:42:14,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:42:14,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1031 transitions. [2022-12-13 17:42:14,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.83333333333334) internal successors, (1031), 6 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:14,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 359.0) internal successors, (2513), 7 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:14,966 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 359.0) internal successors, (2513), 7 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:14,966 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 124 flow. Second operand 6 states and 1031 transitions. [2022-12-13 17:42:14,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 46 transitions, 202 flow [2022-12-13 17:42:14,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 17:42:14,968 INFO L231 Difference]: Finished difference. Result has 30 places, 19 transitions, 64 flow [2022-12-13 17:42:14,968 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2022-12-13 17:42:14,968 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -17 predicate places. [2022-12-13 17:42:14,969 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 64 flow [2022-12-13 17:42:14,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:14,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:14,969 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 17:42:14,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:42:15,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:42:15,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:15,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash -200685781, now seen corresponding path program 1 times [2022-12-13 17:42:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:15,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193802018] [2022-12-13 17:42:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:15,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:15,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:42:15,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193802018] [2022-12-13 17:42:15,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193802018] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:42:15,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:42:15,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:42:15,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802946178] [2022-12-13 17:42:15,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:42:15,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:42:15,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:42:15,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:42:15,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:42:15,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 359 [2022-12-13 17:42:15,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:15,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:42:15,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 359 [2022-12-13 17:42:15,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:42:15,367 INFO L130 PetriNetUnfolder]: 160/297 cut-off events. [2022-12-13 17:42:15,368 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2022-12-13 17:42:15,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 297 events. 160/297 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1102 event pairs, 160 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 273. Up to 288 conditions per place. [2022-12-13 17:42:15,369 INFO L137 encePairwiseOnDemand]: 357/359 looper letters, 15 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2022-12-13 17:42:15,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 90 flow [2022-12-13 17:42:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:42:15,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:42:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2022-12-13 17:42:15,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4744661095636026 [2022-12-13 17:42:15,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2022-12-13 17:42:15,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2022-12-13 17:42:15,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:42:15,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2022-12-13 17:42:15,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:15,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:15,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:15,373 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 64 flow. Second operand 3 states and 511 transitions. [2022-12-13 17:42:15,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 90 flow [2022-12-13 17:42:15,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 18 transitions, 83 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 17:42:15,374 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 53 flow [2022-12-13 17:42:15,374 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2022-12-13 17:42:15,374 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -20 predicate places. [2022-12-13 17:42:15,374 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 53 flow [2022-12-13 17:42:15,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:15,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:15,375 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 17:42:15,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:42:15,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:15,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:15,375 INFO L85 PathProgramCache]: Analyzing trace with hash 414551285, now seen corresponding path program 1 times [2022-12-13 17:42:15,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:15,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415750391] [2022-12-13 17:42:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:15,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:42:15,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:42:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:42:15,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:42:15,397 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:42:15,397 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-13 17:42:15,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-12-13 17:42:15,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-12-13 17:42:15,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-12-13 17:42:15,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-12-13 17:42:15,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-12-13 17:42:15,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-12-13 17:42:15,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-12-13 17:42:15,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-12-13 17:42:15,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-12-13 17:42:15,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-12-13 17:42:15,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:42:15,398 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 17:42:15,399 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:42:15,399 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 17:42:15,414 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 17:42:15,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 213 transitions, 456 flow [2022-12-13 17:42:15,463 INFO L130 PetriNetUnfolder]: 65/592 cut-off events. [2022-12-13 17:42:15,463 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 17:42:15,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 592 events. 65/592 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2489 event pairs, 1 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 411. Up to 16 conditions per place. [2022-12-13 17:42:15,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 213 transitions, 456 flow [2022-12-13 17:42:15,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 213 transitions, 456 flow [2022-12-13 17:42:15,467 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:42:15,467 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 213 transitions, 456 flow [2022-12-13 17:42:15,467 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 213 transitions, 456 flow [2022-12-13 17:42:15,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 213 transitions, 456 flow [2022-12-13 17:42:15,510 INFO L130 PetriNetUnfolder]: 65/592 cut-off events. [2022-12-13 17:42:15,510 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 17:42:15,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 592 events. 65/592 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2489 event pairs, 1 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 411. Up to 16 conditions per place. [2022-12-13 17:42:15,520 INFO L119 LiptonReduction]: Number of co-enabled transitions 16380 [2022-12-13 17:42:18,558 INFO L134 LiptonReduction]: Checked pairs total: 24904 [2022-12-13 17:42:18,558 INFO L136 LiptonReduction]: Total number of compositions: 189 [2022-12-13 17:42:18,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:42:18,561 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;@3309e864, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:42:18,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 17:42:18,563 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2022-12-13 17:42:18,563 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:42:18,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:18,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:42:18,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:18,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash 43459861, now seen corresponding path program 1 times [2022-12-13 17:42:18,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:18,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588625606] [2022-12-13 17:42:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:18,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:18,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:42:18,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588625606] [2022-12-13 17:42:18,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588625606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:42:18,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:42:18,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:42:18,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30350203] [2022-12-13 17:42:18,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:42:18,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:42:18,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:42:18,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:42:18,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:42:18,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 402 [2022-12-13 17:42:18,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 68 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:18,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:42:18,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 402 [2022-12-13 17:42:18,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:42:19,630 INFO L130 PetriNetUnfolder]: 10209/15641 cut-off events. [2022-12-13 17:42:19,630 INFO L131 PetriNetUnfolder]: For 444/444 co-relation queries the response was YES. [2022-12-13 17:42:19,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30741 conditions, 15641 events. 10209/15641 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 100917 event pairs, 6343 based on Foata normal form. 1780/15083 useless extension candidates. Maximal degree in co-relation 4496. Up to 14772 conditions per place. [2022-12-13 17:42:19,691 INFO L137 encePairwiseOnDemand]: 382/402 looper letters, 49 selfloop transitions, 2 changer transitions 1/59 dead transitions. [2022-12-13 17:42:19,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 252 flow [2022-12-13 17:42:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:42:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:42:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2022-12-13 17:42:19,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5132669983416253 [2022-12-13 17:42:19,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2022-12-13 17:42:19,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2022-12-13 17:42:19,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:42:19,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2022-12-13 17:42:19,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:19,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:19,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:19,701 INFO L175 Difference]: Start difference. First operand has 55 places, 68 transitions, 166 flow. Second operand 3 states and 619 transitions. [2022-12-13 17:42:19,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 252 flow [2022-12-13 17:42:19,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:42:19,702 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 150 flow [2022-12-13 17:42:19,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2022-12-13 17:42:19,703 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2022-12-13 17:42:19,703 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 150 flow [2022-12-13 17:42:19,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:19,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:19,703 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:42:19,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:42:19,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:19,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash 679947822, now seen corresponding path program 1 times [2022-12-13 17:42:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:19,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21691165] [2022-12-13 17:42:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:19,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:19,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:42:19,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21691165] [2022-12-13 17:42:19,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21691165] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:42:19,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041602376] [2022-12-13 17:42:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:19,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:42:19,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:42:19,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:42:19,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:42:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:19,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:42:19,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:42:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:19,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:42:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:19,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041602376] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:42:19,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:42:19,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 17:42:19,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56932278] [2022-12-13 17:42:19,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:42:19,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:42:19,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:42:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:42:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:42:19,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 402 [2022-12-13 17:42:19,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 183.14285714285714) internal successors, (1282), 7 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:19,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:42:19,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 402 [2022-12-13 17:42:19,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:42:20,075 INFO L130 PetriNetUnfolder]: 1519/2473 cut-off events. [2022-12-13 17:42:20,075 INFO L131 PetriNetUnfolder]: For 730/730 co-relation queries the response was YES. [2022-12-13 17:42:20,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5694 conditions, 2473 events. 1519/2473 cut-off events. For 730/730 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13241 event pairs, 0 based on Foata normal form. 185/2477 useless extension candidates. Maximal degree in co-relation 1189. Up to 1030 conditions per place. [2022-12-13 17:42:20,083 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 59 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2022-12-13 17:42:20,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 69 transitions, 303 flow [2022-12-13 17:42:20,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:42:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:42:20,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1337 transitions. [2022-12-13 17:42:20,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47512437810945274 [2022-12-13 17:42:20,086 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1337 transitions. [2022-12-13 17:42:20,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1337 transitions. [2022-12-13 17:42:20,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:42:20,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1337 transitions. [2022-12-13 17:42:20,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:20,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:20,091 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:20,091 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 150 flow. Second operand 7 states and 1337 transitions. [2022-12-13 17:42:20,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 69 transitions, 303 flow [2022-12-13 17:42:20,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 69 transitions, 295 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 17:42:20,093 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 93 flow [2022-12-13 17:42:20,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=93, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2022-12-13 17:42:20,093 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -16 predicate places. [2022-12-13 17:42:20,093 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 93 flow [2022-12-13 17:42:20,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 183.14285714285714) internal successors, (1282), 7 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:20,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:20,094 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 17:42:20,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:42:20,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:42:20,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:20,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:20,296 INFO L85 PathProgramCache]: Analyzing trace with hash -396994389, now seen corresponding path program 1 times [2022-12-13 17:42:20,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:20,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050746668] [2022-12-13 17:42:20,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:20,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:20,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:42:20,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050746668] [2022-12-13 17:42:20,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050746668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:42:20,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:42:20,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:42:20,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232380467] [2022-12-13 17:42:20,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:42:20,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:42:20,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:42:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:42:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:42:20,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 402 [2022-12-13 17:42:20,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:20,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:42:20,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 402 [2022-12-13 17:42:20,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:42:20,552 INFO L130 PetriNetUnfolder]: 1105/1801 cut-off events. [2022-12-13 17:42:20,552 INFO L131 PetriNetUnfolder]: For 648/648 co-relation queries the response was YES. [2022-12-13 17:42:20,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3969 conditions, 1801 events. 1105/1801 cut-off events. For 648/648 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9178 event pairs, 1105 based on Foata normal form. 0/1799 useless extension candidates. Maximal degree in co-relation 818. Up to 1662 conditions per place. [2022-12-13 17:42:20,557 INFO L137 encePairwiseOnDemand]: 400/402 looper letters, 20 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2022-12-13 17:42:20,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 25 transitions, 123 flow [2022-12-13 17:42:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:42:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:42:20,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2022-12-13 17:42:20,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4693200663349917 [2022-12-13 17:42:20,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2022-12-13 17:42:20,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2022-12-13 17:42:20,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:42:20,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2022-12-13 17:42:20,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:20,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:20,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:20,561 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 93 flow. Second operand 3 states and 566 transitions. [2022-12-13 17:42:20,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 25 transitions, 123 flow [2022-12-13 17:42:20,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 114 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 17:42:20,561 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 74 flow [2022-12-13 17:42:20,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2022-12-13 17:42:20,562 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -19 predicate places. [2022-12-13 17:42:20,562 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 74 flow [2022-12-13 17:42:20,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:20,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:20,562 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 17:42:20,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:42:20,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:20,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:20,563 INFO L85 PathProgramCache]: Analyzing trace with hash 471325901, now seen corresponding path program 1 times [2022-12-13 17:42:20,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:20,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267888130] [2022-12-13 17:42:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:20,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:42:20,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:42:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:42:20,583 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:42:20,583 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:42:20,584 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-13 17:42:20,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-12-13 17:42:20,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-12-13 17:42:20,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-12-13 17:42:20,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-12-13 17:42:20,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-12-13 17:42:20,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-12-13 17:42:20,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-12-13 17:42:20,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-12-13 17:42:20,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-12-13 17:42:20,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-12-13 17:42:20,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:42:20,585 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 17:42:20,585 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:42:20,585 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 17:42:20,601 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 17:42:20,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 236 transitions, 516 flow [2022-12-13 17:42:20,674 INFO L130 PetriNetUnfolder]: 99/865 cut-off events. [2022-12-13 17:42:20,675 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 17:42:20,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 865 events. 99/865 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4018 event pairs, 6 based on Foata normal form. 0/698 useless extension candidates. Maximal degree in co-relation 612. Up to 32 conditions per place. [2022-12-13 17:42:20,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 236 transitions, 516 flow [2022-12-13 17:42:20,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 236 transitions, 516 flow [2022-12-13 17:42:20,681 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:42:20,681 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 236 transitions, 516 flow [2022-12-13 17:42:20,681 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 236 transitions, 516 flow [2022-12-13 17:42:20,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 236 transitions, 516 flow [2022-12-13 17:42:20,788 INFO L130 PetriNetUnfolder]: 99/865 cut-off events. [2022-12-13 17:42:20,788 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 17:42:20,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 865 events. 99/865 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4018 event pairs, 6 based on Foata normal form. 0/698 useless extension candidates. Maximal degree in co-relation 612. Up to 32 conditions per place. [2022-12-13 17:42:20,815 INFO L119 LiptonReduction]: Number of co-enabled transitions 23856 [2022-12-13 17:42:23,601 INFO L134 LiptonReduction]: Checked pairs total: 38342 [2022-12-13 17:42:23,602 INFO L136 LiptonReduction]: Total number of compositions: 211 [2022-12-13 17:42:23,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:42:23,603 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;@3309e864, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:42:23,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 17:42:23,604 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-12-13 17:42:23,604 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:42:23,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:23,604 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:42:23,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:23,604 INFO L85 PathProgramCache]: Analyzing trace with hash 57902566, now seen corresponding path program 1 times [2022-12-13 17:42:23,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:23,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875452274] [2022-12-13 17:42:23,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:23,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:23,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:42:23,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875452274] [2022-12-13 17:42:23,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875452274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:42:23,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:42:23,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:42:23,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682150394] [2022-12-13 17:42:23,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:42:23,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:42:23,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:42:23,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:42:23,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:42:23,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 447 [2022-12-13 17:42:23,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 75 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:23,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:42:23,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 447 [2022-12-13 17:42:23,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:42:30,530 INFO L130 PetriNetUnfolder]: 87481/121975 cut-off events. [2022-12-13 17:42:30,530 INFO L131 PetriNetUnfolder]: For 4660/4660 co-relation queries the response was YES. [2022-12-13 17:42:30,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241132 conditions, 121975 events. 87481/121975 cut-off events. For 4660/4660 co-relation queries the response was YES. Maximal size of possible extension queue 3335. Compared 843686 event pairs, 63077 based on Foata normal form. 11218/118513 useless extension candidates. Maximal degree in co-relation 37100. Up to 116536 conditions per place. [2022-12-13 17:42:31,030 INFO L137 encePairwiseOnDemand]: 427/447 looper letters, 56 selfloop transitions, 2 changer transitions 1/66 dead transitions. [2022-12-13 17:42:31,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 294 flow [2022-12-13 17:42:31,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:42:31,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:42:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2022-12-13 17:42:31,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5041014168530947 [2022-12-13 17:42:31,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2022-12-13 17:42:31,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2022-12-13 17:42:31,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:42:31,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2022-12-13 17:42:31,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:31,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:31,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:31,035 INFO L175 Difference]: Start difference. First operand has 63 places, 75 transitions, 194 flow. Second operand 3 states and 676 transitions. [2022-12-13 17:42:31,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 294 flow [2022-12-13 17:42:31,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:42:31,038 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 178 flow [2022-12-13 17:42:31,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2022-12-13 17:42:31,039 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2022-12-13 17:42:31,039 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 178 flow [2022-12-13 17:42:31,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:31,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:31,040 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:42:31,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 17:42:31,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:31,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:31,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1614529643, now seen corresponding path program 1 times [2022-12-13 17:42:31,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:31,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231999310] [2022-12-13 17:42:31,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:31,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:31,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:42:31,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231999310] [2022-12-13 17:42:31,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231999310] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:42:31,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626741226] [2022-12-13 17:42:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:31,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:42:31,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:42:31,072 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:42:31,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:42:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:31,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:42:31,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:42:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:31,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:42:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:31,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626741226] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:42:31,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:42:31,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 17:42:31,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252466512] [2022-12-13 17:42:31,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:42:31,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:42:31,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:42:31,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:42:31,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:42:31,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 447 [2022-12-13 17:42:31,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:31,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:42:31,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 447 [2022-12-13 17:42:31,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:42:37,157 INFO L130 PetriNetUnfolder]: 71573/98171 cut-off events. [2022-12-13 17:42:37,157 INFO L131 PetriNetUnfolder]: For 4462/4462 co-relation queries the response was YES. [2022-12-13 17:42:37,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198909 conditions, 98171 events. 71573/98171 cut-off events. For 4462/4462 co-relation queries the response was YES. Maximal size of possible extension queue 2674. Compared 627092 event pairs, 948 based on Foata normal form. 215/89247 useless extension candidates. Maximal degree in co-relation 40898. Up to 81289 conditions per place. [2022-12-13 17:42:37,500 INFO L137 encePairwiseOnDemand]: 441/447 looper letters, 114 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2022-12-13 17:42:37,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 130 transitions, 570 flow [2022-12-13 17:42:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:42:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:42:37,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1515 transitions. [2022-12-13 17:42:37,503 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4841802492809204 [2022-12-13 17:42:37,504 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1515 transitions. [2022-12-13 17:42:37,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1515 transitions. [2022-12-13 17:42:37,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:42:37,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1515 transitions. [2022-12-13 17:42:37,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 216.42857142857142) internal successors, (1515), 7 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:37,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 447.0) internal successors, (3576), 8 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:37,510 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 447.0) internal successors, (3576), 8 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:37,510 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 178 flow. Second operand 7 states and 1515 transitions. [2022-12-13 17:42:37,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 130 transitions, 570 flow [2022-12-13 17:42:37,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 130 transitions, 568 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:42:37,513 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 229 flow [2022-12-13 17:42:37,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2022-12-13 17:42:37,513 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2022-12-13 17:42:37,513 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 229 flow [2022-12-13 17:42:37,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:37,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:37,514 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 17:42:37,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 17:42:37,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:42:37,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:37,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:37,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1489341300, now seen corresponding path program 1 times [2022-12-13 17:42:37,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:37,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012815400] [2022-12-13 17:42:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:37,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:37,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:42:37,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012815400] [2022-12-13 17:42:37,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012815400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:42:37,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:42:37,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:42:37,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708371129] [2022-12-13 17:42:37,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:42:37,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:42:37,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:42:37,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:42:37,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:42:37,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 447 [2022-12-13 17:42:37,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:37,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:42:37,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 447 [2022-12-13 17:42:37,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:42:43,794 INFO L130 PetriNetUnfolder]: 68140/94280 cut-off events. [2022-12-13 17:42:43,794 INFO L131 PetriNetUnfolder]: For 26699/26699 co-relation queries the response was YES. [2022-12-13 17:42:43,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197746 conditions, 94280 events. 68140/94280 cut-off events. For 26699/26699 co-relation queries the response was YES. Maximal size of possible extension queue 2657. Compared 612579 event pairs, 66340 based on Foata normal form. 1110/86820 useless extension candidates. Maximal degree in co-relation 30937. Up to 90207 conditions per place. [2022-12-13 17:42:44,244 INFO L137 encePairwiseOnDemand]: 445/447 looper letters, 53 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2022-12-13 17:42:44,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 61 transitions, 316 flow [2022-12-13 17:42:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:42:44,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:42:44,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2022-12-13 17:42:44,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48322147651006714 [2022-12-13 17:42:44,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2022-12-13 17:42:44,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2022-12-13 17:42:44,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:42:44,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2022-12-13 17:42:44,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:44,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:44,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:44,251 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 229 flow. Second operand 3 states and 648 transitions. [2022-12-13 17:42:44,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 61 transitions, 316 flow [2022-12-13 17:42:44,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 61 transitions, 308 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 17:42:44,270 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 202 flow [2022-12-13 17:42:44,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2022-12-13 17:42:44,270 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2022-12-13 17:42:44,271 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 202 flow [2022-12-13 17:42:44,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:44,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:44,271 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 17:42:44,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:42:44,271 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:44,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:44,272 INFO L85 PathProgramCache]: Analyzing trace with hash -398738222, now seen corresponding path program 1 times [2022-12-13 17:42:44,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:44,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58986953] [2022-12-13 17:42:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:44,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:42:44,291 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:42:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:42:44,308 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:42:44,309 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:42:44,309 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-13 17:42:44,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-12-13 17:42:44,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-12-13 17:42:44,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-12-13 17:42:44,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-12-13 17:42:44,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-12-13 17:42:44,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-12-13 17:42:44,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-12-13 17:42:44,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-12-13 17:42:44,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-12-13 17:42:44,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-12-13 17:42:44,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 17:42:44,311 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 17:42:44,311 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:42:44,311 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-12-13 17:42:44,334 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-12-13 17:42:44,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 259 transitions, 578 flow [2022-12-13 17:42:44,495 INFO L130 PetriNetUnfolder]: 161/1310 cut-off events. [2022-12-13 17:42:44,495 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 17:42:44,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 1310 events. 161/1310 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6831 event pairs, 23 based on Foata normal form. 0/1057 useless extension candidates. Maximal degree in co-relation 910. Up to 80 conditions per place. [2022-12-13 17:42:44,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 259 transitions, 578 flow [2022-12-13 17:42:44,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 259 transitions, 578 flow [2022-12-13 17:42:44,506 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:42:44,506 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 259 transitions, 578 flow [2022-12-13 17:42:44,506 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 259 transitions, 578 flow [2022-12-13 17:42:44,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 259 transitions, 578 flow [2022-12-13 17:42:44,674 INFO L130 PetriNetUnfolder]: 161/1310 cut-off events. [2022-12-13 17:42:44,674 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 17:42:44,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 1310 events. 161/1310 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6831 event pairs, 23 based on Foata normal form. 0/1057 useless extension candidates. Maximal degree in co-relation 910. Up to 80 conditions per place. [2022-12-13 17:42:44,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 32340 [2022-12-13 17:42:48,213 INFO L134 LiptonReduction]: Checked pairs total: 56611 [2022-12-13 17:42:48,213 INFO L136 LiptonReduction]: Total number of compositions: 231 [2022-12-13 17:42:48,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:42:48,215 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;@3309e864, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:42:48,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 17:42:48,216 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-12-13 17:42:48,216 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:42:48,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:42:48,216 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:42:48,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:42:48,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:48,217 INFO L85 PathProgramCache]: Analyzing trace with hash 73692824, now seen corresponding path program 1 times [2022-12-13 17:42:48,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:48,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20856935] [2022-12-13 17:42:48,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:48,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:42:48,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:42:48,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20856935] [2022-12-13 17:42:48,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20856935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:42:48,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:42:48,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:42:48,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95886843] [2022-12-13 17:42:48,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:42:48,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:42:48,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:42:48,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:42:48,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:42:48,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 490 [2022-12-13 17:42:48,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 84 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:42:48,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:42:48,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 490 [2022-12-13 17:42:48,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:43:31,713 INFO L130 PetriNetUnfolder]: 574095/739204 cut-off events. [2022-12-13 17:43:31,714 INFO L131 PetriNetUnfolder]: For 36602/36602 co-relation queries the response was YES. [2022-12-13 17:43:32,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484040 conditions, 739204 events. 574095/739204 cut-off events. For 36602/36602 co-relation queries the response was YES. Maximal size of possible extension queue 16985. Compared 5088159 event pairs, 441245 based on Foata normal form. 90192/752033 useless extension candidates. Maximal degree in co-relation 202271. Up to 727366 conditions per place. [2022-12-13 17:43:35,210 INFO L137 encePairwiseOnDemand]: 468/490 looper letters, 63 selfloop transitions, 2 changer transitions 1/74 dead transitions. [2022-12-13 17:43:35,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 340 flow [2022-12-13 17:43:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:43:35,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:43:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 736 transitions. [2022-12-13 17:43:35,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5006802721088436 [2022-12-13 17:43:35,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 736 transitions. [2022-12-13 17:43:35,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 736 transitions. [2022-12-13 17:43:35,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:43:35,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 736 transitions. [2022-12-13 17:43:35,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:43:35,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:43:35,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:43:35,217 INFO L175 Difference]: Start difference. First operand has 71 places, 84 transitions, 228 flow. Second operand 3 states and 736 transitions. [2022-12-13 17:43:35,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 340 flow [2022-12-13 17:43:35,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:43:35,223 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 208 flow [2022-12-13 17:43:35,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2022-12-13 17:43:35,224 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2022-12-13 17:43:35,224 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 208 flow [2022-12-13 17:43:35,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:43:35,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:43:35,225 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:43:35,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 17:43:35,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:43:35,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:43:35,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1214874644, now seen corresponding path program 1 times [2022-12-13 17:43:35,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:43:35,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297829485] [2022-12-13 17:43:35,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:43:35,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:43:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:43:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:43:35,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:43:35,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297829485] [2022-12-13 17:43:35,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297829485] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:43:35,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016836485] [2022-12-13 17:43:35,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:43:35,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:43:35,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:43:35,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:43:35,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:43:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:43:35,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:43:35,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:43:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:43:35,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:43:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:43:35,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016836485] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:43:35,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:43:35,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 17:43:35,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283749995] [2022-12-13 17:43:35,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:43:35,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:43:35,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:43:35,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:43:35,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:43:35,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 490 [2022-12-13 17:43:35,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 208 flow. Second operand has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:43:35,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:43:35,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 490 [2022-12-13 17:43:35,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:44:12,815 INFO L130 PetriNetUnfolder]: 510244/663511 cut-off events. [2022-12-13 17:44:12,815 INFO L131 PetriNetUnfolder]: For 32748/32748 co-relation queries the response was YES. [2022-12-13 17:44:13,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342003 conditions, 663511 events. 510244/663511 cut-off events. For 32748/32748 co-relation queries the response was YES. Maximal size of possible extension queue 15390. Compared 4633298 event pairs, 13020 based on Foata normal form. 186/609198 useless extension candidates. Maximal degree in co-relation 240105. Up to 569068 conditions per place. [2022-12-13 17:44:15,813 INFO L137 encePairwiseOnDemand]: 484/490 looper letters, 128 selfloop transitions, 9 changer transitions 0/145 dead transitions. [2022-12-13 17:44:15,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 145 transitions, 644 flow [2022-12-13 17:44:15,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:44:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:44:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1648 transitions. [2022-12-13 17:44:15,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.480466472303207 [2022-12-13 17:44:15,817 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1648 transitions. [2022-12-13 17:44:15,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1648 transitions. [2022-12-13 17:44:15,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:44:15,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1648 transitions. [2022-12-13 17:44:15,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 235.42857142857142) internal successors, (1648), 7 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:44:15,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 490.0) internal successors, (3920), 8 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:44:15,824 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 490.0) internal successors, (3920), 8 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:44:15,824 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 208 flow. Second operand 7 states and 1648 transitions. [2022-12-13 17:44:15,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 145 transitions, 644 flow [2022-12-13 17:44:15,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 145 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:44:15,828 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 259 flow [2022-12-13 17:44:15,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2022-12-13 17:44:15,828 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 10 predicate places. [2022-12-13 17:44:15,829 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 259 flow [2022-12-13 17:44:15,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:44:15,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:44:15,829 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 17:44:15,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:44:16,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4ec0ab-e86f-4e86-a99f-c7636c34eaf0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 17:44:16,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:44:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:44:16,032 INFO L85 PathProgramCache]: Analyzing trace with hash 993447212, now seen corresponding path program 1 times [2022-12-13 17:44:16,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:44:16,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484804662] [2022-12-13 17:44:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:44:16,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:44:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:16,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:44:16,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:44:16,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484804662] [2022-12-13 17:44:16,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484804662] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:44:16,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:44:16,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:44:16,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760662465] [2022-12-13 17:44:16,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:44:16,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:44:16,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:44:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:44:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:44:16,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 490 [2022-12-13 17:44:16,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:44:16,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:44:16,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 490 [2022-12-13 17:44:16,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:44:56,005 INFO L130 PetriNetUnfolder]: 489105/629812 cut-off events. [2022-12-13 17:44:56,006 INFO L131 PetriNetUnfolder]: For 138637/138637 co-relation queries the response was YES. [2022-12-13 17:44:57,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313607 conditions, 629812 events. 489105/629812 cut-off events. For 138637/138637 co-relation queries the response was YES. Maximal size of possible extension queue 14683. Compared 4207690 event pairs, 477093 based on Foata normal form. 5430/585687 useless extension candidates. Maximal degree in co-relation 174785. Up to 618335 conditions per place. [2022-12-13 17:44:59,255 INFO L137 encePairwiseOnDemand]: 488/490 looper letters, 59 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2022-12-13 17:44:59,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 68 transitions, 358 flow [2022-12-13 17:44:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:44:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:44:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2022-12-13 17:44:59,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2022-12-13 17:44:59,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2022-12-13 17:44:59,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2022-12-13 17:44:59,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:44:59,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2022-12-13 17:44:59,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:44:59,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:44:59,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:44:59,262 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 259 flow. Second operand 3 states and 705 transitions. [2022-12-13 17:44:59,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 68 transitions, 358 flow [2022-12-13 17:44:59,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 68 transitions, 350 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 17:44:59,323 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 232 flow [2022-12-13 17:44:59,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2022-12-13 17:44:59,323 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places. [2022-12-13 17:44:59,323 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 232 flow [2022-12-13 17:44:59,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:44:59,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:44:59,324 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:44:59,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 17:44:59,324 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:44:59,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:44:59,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1150223778, now seen corresponding path program 1 times [2022-12-13 17:44:59,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:44:59,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049035582] [2022-12-13 17:44:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:44:59,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:44:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 17:44:59,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:44:59,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049035582] [2022-12-13 17:44:59,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049035582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:44:59,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:44:59,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:44:59,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892626550] [2022-12-13 17:44:59,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:44:59,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:44:59,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:44:59,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:44:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:44:59,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 490 [2022-12-13 17:44:59,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:44:59,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:44:59,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 490 [2022-12-13 17:44:59,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:46:02,419 INFO L130 PetriNetUnfolder]: 784505/1003212 cut-off events. [2022-12-13 17:46:02,420 INFO L131 PetriNetUnfolder]: For 105539/105539 co-relation queries the response was YES. [2022-12-13 17:46:04,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050478 conditions, 1003212 events. 784505/1003212 cut-off events. For 105539/105539 co-relation queries the response was YES. Maximal size of possible extension queue 23438. Compared 6896384 event pairs, 497818 based on Foata normal form. 0/922607 useless extension candidates. Maximal degree in co-relation 2050460. Up to 644311 conditions per place. [2022-12-13 17:46:07,481 INFO L137 encePairwiseOnDemand]: 483/490 looper letters, 115 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2022-12-13 17:46:07,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 126 transitions, 586 flow [2022-12-13 17:46:07,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:46:07,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:46:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 966 transitions. [2022-12-13 17:46:07,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2022-12-13 17:46:07,484 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 966 transitions. [2022-12-13 17:46:07,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 966 transitions. [2022-12-13 17:46:07,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:46:07,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 966 transitions. [2022-12-13 17:46:07,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 241.5) internal successors, (966), 4 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:46:07,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 490.0) internal successors, (2450), 5 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:46:07,489 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 490.0) internal successors, (2450), 5 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:46:07,489 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 232 flow. Second operand 4 states and 966 transitions. [2022-12-13 17:46:07,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 126 transitions, 586 flow [2022-12-13 17:46:07,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 126 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:46:07,527 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 263 flow [2022-12-13 17:46:07,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2022-12-13 17:46:07,528 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 13 predicate places. [2022-12-13 17:46:07,528 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 263 flow [2022-12-13 17:46:07,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:46:07,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:46:07,528 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:46:07,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 17:46:07,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-12-13 17:46:07,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:46:07,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1297220394, now seen corresponding path program 1 times [2022-12-13 17:46:07,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:46:07,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939737159] [2022-12-13 17:46:07,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:46:07,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:46:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 17:46:07,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:46:07,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939737159] [2022-12-13 17:46:07,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939737159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:46:07,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:46:07,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:46:07,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434666106] [2022-12-13 17:46:07,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:46:07,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:46:07,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:46:07,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:46:07,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:46:07,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 490 [2022-12-13 17:46:07,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:46:07,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:46:07,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 490 [2022-12-13 17:46:07,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand