./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro --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 739dc04b5c5aa67083a96cc98ccb84e17de2a97ca235c28aa84e8c99a10b0a9e --- 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-8393723 [2022-11-18 20:36:11,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:36:11,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:36:11,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:36:11,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:36:11,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:36:11,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:36:11,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:36:11,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:36:11,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:36:11,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:36:11,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:36:11,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:36:11,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:36:11,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:36:11,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:36:11,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:36:11,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:36:11,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:36:11,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:36:11,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:36:11,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:36:11,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:36:11,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:36:11,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:36:11,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:36:11,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:36:11,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:36:11,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:36:11,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:36:11,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:36:11,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:36:11,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:36:11,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:36:11,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:36:11,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:36:11,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:36:11,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:36:11,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:36:11,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:36:11,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:36:11,341 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:36:11,394 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:36:11,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:36:11,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:36:11,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:36:11,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:36:11,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:36:11,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:36:11,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:36:11,400 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:36:11,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:36:11,402 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:36:11,402 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:36:11,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:36:11,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:36:11,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:36:11,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:36:11,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:36:11,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:36:11,404 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:36:11,404 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:36:11,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:36:11,405 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:36:11,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:36:11,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:36:11,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:36:11,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:36:11,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:36:11,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:36:11,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:36:11,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:36:11,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:36:11,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:36:11,411 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:36:11,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:36:11,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:36:11,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739dc04b5c5aa67083a96cc98ccb84e17de2a97ca235c28aa84e8c99a10b0a9e [2022-11-18 20:36:11,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:36:11,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:36:11,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:36:11,787 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:36:11,788 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:36:11,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2022-11-18 20:36:11,883 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/data/fd4be0f64/f2895f9a25df4c6b8201a3d5a46ac9bf/FLAG8ac121309 [2022-11-18 20:36:12,486 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:36:12,487 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2022-11-18 20:36:12,501 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/data/fd4be0f64/f2895f9a25df4c6b8201a3d5a46ac9bf/FLAG8ac121309 [2022-11-18 20:36:12,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/data/fd4be0f64/f2895f9a25df4c6b8201a3d5a46ac9bf [2022-11-18 20:36:12,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:36:12,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:36:12,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:36:12,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:36:12,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:36:12,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:36:12" (1/1) ... [2022-11-18 20:36:12,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fbb1f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:12, skipping insertion in model container [2022-11-18 20:36:12,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:36:12" (1/1) ... [2022-11-18 20:36:12,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:36:12,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:36:13,110 WARN L234 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_8950e593-ccd9-42eb-b0b6-c04f16053ecd/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2507,2520] [2022-11-18 20:36:13,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:36:13,122 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:36:13,151 WARN L234 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_8950e593-ccd9-42eb-b0b6-c04f16053ecd/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2507,2520] [2022-11-18 20:36:13,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:36:13,170 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:36:13,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13 WrapperNode [2022-11-18 20:36:13,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:36:13,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:36:13,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:36:13,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:36:13,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13" (1/1) ... [2022-11-18 20:36:13,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13" (1/1) ... [2022-11-18 20:36:13,225 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2022-11-18 20:36:13,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:36:13,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:36:13,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:36:13,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:36:13,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13" (1/1) ... [2022-11-18 20:36:13,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13" (1/1) ... [2022-11-18 20:36:13,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13" (1/1) ... [2022-11-18 20:36:13,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13" (1/1) ... [2022-11-18 20:36:13,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13" (1/1) ... [2022-11-18 20:36:13,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13" (1/1) ... [2022-11-18 20:36:13,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13" (1/1) ... [2022-11-18 20:36:13,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13" (1/1) ... [2022-11-18 20:36:13,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:36:13,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:36:13,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:36:13,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:36:13,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13" (1/1) ... [2022-11-18 20:36:13,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:36:13,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:13,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:36:13,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:36:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:36:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:36:13,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:36:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:36:13,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:36:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:36:13,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:36:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 20:36:13,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 20:36:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:36:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:36:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:36:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:36:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:36:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:36:13,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:36:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:36:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:36:13,387 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:36:13,513 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:36:13,516 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:36:13,853 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:36:14,032 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:36:14,047 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:36:14,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:36:14 BoogieIcfgContainer [2022-11-18 20:36:14,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:36:14,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:36:14,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:36:14,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:36:14,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:36:12" (1/3) ... [2022-11-18 20:36:14,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297e2c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:36:14, skipping insertion in model container [2022-11-18 20:36:14,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:13" (2/3) ... [2022-11-18 20:36:14,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297e2c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:36:14, skipping insertion in model container [2022-11-18 20:36:14,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:36:14" (3/3) ... [2022-11-18 20:36:14,068 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2022-11-18 20:36:14,079 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:36:14,093 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:36:14,094 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 20:36:14,094 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:36:14,365 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:36:14,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 151 transitions, 334 flow [2022-11-18 20:36:14,606 INFO L130 PetriNetUnfolder]: 9/147 cut-off events. [2022-11-18 20:36:14,606 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:36:14,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 147 events. 9/147 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 186 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-11-18 20:36:14,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 151 transitions, 334 flow [2022-11-18 20:36:14,631 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 124 transitions, 269 flow [2022-11-18 20:36:14,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:36:14,679 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;@413c2b86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:36:14,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-18 20:36:14,706 INFO L130 PetriNetUnfolder]: 1/37 cut-off events. [2022-11-18 20:36:14,706 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:36:14,707 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:14,709 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:14,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:36:14,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:14,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1668384649, now seen corresponding path program 1 times [2022-11-18 20:36:14,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:14,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789841375] [2022-11-18 20:36:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:14,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:15,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:15,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789841375] [2022-11-18 20:36:15,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789841375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:15,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:15,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:36:15,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388782404] [2022-11-18 20:36:15,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:15,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:15,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:15,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:15,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:15,256 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 151 [2022-11-18 20:36:15,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:15,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:15,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 151 [2022-11-18 20:36:15,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:16,051 INFO L130 PetriNetUnfolder]: 795/2231 cut-off events. [2022-11-18 20:36:16,052 INFO L131 PetriNetUnfolder]: For 343/344 co-relation queries the response was YES. [2022-11-18 20:36:16,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3489 conditions, 2231 events. 795/2231 cut-off events. For 343/344 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17011 event pairs, 137 based on Foata normal form. 398/1743 useless extension candidates. Maximal degree in co-relation 3209. Up to 908 conditions per place. [2022-11-18 20:36:16,100 INFO L137 encePairwiseOnDemand]: 139/151 looper letters, 28 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2022-11-18 20:36:16,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 130 transitions, 359 flow [2022-11-18 20:36:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:36:16,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2022-11-18 20:36:16,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9161147902869757 [2022-11-18 20:36:16,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2022-11-18 20:36:16,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2022-11-18 20:36:16,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:16,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2022-11-18 20:36:16,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:16,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 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) [2022-11-18 20:36:16,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 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) [2022-11-18 20:36:16,163 INFO L175 Difference]: Start difference. First operand has 129 places, 124 transitions, 269 flow. Second operand 3 states and 415 transitions. [2022-11-18 20:36:16,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 130 transitions, 359 flow [2022-11-18 20:36:16,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 130 transitions, 335 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:36:16,180 INFO L231 Difference]: Finished difference. Result has 123 places, 119 transitions, 262 flow [2022-11-18 20:36:16,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2022-11-18 20:36:16,190 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, -6 predicate places. [2022-11-18 20:36:16,191 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 262 flow [2022-11-18 20:36:16,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:16,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:16,193 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:16,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:36:16,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:36:16,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:16,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1294830726, now seen corresponding path program 1 times [2022-11-18 20:36:16,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:16,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088349191] [2022-11-18 20:36:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:16,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:16,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088349191] [2022-11-18 20:36:16,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088349191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:16,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:16,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:16,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551127861] [2022-11-18 20:36:16,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:16,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:36:16,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:16,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:36:16,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:36:16,500 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-11-18 20:36:16,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:16,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:16,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-11-18 20:36:16,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:17,956 INFO L130 PetriNetUnfolder]: 3366/7182 cut-off events. [2022-11-18 20:36:17,956 INFO L131 PetriNetUnfolder]: For 743/755 co-relation queries the response was YES. [2022-11-18 20:36:17,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13442 conditions, 7182 events. 3366/7182 cut-off events. For 743/755 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 59747 event pairs, 1104 based on Foata normal form. 1/4259 useless extension candidates. Maximal degree in co-relation 9608. Up to 3019 conditions per place. [2022-11-18 20:36:18,089 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 64 selfloop transitions, 4 changer transitions 0/159 dead transitions. [2022-11-18 20:36:18,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 159 transitions, 505 flow [2022-11-18 20:36:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:36:18,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:36:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 645 transitions. [2022-11-18 20:36:18,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8543046357615894 [2022-11-18 20:36:18,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 645 transitions. [2022-11-18 20:36:18,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 645 transitions. [2022-11-18 20:36:18,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:18,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 645 transitions. [2022-11-18 20:36:18,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:18,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:18,104 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:18,105 INFO L175 Difference]: Start difference. First operand has 123 places, 119 transitions, 262 flow. Second operand 5 states and 645 transitions. [2022-11-18 20:36:18,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 159 transitions, 505 flow [2022-11-18 20:36:18,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 159 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:36:18,115 INFO L231 Difference]: Finished difference. Result has 129 places, 122 transitions, 290 flow [2022-11-18 20:36:18,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=129, PETRI_TRANSITIONS=122} [2022-11-18 20:36:18,118 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 0 predicate places. [2022-11-18 20:36:18,118 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 122 transitions, 290 flow [2022-11-18 20:36:18,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:18,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:18,120 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:18,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:36:18,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:36:18,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1746367030, now seen corresponding path program 1 times [2022-11-18 20:36:18,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:18,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926305623] [2022-11-18 20:36:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:18,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:18,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:18,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926305623] [2022-11-18 20:36:18,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926305623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005288391] [2022-11-18 20:36:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:18,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:18,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:18,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:18,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:36:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:18,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:36:18,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:18,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:18,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005288391] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:18,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:18,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-18 20:36:18,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312895394] [2022-11-18 20:36:18,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:18,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:36:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:18,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:36:18,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:36:18,700 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 151 [2022-11-18 20:36:18,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 122 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:18,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:18,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 151 [2022-11-18 20:36:18,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:19,759 INFO L130 PetriNetUnfolder]: 1635/4659 cut-off events. [2022-11-18 20:36:19,759 INFO L131 PetriNetUnfolder]: For 698/783 co-relation queries the response was YES. [2022-11-18 20:36:19,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8416 conditions, 4659 events. 1635/4659 cut-off events. For 698/783 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 40383 event pairs, 172 based on Foata normal form. 63/3387 useless extension candidates. Maximal degree in co-relation 6499. Up to 777 conditions per place. [2022-11-18 20:36:19,826 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 69 selfloop transitions, 12 changer transitions 0/184 dead transitions. [2022-11-18 20:36:19,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 184 transitions, 628 flow [2022-11-18 20:36:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:36:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:36:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 953 transitions. [2022-11-18 20:36:19,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9016083254493851 [2022-11-18 20:36:19,830 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 953 transitions. [2022-11-18 20:36:19,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 953 transitions. [2022-11-18 20:36:19,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:19,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 953 transitions. [2022-11-18 20:36:19,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:19,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:19,839 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:19,839 INFO L175 Difference]: Start difference. First operand has 129 places, 122 transitions, 290 flow. Second operand 7 states and 953 transitions. [2022-11-18 20:36:19,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 184 transitions, 628 flow [2022-11-18 20:36:19,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 184 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:36:19,847 INFO L231 Difference]: Finished difference. Result has 139 places, 131 transitions, 397 flow [2022-11-18 20:36:19,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=139, PETRI_TRANSITIONS=131} [2022-11-18 20:36:19,848 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 10 predicate places. [2022-11-18 20:36:19,848 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 131 transitions, 397 flow [2022-11-18 20:36:19,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:19,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:19,850 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:19,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:20,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:20,057 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:36:20,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1746367031, now seen corresponding path program 1 times [2022-11-18 20:36:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:20,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141519616] [2022-11-18 20:36:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:20,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:20,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:20,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141519616] [2022-11-18 20:36:20,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141519616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:20,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:20,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:36:20,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260973308] [2022-11-18 20:36:20,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:20,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:20,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:20,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:20,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 151 [2022-11-18 20:36:20,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 131 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:20,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:20,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 151 [2022-11-18 20:36:20,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:21,168 INFO L130 PetriNetUnfolder]: 1427/4577 cut-off events. [2022-11-18 20:36:21,169 INFO L131 PetriNetUnfolder]: For 6739/7443 co-relation queries the response was YES. [2022-11-18 20:36:21,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9433 conditions, 4577 events. 1427/4577 cut-off events. For 6739/7443 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 41221 event pairs, 764 based on Foata normal form. 96/3314 useless extension candidates. Maximal degree in co-relation 7273. Up to 1909 conditions per place. [2022-11-18 20:36:21,259 INFO L137 encePairwiseOnDemand]: 149/151 looper letters, 23 selfloop transitions, 1 changer transitions 0/127 dead transitions. [2022-11-18 20:36:21,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 127 transitions, 414 flow [2022-11-18 20:36:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:36:21,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-11-18 20:36:21,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8543046357615894 [2022-11-18 20:36:21,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-11-18 20:36:21,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-11-18 20:36:21,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:21,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-11-18 20:36:21,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:21,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 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) [2022-11-18 20:36:21,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 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) [2022-11-18 20:36:21,268 INFO L175 Difference]: Start difference. First operand has 139 places, 131 transitions, 397 flow. Second operand 3 states and 387 transitions. [2022-11-18 20:36:21,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 127 transitions, 414 flow [2022-11-18 20:36:21,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 127 transitions, 402 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 20:36:21,285 INFO L231 Difference]: Finished difference. Result has 138 places, 127 transitions, 356 flow [2022-11-18 20:36:21,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=138, PETRI_TRANSITIONS=127} [2022-11-18 20:36:21,287 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 9 predicate places. [2022-11-18 20:36:21,287 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 127 transitions, 356 flow [2022-11-18 20:36:21,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:21,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:21,289 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:21,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:36:21,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:36:21,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:21,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1073481351, now seen corresponding path program 1 times [2022-11-18 20:36:21,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:21,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210891353] [2022-11-18 20:36:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:21,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:21,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:21,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210891353] [2022-11-18 20:36:21,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210891353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:21,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995347446] [2022-11-18 20:36:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:21,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:21,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:21,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:21,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:36:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:21,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:36:21,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:21,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:21,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995347446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:21,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:21,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:36:21,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826218457] [2022-11-18 20:36:21,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:21,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:36:21,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:36:21,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:36:21,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-11-18 20:36:21,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 127 transitions, 356 flow. Second operand has 12 states, 12 states have (on average 117.66666666666667) internal successors, (1412), 12 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:21,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:21,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-11-18 20:36:21,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:25,773 INFO L130 PetriNetUnfolder]: 11390/19212 cut-off events. [2022-11-18 20:36:25,773 INFO L131 PetriNetUnfolder]: For 25573/25573 co-relation queries the response was YES. [2022-11-18 20:36:25,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50283 conditions, 19212 events. 11390/19212 cut-off events. For 25573/25573 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 145111 event pairs, 1406 based on Foata normal form. 275/14046 useless extension candidates. Maximal degree in co-relation 50258. Up to 3720 conditions per place. [2022-11-18 20:36:26,148 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 237 selfloop transitions, 18 changer transitions 0/346 dead transitions. [2022-11-18 20:36:26,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 346 transitions, 1701 flow [2022-11-18 20:36:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:36:26,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:36:26,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2294 transitions. [2022-11-18 20:36:26,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8440029433406917 [2022-11-18 20:36:26,156 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2294 transitions. [2022-11-18 20:36:26,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2294 transitions. [2022-11-18 20:36:26,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:26,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2294 transitions. [2022-11-18 20:36:26,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 127.44444444444444) internal successors, (2294), 18 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:26,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 151.0) internal successors, (2869), 19 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:26,278 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 151.0) internal successors, (2869), 19 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:26,278 INFO L175 Difference]: Start difference. First operand has 138 places, 127 transitions, 356 flow. Second operand 18 states and 2294 transitions. [2022-11-18 20:36:26,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 346 transitions, 1701 flow [2022-11-18 20:36:26,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 346 transitions, 1700 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:36:26,309 INFO L231 Difference]: Finished difference. Result has 158 places, 139 transitions, 461 flow [2022-11-18 20:36:26,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=461, PETRI_PLACES=158, PETRI_TRANSITIONS=139} [2022-11-18 20:36:26,313 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 29 predicate places. [2022-11-18 20:36:26,313 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 139 transitions, 461 flow [2022-11-18 20:36:26,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 117.66666666666667) internal successors, (1412), 12 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:26,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:26,315 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:26,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:26,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:26,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:36:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:26,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1081816947, now seen corresponding path program 1 times [2022-11-18 20:36:26,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:26,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378259561] [2022-11-18 20:36:26,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:26,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:26,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:26,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378259561] [2022-11-18 20:36:26,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378259561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:26,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113673437] [2022-11-18 20:36:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:26,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:26,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:26,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:26,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:36:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:26,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:36:26,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:26,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:36:26,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113673437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:26,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:36:26,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:36:26,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618023381] [2022-11-18 20:36:26,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:26,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:36:26,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:26,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:36:26,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:36:26,799 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-11-18 20:36:26,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 139 transitions, 461 flow. Second operand has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:26,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:26,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-11-18 20:36:26,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:29,925 INFO L130 PetriNetUnfolder]: 10249/18027 cut-off events. [2022-11-18 20:36:29,925 INFO L131 PetriNetUnfolder]: For 25865/26361 co-relation queries the response was YES. [2022-11-18 20:36:30,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48124 conditions, 18027 events. 10249/18027 cut-off events. For 25865/26361 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 143280 event pairs, 603 based on Foata normal form. 517/13352 useless extension candidates. Maximal degree in co-relation 48096. Up to 6763 conditions per place. [2022-11-18 20:36:30,448 INFO L137 encePairwiseOnDemand]: 146/151 looper letters, 87 selfloop transitions, 11 changer transitions 0/189 dead transitions. [2022-11-18 20:36:30,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 189 transitions, 801 flow [2022-11-18 20:36:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:36:30,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:36:30,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 887 transitions. [2022-11-18 20:36:30,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8391674550614948 [2022-11-18 20:36:30,453 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 887 transitions. [2022-11-18 20:36:30,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 887 transitions. [2022-11-18 20:36:30,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:30,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 887 transitions. [2022-11-18 20:36:30,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.71428571428571) internal successors, (887), 7 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:30,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:30,461 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:30,461 INFO L175 Difference]: Start difference. First operand has 158 places, 139 transitions, 461 flow. Second operand 7 states and 887 transitions. [2022-11-18 20:36:30,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 189 transitions, 801 flow [2022-11-18 20:36:30,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 189 transitions, 769 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:36:30,498 INFO L231 Difference]: Finished difference. Result has 154 places, 135 transitions, 424 flow [2022-11-18 20:36:30,499 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2022-11-18 20:36:30,502 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 25 predicate places. [2022-11-18 20:36:30,502 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 424 flow [2022-11-18 20:36:30,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:30,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:30,503 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:30,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:30,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:30,709 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:36:30,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:30,710 INFO L85 PathProgramCache]: Analyzing trace with hash -147609849, now seen corresponding path program 1 times [2022-11-18 20:36:30,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:30,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111606128] [2022-11-18 20:36:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:30,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:30,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:30,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111606128] [2022-11-18 20:36:30,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111606128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:30,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:30,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:30,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435884589] [2022-11-18 20:36:30,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:30,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:36:30,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:36:30,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:36:30,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-11-18 20:36:30,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 424 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:30,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:30,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-11-18 20:36:30,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:35,857 INFO L130 PetriNetUnfolder]: 19538/31216 cut-off events. [2022-11-18 20:36:35,857 INFO L131 PetriNetUnfolder]: For 26619/33559 co-relation queries the response was YES. [2022-11-18 20:36:36,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74115 conditions, 31216 events. 19538/31216 cut-off events. For 26619/33559 co-relation queries the response was YES. Maximal size of possible extension queue 1472. Compared 261626 event pairs, 9697 based on Foata normal form. 88/18720 useless extension candidates. Maximal degree in co-relation 74088. Up to 18916 conditions per place. [2022-11-18 20:36:36,266 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 85 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2022-11-18 20:36:36,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 191 transitions, 859 flow [2022-11-18 20:36:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:36:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:36:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2022-11-18 20:36:36,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8529801324503311 [2022-11-18 20:36:36,270 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2022-11-18 20:36:36,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2022-11-18 20:36:36,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:36,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2022-11-18 20:36:36,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:36,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:36,279 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:36,280 INFO L175 Difference]: Start difference. First operand has 154 places, 135 transitions, 424 flow. Second operand 5 states and 644 transitions. [2022-11-18 20:36:36,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 191 transitions, 859 flow [2022-11-18 20:36:36,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 191 transitions, 845 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:36:36,319 INFO L231 Difference]: Finished difference. Result has 156 places, 138 transitions, 440 flow [2022-11-18 20:36:36,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=440, PETRI_PLACES=156, PETRI_TRANSITIONS=138} [2022-11-18 20:36:36,320 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 27 predicate places. [2022-11-18 20:36:36,320 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 138 transitions, 440 flow [2022-11-18 20:36:36,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:36,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:36,321 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:36,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:36:36,322 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:36:36,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:36,322 INFO L85 PathProgramCache]: Analyzing trace with hash 825674972, now seen corresponding path program 1 times [2022-11-18 20:36:36,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:36,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361294372] [2022-11-18 20:36:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:36,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:36,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:36,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361294372] [2022-11-18 20:36:36,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361294372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:36,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:36,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:36:36,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050702569] [2022-11-18 20:36:36,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:36,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:36,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:36,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 151 [2022-11-18 20:36:36,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 138 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:36,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:36,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 151 [2022-11-18 20:36:36,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:37,931 INFO L130 PetriNetUnfolder]: 2766/8917 cut-off events. [2022-11-18 20:36:37,931 INFO L131 PetriNetUnfolder]: For 8940/9079 co-relation queries the response was YES. [2022-11-18 20:36:37,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17433 conditions, 8917 events. 2766/8917 cut-off events. For 8940/9079 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 91253 event pairs, 904 based on Foata normal form. 105/6978 useless extension candidates. Maximal degree in co-relation 17402. Up to 3347 conditions per place. [2022-11-18 20:36:38,025 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 37 selfloop transitions, 2 changer transitions 1/154 dead transitions. [2022-11-18 20:36:38,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 154 transitions, 622 flow [2022-11-18 20:36:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:36:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-11-18 20:36:38,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8807947019867549 [2022-11-18 20:36:38,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-11-18 20:36:38,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-11-18 20:36:38,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:38,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-11-18 20:36:38,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:38,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 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) [2022-11-18 20:36:38,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 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) [2022-11-18 20:36:38,032 INFO L175 Difference]: Start difference. First operand has 156 places, 138 transitions, 440 flow. Second operand 3 states and 399 transitions. [2022-11-18 20:36:38,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 154 transitions, 622 flow [2022-11-18 20:36:38,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 154 transitions, 620 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:36:38,041 INFO L231 Difference]: Finished difference. Result has 158 places, 139 transitions, 456 flow [2022-11-18 20:36:38,042 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=158, PETRI_TRANSITIONS=139} [2022-11-18 20:36:38,043 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 29 predicate places. [2022-11-18 20:36:38,043 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 139 transitions, 456 flow [2022-11-18 20:36:38,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:38,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:38,044 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:38,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:36:38,044 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:36:38,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:38,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1095285089, now seen corresponding path program 1 times [2022-11-18 20:36:38,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:38,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161716889] [2022-11-18 20:36:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:38,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:38,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:38,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:38,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161716889] [2022-11-18 20:36:38,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161716889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:38,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:38,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:38,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194808586] [2022-11-18 20:36:38,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:38,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:36:38,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:38,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:36:38,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:36:38,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-11-18 20:36:38,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 139 transitions, 456 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:38,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:38,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-11-18 20:36:38,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:42,686 INFO L130 PetriNetUnfolder]: 12928/24790 cut-off events. [2022-11-18 20:36:42,687 INFO L131 PetriNetUnfolder]: For 46823/47253 co-relation queries the response was YES. [2022-11-18 20:36:42,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69520 conditions, 24790 events. 12928/24790 cut-off events. For 46823/47253 co-relation queries the response was YES. Maximal size of possible extension queue 1449. Compared 245585 event pairs, 4981 based on Foata normal form. 7/19220 useless extension candidates. Maximal degree in co-relation 69488. Up to 12095 conditions per place. [2022-11-18 20:36:43,013 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 85 selfloop transitions, 4 changer transitions 1/195 dead transitions. [2022-11-18 20:36:43,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 195 transitions, 968 flow [2022-11-18 20:36:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:36:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:36:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 639 transitions. [2022-11-18 20:36:43,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8463576158940397 [2022-11-18 20:36:43,018 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 639 transitions. [2022-11-18 20:36:43,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 639 transitions. [2022-11-18 20:36:43,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:43,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 639 transitions. [2022-11-18 20:36:43,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:43,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:43,024 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:43,024 INFO L175 Difference]: Start difference. First operand has 158 places, 139 transitions, 456 flow. Second operand 5 states and 639 transitions. [2022-11-18 20:36:43,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 195 transitions, 968 flow [2022-11-18 20:36:43,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 195 transitions, 966 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:36:43,040 INFO L231 Difference]: Finished difference. Result has 164 places, 142 transitions, 484 flow [2022-11-18 20:36:43,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=164, PETRI_TRANSITIONS=142} [2022-11-18 20:36:43,042 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 35 predicate places. [2022-11-18 20:36:43,042 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 142 transitions, 484 flow [2022-11-18 20:36:43,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:43,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:43,043 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:43,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:36:43,044 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:36:43,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:43,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2050213457, now seen corresponding path program 1 times [2022-11-18 20:36:43,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:43,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18362012] [2022-11-18 20:36:43,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:43,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:43,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18362012] [2022-11-18 20:36:43,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18362012] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726274534] [2022-11-18 20:36:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:43,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:43,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:43,125 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:43,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:36:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:36:43,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:43,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:43,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726274534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:43,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:43,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-18 20:36:43,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406375131] [2022-11-18 20:36:43,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:43,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:36:43,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:43,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:36:43,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:36:43,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 151 [2022-11-18 20:36:43,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 142 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:43,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:43,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 151 [2022-11-18 20:36:43,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:47,224 INFO L130 PetriNetUnfolder]: 5155/18841 cut-off events. [2022-11-18 20:36:47,224 INFO L131 PetriNetUnfolder]: For 17449/18044 co-relation queries the response was YES. [2022-11-18 20:36:47,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41386 conditions, 18841 events. 5155/18841 cut-off events. For 17449/18044 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 228952 event pairs, 436 based on Foata normal form. 335/15926 useless extension candidates. Maximal degree in co-relation 41350. Up to 3687 conditions per place. [2022-11-18 20:36:47,496 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 97 selfloop transitions, 12 changer transitions 0/226 dead transitions. [2022-11-18 20:36:47,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 226 transitions, 1239 flow [2022-11-18 20:36:47,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:36:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:36:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 939 transitions. [2022-11-18 20:36:47,499 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8883632923368022 [2022-11-18 20:36:47,499 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 939 transitions. [2022-11-18 20:36:47,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 939 transitions. [2022-11-18 20:36:47,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:47,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 939 transitions. [2022-11-18 20:36:47,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:47,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:47,505 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:47,505 INFO L175 Difference]: Start difference. First operand has 164 places, 142 transitions, 484 flow. Second operand 7 states and 939 transitions. [2022-11-18 20:36:47,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 226 transitions, 1239 flow [2022-11-18 20:36:47,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 226 transitions, 1237 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:36:47,531 INFO L231 Difference]: Finished difference. Result has 174 places, 151 transitions, 591 flow [2022-11-18 20:36:47,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=591, PETRI_PLACES=174, PETRI_TRANSITIONS=151} [2022-11-18 20:36:47,532 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 45 predicate places. [2022-11-18 20:36:47,532 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 151 transitions, 591 flow [2022-11-18 20:36:47,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:47,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:47,533 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:47,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:47,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:36:47,735 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:36:47,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:47,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2050213458, now seen corresponding path program 1 times [2022-11-18 20:36:47,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:47,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214033714] [2022-11-18 20:36:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:47,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:47,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:47,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214033714] [2022-11-18 20:36:47,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214033714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:47,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:47,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:36:47,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725242605] [2022-11-18 20:36:47,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:47,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:47,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:47,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:47,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:47,814 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 151 [2022-11-18 20:36:47,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 151 transitions, 591 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:47,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:47,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 151 [2022-11-18 20:36:47,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:51,207 INFO L130 PetriNetUnfolder]: 4098/17900 cut-off events. [2022-11-18 20:36:51,208 INFO L131 PetriNetUnfolder]: For 39958/45450 co-relation queries the response was YES. [2022-11-18 20:36:51,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44391 conditions, 17900 events. 4098/17900 cut-off events. For 39958/45450 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 222083 event pairs, 2261 based on Foata normal form. 719/15971 useless extension candidates. Maximal degree in co-relation 44349. Up to 5723 conditions per place. [2022-11-18 20:36:51,487 INFO L137 encePairwiseOnDemand]: 149/151 looper letters, 29 selfloop transitions, 1 changer transitions 0/147 dead transitions. [2022-11-18 20:36:51,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 147 transitions, 620 flow [2022-11-18 20:36:51,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:36:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2022-11-18 20:36:51,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8520971302428256 [2022-11-18 20:36:51,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2022-11-18 20:36:51,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2022-11-18 20:36:51,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:51,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2022-11-18 20:36:51,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:51,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 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) [2022-11-18 20:36:51,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 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) [2022-11-18 20:36:51,494 INFO L175 Difference]: Start difference. First operand has 174 places, 151 transitions, 591 flow. Second operand 3 states and 386 transitions. [2022-11-18 20:36:51,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 147 transitions, 620 flow [2022-11-18 20:36:51,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 147 transitions, 608 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 20:36:51,804 INFO L231 Difference]: Finished difference. Result has 173 places, 147 transitions, 550 flow [2022-11-18 20:36:51,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=173, PETRI_TRANSITIONS=147} [2022-11-18 20:36:51,804 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 44 predicate places. [2022-11-18 20:36:51,805 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 147 transitions, 550 flow [2022-11-18 20:36:51,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:51,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:51,805 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:51,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:36:51,806 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:36:51,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1134840108, now seen corresponding path program 1 times [2022-11-18 20:36:51,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:51,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082308860] [2022-11-18 20:36:51,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:51,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:51,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:51,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082308860] [2022-11-18 20:36:51,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082308860] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:51,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587587496] [2022-11-18 20:36:51,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:51,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:51,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:51,914 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:51,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:36:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:52,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:36:52,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:52,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:52,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587587496] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:52,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:52,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:36:52,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016510406] [2022-11-18 20:36:52,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:52,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:36:52,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:52,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:36:52,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:36:52,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-11-18 20:36:52,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 147 transitions, 550 flow. Second operand has 12 states, 12 states have (on average 117.83333333333333) internal successors, (1414), 12 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:52,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:52,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-11-18 20:36:52,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:10,018 INFO L130 PetriNetUnfolder]: 47374/82065 cut-off events. [2022-11-18 20:37:10,018 INFO L131 PetriNetUnfolder]: For 278316/278776 co-relation queries the response was YES. [2022-11-18 20:37:10,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285168 conditions, 82065 events. 47374/82065 cut-off events. For 278316/278776 co-relation queries the response was YES. Maximal size of possible extension queue 3538. Compared 844434 event pairs, 5459 based on Foata normal form. 1438/77517 useless extension candidates. Maximal degree in co-relation 285130. Up to 14973 conditions per place. [2022-11-18 20:37:12,034 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 330 selfloop transitions, 18 changer transitions 1/454 dead transitions. [2022-11-18 20:37:12,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 454 transitions, 3291 flow [2022-11-18 20:37:12,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:37:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:37:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2269 transitions. [2022-11-18 20:37:12,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8348050036791759 [2022-11-18 20:37:12,044 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2269 transitions. [2022-11-18 20:37:12,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2269 transitions. [2022-11-18 20:37:12,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:12,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2269 transitions. [2022-11-18 20:37:12,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 126.05555555555556) internal successors, (2269), 18 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:12,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 151.0) internal successors, (2869), 19 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:12,060 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 151.0) internal successors, (2869), 19 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:12,060 INFO L175 Difference]: Start difference. First operand has 173 places, 147 transitions, 550 flow. Second operand 18 states and 2269 transitions. [2022-11-18 20:37:12,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 454 transitions, 3291 flow [2022-11-18 20:37:12,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 454 transitions, 3290 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:37:12,233 INFO L231 Difference]: Finished difference. Result has 193 places, 159 transitions, 655 flow [2022-11-18 20:37:12,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=655, PETRI_PLACES=193, PETRI_TRANSITIONS=159} [2022-11-18 20:37:12,234 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 64 predicate places. [2022-11-18 20:37:12,235 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 159 transitions, 655 flow [2022-11-18 20:37:12,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 117.83333333333333) internal successors, (1414), 12 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:12,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:12,236 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:12,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:37:12,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:37:12,450 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 20:37:12,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:12,450 INFO L85 PathProgramCache]: Analyzing trace with hash -820304488, now seen corresponding path program 1 times [2022-11-18 20:37:12,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:12,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185449660] [2022-11-18 20:37:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:12,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:12,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:12,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185449660] [2022-11-18 20:37:12,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185449660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:12,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269549480] [2022-11-18 20:37:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:12,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:12,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:12,575 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:12,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8950e593-ccd9-42eb-b0b6-c04f16053ecd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:37:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:12,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:37:12,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:12,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:37:12,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269549480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:12,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:37:12,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:37:12,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978504183] [2022-11-18 20:37:12,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:12,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:37:12,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:37:12,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:37:12,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 151 [2022-11-18 20:37:12,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 159 transitions, 655 flow. Second operand has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:12,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:12,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 151 [2022-11-18 20:37:12,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand