./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a --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 b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- 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-b5237d8 [2022-11-21 09:03:10,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:03:10,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:03:10,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:03:10,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:03:10,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:03:10,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:03:10,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:03:10,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:03:10,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:03:10,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:03:10,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:03:10,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:03:10,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:03:10,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:03:10,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:03:10,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:03:10,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:03:10,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:03:10,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:03:10,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:03:10,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:03:10,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:03:10,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:03:10,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:03:10,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:03:10,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:03:10,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:03:10,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:03:10,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:03:10,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:03:10,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:03:10,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:03:10,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:03:10,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:03:10,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:03:10,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:03:10,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:03:10,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:03:10,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:03:10,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:03:10,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 09:03:10,311 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:03:10,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:03:10,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:03:10,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:03:10,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:03:10,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:03:10,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:03:10,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:03:10,317 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:03:10,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:03:10,319 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:03:10,320 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:03:10,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:03:10,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:03:10,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:03:10,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:03:10,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:03:10,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:03:10,322 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 09:03:10,323 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:03:10,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:03:10,324 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:03:10,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:03:10,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:03:10,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:03:10,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:03:10,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:03:10,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:03:10,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:03:10,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:03:10,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:03:10,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:03:10,329 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:03:10,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:03:10,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:03:10,331 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_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2022-11-21 09:03:10,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:03:10,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:03:10,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:03:10,666 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:03:10,667 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:03:10,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-21 09:03:14,519 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:03:14,845 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:03:14,846 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-21 09:03:14,856 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/data/7330c33fd/92903966ef734f64ba23fcde3f8c4e59/FLAG24287bcfc [2022-11-21 09:03:14,874 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/data/7330c33fd/92903966ef734f64ba23fcde3f8c4e59 [2022-11-21 09:03:14,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:03:14,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:03:14,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:03:14,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:03:14,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:03:14,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:14" (1/1) ... [2022-11-21 09:03:14,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2845350d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:14, skipping insertion in model container [2022-11-21 09:03:14,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:14" (1/1) ... [2022-11-21 09:03:14,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:03:14,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:03:15,201 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-21 09:03:15,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:03:15,223 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:03:15,270 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-21 09:03:15,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:03:15,295 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:03:15,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15 WrapperNode [2022-11-21 09:03:15,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:03:15,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:03:15,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:03:15,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:03:15,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15" (1/1) ... [2022-11-21 09:03:15,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15" (1/1) ... [2022-11-21 09:03:15,368 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 478 [2022-11-21 09:03:15,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:03:15,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:03:15,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:03:15,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:03:15,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15" (1/1) ... [2022-11-21 09:03:15,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15" (1/1) ... [2022-11-21 09:03:15,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15" (1/1) ... [2022-11-21 09:03:15,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15" (1/1) ... [2022-11-21 09:03:15,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15" (1/1) ... [2022-11-21 09:03:15,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15" (1/1) ... [2022-11-21 09:03:15,466 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15" (1/1) ... [2022-11-21 09:03:15,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15" (1/1) ... [2022-11-21 09:03:15,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:03:15,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:03:15,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:03:15,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:03:15,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15" (1/1) ... [2022-11-21 09:03:15,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:03:15,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:03:15,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:03:15,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:03:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:03:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:03:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:03:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 09:03:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 09:03:15,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 09:03:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 09:03:15,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 09:03:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:03:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 09:03:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:03:15,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:03:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:03:15,596 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 09:03:15,752 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:03:15,755 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:03:17,205 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:03:17,233 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:03:17,234 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 09:03:17,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:17 BoogieIcfgContainer [2022-11-21 09:03:17,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:03:17,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:03:17,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:03:17,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:03:17,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:03:14" (1/3) ... [2022-11-21 09:03:17,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a7396b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:17, skipping insertion in model container [2022-11-21 09:03:17,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:15" (2/3) ... [2022-11-21 09:03:17,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a7396b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:17, skipping insertion in model container [2022-11-21 09:03:17,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:17" (3/3) ... [2022-11-21 09:03:17,258 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-11-21 09:03:17,271 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 09:03:17,285 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:03:17,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-21 09:03:17,286 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 09:03:17,547 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 09:03:17,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 605 places, 659 transitions, 1334 flow [2022-11-21 09:03:18,197 INFO L130 PetriNetUnfolder]: 61/657 cut-off events. [2022-11-21 09:03:18,198 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 09:03:18,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 657 events. 61/657 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2386 event pairs, 0 based on Foata normal form. 0/554 useless extension candidates. Maximal degree in co-relation 485. Up to 2 conditions per place. [2022-11-21 09:03:18,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 605 places, 659 transitions, 1334 flow [2022-11-21 09:03:18,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 586 places, 639 transitions, 1290 flow [2022-11-21 09:03:18,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:03:18,283 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;@6abec5d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:03:18,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-11-21 09:03:18,302 INFO L130 PetriNetUnfolder]: 3/94 cut-off events. [2022-11-21 09:03:18,302 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 09:03:18,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:18,304 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:18,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:18,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:18,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1317612097, now seen corresponding path program 1 times [2022-11-21 09:03:18,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:18,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48664447] [2022-11-21 09:03:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:18,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:19,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:19,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48664447] [2022-11-21 09:03:19,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48664447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:19,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:19,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:19,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302662902] [2022-11-21 09:03:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:19,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:19,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:19,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:19,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:19,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 659 [2022-11-21 09:03:19,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 639 transitions, 1290 flow. Second operand has 4 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:19,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:19,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 659 [2022-11-21 09:03:19,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:19,857 INFO L130 PetriNetUnfolder]: 71/1120 cut-off events. [2022-11-21 09:03:19,857 INFO L131 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-11-21 09:03:19,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 1120 events. 71/1120 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6226 event pairs, 0 based on Foata normal form. 54/990 useless extension candidates. Maximal degree in co-relation 691. Up to 30 conditions per place. [2022-11-21 09:03:19,898 INFO L137 encePairwiseOnDemand]: 620/659 looper letters, 38 selfloop transitions, 9 changer transitions 8/634 dead transitions. [2022-11-21 09:03:19,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 634 transitions, 1390 flow [2022-11-21 09:03:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:03:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:03:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3116 transitions. [2022-11-21 09:03:19,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456752655538695 [2022-11-21 09:03:19,941 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3116 transitions. [2022-11-21 09:03:19,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3116 transitions. [2022-11-21 09:03:19,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:19,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3116 transitions. [2022-11-21 09:03:19,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:19,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:19,989 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:19,991 INFO L175 Difference]: Start difference. First operand has 586 places, 639 transitions, 1290 flow. Second operand 5 states and 3116 transitions. [2022-11-21 09:03:19,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 634 transitions, 1390 flow [2022-11-21 09:03:20,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 634 transitions, 1374 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 09:03:20,014 INFO L231 Difference]: Finished difference. Result has 587 places, 613 transitions, 1282 flow [2022-11-21 09:03:20,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1282, PETRI_PLACES=587, PETRI_TRANSITIONS=613} [2022-11-21 09:03:20,028 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 1 predicate places. [2022-11-21 09:03:20,028 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 613 transitions, 1282 flow [2022-11-21 09:03:20,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:20,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:20,032 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:20,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:03:20,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:20,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:20,034 INFO L85 PathProgramCache]: Analyzing trace with hash 271165569, now seen corresponding path program 1 times [2022-11-21 09:03:20,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:20,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890817473] [2022-11-21 09:03:20,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:20,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:20,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:20,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890817473] [2022-11-21 09:03:20,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890817473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:03:20,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679541123] [2022-11-21 09:03:20,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:20,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:03:20,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:03:20,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:03:20,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 09:03:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:20,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:03:20,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:20,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:03:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:20,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679541123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:03:20,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:03:20,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 09:03:20,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892385098] [2022-11-21 09:03:20,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:03:20,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 09:03:20,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:20,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:03:20,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:03:20,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 659 [2022-11-21 09:03:20,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 613 transitions, 1282 flow. Second operand has 12 states, 12 states have (on average 605.6666666666666) internal successors, (7268), 12 states have internal predecessors, (7268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:20,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:20,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 659 [2022-11-21 09:03:20,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:22,622 INFO L130 PetriNetUnfolder]: 176/2626 cut-off events. [2022-11-21 09:03:22,622 INFO L131 PetriNetUnfolder]: For 32/37 co-relation queries the response was YES. [2022-11-21 09:03:22,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 2626 events. 176/2626 cut-off events. For 32/37 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 20230 event pairs, 0 based on Foata normal form. 6/2192 useless extension candidates. Maximal degree in co-relation 2020. Up to 22 conditions per place. [2022-11-21 09:03:22,730 INFO L137 encePairwiseOnDemand]: 644/659 looper letters, 71 selfloop transitions, 40 changer transitions 0/690 dead transitions. [2022-11-21 09:03:22,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 690 transitions, 1720 flow [2022-11-21 09:03:22,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 09:03:22,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 09:03:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 10971 transitions. [2022-11-21 09:03:22,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.924886191198786 [2022-11-21 09:03:22,756 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 10971 transitions. [2022-11-21 09:03:22,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 10971 transitions. [2022-11-21 09:03:22,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:22,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 10971 transitions. [2022-11-21 09:03:22,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 609.5) internal successors, (10971), 18 states have internal predecessors, (10971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:22,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 659.0) internal successors, (12521), 19 states have internal predecessors, (12521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:22,836 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 659.0) internal successors, (12521), 19 states have internal predecessors, (12521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:22,836 INFO L175 Difference]: Start difference. First operand has 587 places, 613 transitions, 1282 flow. Second operand 18 states and 10971 transitions. [2022-11-21 09:03:22,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 690 transitions, 1720 flow [2022-11-21 09:03:22,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 690 transitions, 1715 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 09:03:22,854 INFO L231 Difference]: Finished difference. Result has 600 places, 640 transitions, 1515 flow [2022-11-21 09:03:22,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1515, PETRI_PLACES=600, PETRI_TRANSITIONS=640} [2022-11-21 09:03:22,856 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 14 predicate places. [2022-11-21 09:03:22,857 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 640 transitions, 1515 flow [2022-11-21 09:03:22,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 605.6666666666666) internal successors, (7268), 12 states have internal predecessors, (7268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:22,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:22,884 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:22,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 09:03:23,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:03:23,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:23,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:23,092 INFO L85 PathProgramCache]: Analyzing trace with hash -183800829, now seen corresponding path program 1 times [2022-11-21 09:03:23,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:23,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92681093] [2022-11-21 09:03:23,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:23,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:23,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:23,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92681093] [2022-11-21 09:03:23,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92681093] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:03:23,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9244348] [2022-11-21 09:03:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:23,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:03:23,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:03:23,388 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:03:23,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 09:03:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:23,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:03:23,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:23,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:23,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:23,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9244348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:23,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:03:23,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 09:03:23,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237877602] [2022-11-21 09:03:23,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:23,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:03:23,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:23,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:03:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:03:23,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 659 [2022-11-21 09:03:23,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 640 transitions, 1515 flow. Second operand has 6 states, 6 states have (on average 605.3333333333334) internal successors, (3632), 6 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:23,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:23,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 659 [2022-11-21 09:03:23,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:25,068 INFO L130 PetriNetUnfolder]: 176/2618 cut-off events. [2022-11-21 09:03:25,069 INFO L131 PetriNetUnfolder]: For 126/131 co-relation queries the response was YES. [2022-11-21 09:03:25,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 2618 events. 176/2618 cut-off events. For 126/131 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 20154 event pairs, 0 based on Foata normal form. 8/2186 useless extension candidates. Maximal degree in co-relation 2249. Up to 44 conditions per place. [2022-11-21 09:03:25,150 INFO L137 encePairwiseOnDemand]: 648/659 looper letters, 39 selfloop transitions, 27 changer transitions 0/645 dead transitions. [2022-11-21 09:03:25,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 645 transitions, 1626 flow [2022-11-21 09:03:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:03:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:03:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4268 transitions. [2022-11-21 09:03:25,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9252113592022545 [2022-11-21 09:03:25,162 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4268 transitions. [2022-11-21 09:03:25,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4268 transitions. [2022-11-21 09:03:25,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:25,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4268 transitions. [2022-11-21 09:03:25,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 609.7142857142857) internal successors, (4268), 7 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:25,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:25,187 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:25,188 INFO L175 Difference]: Start difference. First operand has 600 places, 640 transitions, 1515 flow. Second operand 7 states and 4268 transitions. [2022-11-21 09:03:25,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 645 transitions, 1626 flow [2022-11-21 09:03:25,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 645 transitions, 1552 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-21 09:03:25,208 INFO L231 Difference]: Finished difference. Result has 595 places, 632 transitions, 1441 flow [2022-11-21 09:03:25,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1441, PETRI_PLACES=595, PETRI_TRANSITIONS=632} [2022-11-21 09:03:25,211 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 9 predicate places. [2022-11-21 09:03:25,211 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 632 transitions, 1441 flow [2022-11-21 09:03:25,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 605.3333333333334) internal successors, (3632), 6 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:25,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:25,214 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:25,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 09:03:25,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:03:25,421 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:25,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:25,422 INFO L85 PathProgramCache]: Analyzing trace with hash 63362247, now seen corresponding path program 2 times [2022-11-21 09:03:25,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:25,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933843864] [2022-11-21 09:03:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:25,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:25,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:25,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933843864] [2022-11-21 09:03:25,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933843864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:03:25,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297301638] [2022-11-21 09:03:25,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:03:25,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:03:25,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:03:25,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:03:25,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 09:03:25,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 09:03:25,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:03:25,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:03:25,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-21 09:03:26,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:03:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-21 09:03:26,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297301638] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:03:26,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:03:26,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-21 09:03:26,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331632655] [2022-11-21 09:03:26,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:03:26,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 09:03:26,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:26,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 09:03:26,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:03:26,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 659 [2022-11-21 09:03:26,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 632 transitions, 1441 flow. Second operand has 18 states, 18 states have (on average 598.8333333333334) internal successors, (10779), 18 states have internal predecessors, (10779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:26,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:26,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 659 [2022-11-21 09:03:26,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:28,630 INFO L130 PetriNetUnfolder]: 211/3108 cut-off events. [2022-11-21 09:03:28,631 INFO L131 PetriNetUnfolder]: For 114/120 co-relation queries the response was YES. [2022-11-21 09:03:28,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3342 conditions, 3108 events. 211/3108 cut-off events. For 114/120 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 25045 event pairs, 0 based on Foata normal form. 2/2582 useless extension candidates. Maximal degree in co-relation 2514. Up to 14 conditions per place. [2022-11-21 09:03:28,748 INFO L137 encePairwiseOnDemand]: 643/659 looper letters, 81 selfloop transitions, 43 changer transitions 0/695 dead transitions. [2022-11-21 09:03:28,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 695 transitions, 1840 flow [2022-11-21 09:03:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 09:03:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 09:03:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 12026 transitions. [2022-11-21 09:03:28,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9124430955993931 [2022-11-21 09:03:28,778 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 12026 transitions. [2022-11-21 09:03:28,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 12026 transitions. [2022-11-21 09:03:28,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:28,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 12026 transitions. [2022-11-21 09:03:28,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 601.3) internal successors, (12026), 20 states have internal predecessors, (12026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:28,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:28,849 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:28,849 INFO L175 Difference]: Start difference. First operand has 595 places, 632 transitions, 1441 flow. Second operand 20 states and 12026 transitions. [2022-11-21 09:03:28,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 695 transitions, 1840 flow [2022-11-21 09:03:28,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 695 transitions, 1787 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-21 09:03:28,868 INFO L231 Difference]: Finished difference. Result has 604 places, 635 transitions, 1487 flow [2022-11-21 09:03:28,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1487, PETRI_PLACES=604, PETRI_TRANSITIONS=635} [2022-11-21 09:03:28,870 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 18 predicate places. [2022-11-21 09:03:28,871 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 635 transitions, 1487 flow [2022-11-21 09:03:28,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 598.8333333333334) internal successors, (10779), 18 states have internal predecessors, (10779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:28,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:28,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:28,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 09:03:29,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:03:29,083 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:29,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:29,084 INFO L85 PathProgramCache]: Analyzing trace with hash -293264205, now seen corresponding path program 1 times [2022-11-21 09:03:29,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:29,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913616730] [2022-11-21 09:03:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:29,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:29,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:29,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913616730] [2022-11-21 09:03:29,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913616730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:29,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:29,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:03:29,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183452921] [2022-11-21 09:03:29,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:29,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:03:29,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:03:29,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:03:29,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 605 out of 659 [2022-11-21 09:03:29,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 635 transitions, 1487 flow. Second operand has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:29,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:29,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 605 of 659 [2022-11-21 09:03:29,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:30,369 INFO L130 PetriNetUnfolder]: 176/2620 cut-off events. [2022-11-21 09:03:30,370 INFO L131 PetriNetUnfolder]: For 148/153 co-relation queries the response was YES. [2022-11-21 09:03:30,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2838 conditions, 2620 events. 176/2620 cut-off events. For 148/153 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 20022 event pairs, 0 based on Foata normal form. 2/2192 useless extension candidates. Maximal degree in co-relation 503. Up to 72 conditions per place. [2022-11-21 09:03:30,562 INFO L137 encePairwiseOnDemand]: 649/659 looper letters, 39 selfloop transitions, 12 changer transitions 0/638 dead transitions. [2022-11-21 09:03:30,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 638 transitions, 1594 flow [2022-11-21 09:03:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:03:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:03:30,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3060 transitions. [2022-11-21 09:03:30,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.928679817905918 [2022-11-21 09:03:30,583 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3060 transitions. [2022-11-21 09:03:30,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3060 transitions. [2022-11-21 09:03:30,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:30,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3060 transitions. [2022-11-21 09:03:30,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 612.0) internal successors, (3060), 5 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:30,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:30,610 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:30,610 INFO L175 Difference]: Start difference. First operand has 604 places, 635 transitions, 1487 flow. Second operand 5 states and 3060 transitions. [2022-11-21 09:03:30,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 638 transitions, 1594 flow [2022-11-21 09:03:30,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 638 transitions, 1503 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-11-21 09:03:30,630 INFO L231 Difference]: Finished difference. Result has 594 places, 634 transitions, 1421 flow [2022-11-21 09:03:30,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1421, PETRI_PLACES=594, PETRI_TRANSITIONS=634} [2022-11-21 09:03:30,635 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 8 predicate places. [2022-11-21 09:03:30,636 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 634 transitions, 1421 flow [2022-11-21 09:03:30,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:30,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:30,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:30,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:03:30,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:30,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash 359988901, now seen corresponding path program 1 times [2022-11-21 09:03:30,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:30,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40919138] [2022-11-21 09:03:30,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:30,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:03:30,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:30,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40919138] [2022-11-21 09:03:30,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40919138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:03:30,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613569699] [2022-11-21 09:03:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:30,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:03:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:03:30,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:03:30,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 09:03:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:31,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 09:03:31,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:03:31,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:03:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:03:31,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613569699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:03:31,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:03:31,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-21 09:03:31,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112166534] [2022-11-21 09:03:31,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:03:31,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 09:03:31,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:31,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 09:03:31,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-21 09:03:31,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 659 [2022-11-21 09:03:31,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 634 transitions, 1421 flow. Second operand has 15 states, 15 states have (on average 598.4666666666667) internal successors, (8977), 15 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:31,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:31,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 659 [2022-11-21 09:03:31,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:32,558 INFO L130 PetriNetUnfolder]: 106/1644 cut-off events. [2022-11-21 09:03:32,558 INFO L131 PetriNetUnfolder]: For 44/47 co-relation queries the response was YES. [2022-11-21 09:03:32,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 1644 events. 106/1644 cut-off events. For 44/47 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10461 event pairs, 0 based on Foata normal form. 4/1390 useless extension candidates. Maximal degree in co-relation 1547. Up to 36 conditions per place. [2022-11-21 09:03:32,621 INFO L137 encePairwiseOnDemand]: 643/659 looper letters, 49 selfloop transitions, 30 changer transitions 0/650 dead transitions. [2022-11-21 09:03:32,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 650 transitions, 1621 flow [2022-11-21 09:03:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 09:03:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 09:03:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6610 transitions. [2022-11-21 09:03:32,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9118499103324597 [2022-11-21 09:03:32,645 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 6610 transitions. [2022-11-21 09:03:32,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 6610 transitions. [2022-11-21 09:03:32,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:32,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 6610 transitions. [2022-11-21 09:03:32,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 600.9090909090909) internal successors, (6610), 11 states have internal predecessors, (6610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:32,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 659.0) internal successors, (7908), 12 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:32,689 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 659.0) internal successors, (7908), 12 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:32,689 INFO L175 Difference]: Start difference. First operand has 594 places, 634 transitions, 1421 flow. Second operand 11 states and 6610 transitions. [2022-11-21 09:03:32,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 650 transitions, 1621 flow [2022-11-21 09:03:32,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 650 transitions, 1601 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 09:03:32,712 INFO L231 Difference]: Finished difference. Result has 603 places, 634 transitions, 1500 flow [2022-11-21 09:03:32,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1500, PETRI_PLACES=603, PETRI_TRANSITIONS=634} [2022-11-21 09:03:32,715 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 17 predicate places. [2022-11-21 09:03:32,715 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 634 transitions, 1500 flow [2022-11-21 09:03:32,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 598.4666666666667) internal successors, (8977), 15 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:32,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:32,720 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:32,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 09:03:32,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:03:32,930 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:32,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:32,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1299232631, now seen corresponding path program 2 times [2022-11-21 09:03:32,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:32,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584245082] [2022-11-21 09:03:32,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:32,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-21 09:03:33,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:33,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584245082] [2022-11-21 09:03:33,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584245082] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:03:33,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128113382] [2022-11-21 09:03:33,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:03:33,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:03:33,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:03:33,523 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:03:33,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 09:03:33,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 09:03:33,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:03:33,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:03:33,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-21 09:03:34,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:34,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128113382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:34,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:03:34,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-21 09:03:34,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696498321] [2022-11-21 09:03:34,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:34,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:03:34,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:34,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:03:34,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-21 09:03:34,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:34,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 634 transitions, 1500 flow. Second operand has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:34,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:34,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:34,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:36,113 INFO L130 PetriNetUnfolder]: 532/4842 cut-off events. [2022-11-21 09:03:36,113 INFO L131 PetriNetUnfolder]: For 106/109 co-relation queries the response was YES. [2022-11-21 09:03:36,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5816 conditions, 4842 events. 532/4842 cut-off events. For 106/109 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 48355 event pairs, 87 based on Foata normal form. 0/4035 useless extension candidates. Maximal degree in co-relation 1833. Up to 252 conditions per place. [2022-11-21 09:03:36,215 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 54 selfloop transitions, 7 changer transitions 0/646 dead transitions. [2022-11-21 09:03:36,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 646 transitions, 1651 flow [2022-11-21 09:03:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:03:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:03:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4129 transitions. [2022-11-21 09:03:36,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8950791242141773 [2022-11-21 09:03:36,226 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4129 transitions. [2022-11-21 09:03:36,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4129 transitions. [2022-11-21 09:03:36,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:36,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4129 transitions. [2022-11-21 09:03:36,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.8571428571429) internal successors, (4129), 7 states have internal predecessors, (4129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:36,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:36,249 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:36,249 INFO L175 Difference]: Start difference. First operand has 603 places, 634 transitions, 1500 flow. Second operand 7 states and 4129 transitions. [2022-11-21 09:03:36,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 646 transitions, 1651 flow [2022-11-21 09:03:36,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 646 transitions, 1604 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-21 09:03:36,265 INFO L231 Difference]: Finished difference. Result has 599 places, 633 transitions, 1465 flow [2022-11-21 09:03:36,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1465, PETRI_PLACES=599, PETRI_TRANSITIONS=633} [2022-11-21 09:03:36,268 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 13 predicate places. [2022-11-21 09:03:36,268 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 633 transitions, 1465 flow [2022-11-21 09:03:36,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:36,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:36,270 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:36,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 09:03:36,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 09:03:36,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:36,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:36,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1621504219, now seen corresponding path program 1 times [2022-11-21 09:03:36,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:36,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201711396] [2022-11-21 09:03:36,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:36,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-21 09:03:36,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:36,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201711396] [2022-11-21 09:03:36,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201711396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:36,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:36,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:36,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511743287] [2022-11-21 09:03:36,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:36,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:36,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:36,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:36,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:36,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:36,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 633 transitions, 1465 flow. Second operand has 4 states, 4 states have (on average 582.75) internal successors, (2331), 4 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:36,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:36,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:36,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:38,770 INFO L130 PetriNetUnfolder]: 505/5493 cut-off events. [2022-11-21 09:03:38,771 INFO L131 PetriNetUnfolder]: For 91/94 co-relation queries the response was YES. [2022-11-21 09:03:38,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6441 conditions, 5493 events. 505/5493 cut-off events. For 91/94 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 56035 event pairs, 90 based on Foata normal form. 12/4611 useless extension candidates. Maximal degree in co-relation 3716. Up to 295 conditions per place. [2022-11-21 09:03:38,896 INFO L137 encePairwiseOnDemand]: 647/659 looper letters, 59 selfloop transitions, 8 changer transitions 0/652 dead transitions. [2022-11-21 09:03:38,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 652 transitions, 1638 flow [2022-11-21 09:03:38,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:03:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 09:03:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2395 transitions. [2022-11-21 09:03:38,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9085735963581184 [2022-11-21 09:03:38,905 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2395 transitions. [2022-11-21 09:03:38,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2395 transitions. [2022-11-21 09:03:38,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:38,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2395 transitions. [2022-11-21 09:03:38,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 598.75) internal successors, (2395), 4 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:38,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:38,923 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:38,923 INFO L175 Difference]: Start difference. First operand has 599 places, 633 transitions, 1465 flow. Second operand 4 states and 2395 transitions. [2022-11-21 09:03:38,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 652 transitions, 1638 flow [2022-11-21 09:03:38,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 652 transitions, 1628 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 09:03:38,943 INFO L231 Difference]: Finished difference. Result has 599 places, 635 transitions, 1501 flow [2022-11-21 09:03:38,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1501, PETRI_PLACES=599, PETRI_TRANSITIONS=635} [2022-11-21 09:03:38,949 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 13 predicate places. [2022-11-21 09:03:38,949 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 635 transitions, 1501 flow [2022-11-21 09:03:38,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 582.75) internal successors, (2331), 4 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:38,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:38,951 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:38,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 09:03:38,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:38,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:38,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1565375734, now seen corresponding path program 1 times [2022-11-21 09:03:38,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:38,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610319074] [2022-11-21 09:03:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:38,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-21 09:03:39,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:39,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610319074] [2022-11-21 09:03:39,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610319074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:03:39,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783238958] [2022-11-21 09:03:39,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:39,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:03:39,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:03:39,338 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:03:39,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 09:03:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:39,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 09:03:39,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-21 09:03:39,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:03:40,074 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-21 09:03:40,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783238958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:03:40,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:03:40,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-21 09:03:40,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554375914] [2022-11-21 09:03:40,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:03:40,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 09:03:40,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:40,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 09:03:40,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-21 09:03:40,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 659 [2022-11-21 09:03:40,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 635 transitions, 1501 flow. Second operand has 22 states, 22 states have (on average 598.6818181818181) internal successors, (13171), 22 states have internal predecessors, (13171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:40,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:40,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 659 [2022-11-21 09:03:40,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:40,957 INFO L130 PetriNetUnfolder]: 34/776 cut-off events. [2022-11-21 09:03:40,957 INFO L131 PetriNetUnfolder]: For 80/85 co-relation queries the response was YES. [2022-11-21 09:03:40,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 776 events. 34/776 cut-off events. For 80/85 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3097 event pairs, 0 based on Foata normal form. 4/688 useless extension candidates. Maximal degree in co-relation 859. Up to 20 conditions per place. [2022-11-21 09:03:40,985 INFO L137 encePairwiseOnDemand]: 643/659 looper letters, 55 selfloop transitions, 34 changer transitions 0/661 dead transitions. [2022-11-21 09:03:40,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 661 transitions, 1753 flow [2022-11-21 09:03:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 09:03:40,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 09:03:41,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 10208 transitions. [2022-11-21 09:03:41,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.911184504150674 [2022-11-21 09:03:41,014 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 10208 transitions. [2022-11-21 09:03:41,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 10208 transitions. [2022-11-21 09:03:41,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:41,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 10208 transitions. [2022-11-21 09:03:41,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 600.4705882352941) internal successors, (10208), 17 states have internal predecessors, (10208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:41,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 659.0) internal successors, (11862), 18 states have internal predecessors, (11862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:41,070 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 659.0) internal successors, (11862), 18 states have internal predecessors, (11862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:41,070 INFO L175 Difference]: Start difference. First operand has 599 places, 635 transitions, 1501 flow. Second operand 17 states and 10208 transitions. [2022-11-21 09:03:41,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 661 transitions, 1753 flow [2022-11-21 09:03:41,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 661 transitions, 1753 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 09:03:41,088 INFO L231 Difference]: Finished difference. Result has 617 places, 633 transitions, 1575 flow [2022-11-21 09:03:41,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1575, PETRI_PLACES=617, PETRI_TRANSITIONS=633} [2022-11-21 09:03:41,091 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 31 predicate places. [2022-11-21 09:03:41,092 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 633 transitions, 1575 flow [2022-11-21 09:03:41,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 598.6818181818181) internal successors, (13171), 22 states have internal predecessors, (13171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:41,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:41,099 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:41,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 09:03:41,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:03:41,308 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:41,308 INFO L85 PathProgramCache]: Analyzing trace with hash 422140398, now seen corresponding path program 2 times [2022-11-21 09:03:41,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:41,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199544461] [2022-11-21 09:03:41,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:41,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:41,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:41,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199544461] [2022-11-21 09:03:41,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199544461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:41,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:41,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:03:41,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510831719] [2022-11-21 09:03:41,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:41,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:03:41,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:41,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:03:41,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:03:41,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:41,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 633 transitions, 1575 flow. Second operand has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:41,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:41,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:41,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:42,491 INFO L130 PetriNetUnfolder]: 309/1940 cut-off events. [2022-11-21 09:03:42,491 INFO L131 PetriNetUnfolder]: For 316/321 co-relation queries the response was YES. [2022-11-21 09:03:42,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1940 events. 309/1940 cut-off events. For 316/321 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16553 event pairs, 85 based on Foata normal form. 0/1558 useless extension candidates. Maximal degree in co-relation 2351. Up to 210 conditions per place. [2022-11-21 09:03:42,527 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 52 selfloop transitions, 7 changer transitions 0/643 dead transitions. [2022-11-21 09:03:42,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 643 transitions, 1716 flow [2022-11-21 09:03:42,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:03:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:03:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4127 transitions. [2022-11-21 09:03:42,546 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946455668762194 [2022-11-21 09:03:42,547 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4127 transitions. [2022-11-21 09:03:42,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4127 transitions. [2022-11-21 09:03:42,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:42,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4127 transitions. [2022-11-21 09:03:42,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.5714285714286) internal successors, (4127), 7 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:42,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:42,585 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:42,585 INFO L175 Difference]: Start difference. First operand has 617 places, 633 transitions, 1575 flow. Second operand 7 states and 4127 transitions. [2022-11-21 09:03:42,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 643 transitions, 1716 flow [2022-11-21 09:03:42,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 643 transitions, 1648 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-21 09:03:42,602 INFO L231 Difference]: Finished difference. Result has 606 places, 632 transitions, 1519 flow [2022-11-21 09:03:42,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1519, PETRI_PLACES=606, PETRI_TRANSITIONS=632} [2022-11-21 09:03:42,605 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 20 predicate places. [2022-11-21 09:03:42,606 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 632 transitions, 1519 flow [2022-11-21 09:03:42,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:42,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:42,608 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:42,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 09:03:42,609 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:42,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:42,610 INFO L85 PathProgramCache]: Analyzing trace with hash 201452365, now seen corresponding path program 1 times [2022-11-21 09:03:42,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:42,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978239091] [2022-11-21 09:03:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:42,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:42,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:42,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978239091] [2022-11-21 09:03:42,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978239091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:42,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:42,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:42,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759216070] [2022-11-21 09:03:42,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:42,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:42,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:42,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:42,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 632 transitions, 1519 flow. Second operand has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:42,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:42,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:42,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:43,869 INFO L130 PetriNetUnfolder]: 362/2138 cut-off events. [2022-11-21 09:03:43,869 INFO L131 PetriNetUnfolder]: For 403/408 co-relation queries the response was YES. [2022-11-21 09:03:43,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3022 conditions, 2138 events. 362/2138 cut-off events. For 403/408 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 19618 event pairs, 150 based on Foata normal form. 12/1659 useless extension candidates. Maximal degree in co-relation 2714. Up to 344 conditions per place. [2022-11-21 09:03:43,915 INFO L137 encePairwiseOnDemand]: 647/659 looper letters, 58 selfloop transitions, 8 changer transitions 0/650 dead transitions. [2022-11-21 09:03:43,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 650 transitions, 1687 flow [2022-11-21 09:03:43,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:03:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 09:03:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2394 transitions. [2022-11-21 09:03:43,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9081942336874052 [2022-11-21 09:03:43,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2394 transitions. [2022-11-21 09:03:43,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2394 transitions. [2022-11-21 09:03:43,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:43,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2394 transitions. [2022-11-21 09:03:43,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 598.5) internal successors, (2394), 4 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:43,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:43,933 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:43,934 INFO L175 Difference]: Start difference. First operand has 606 places, 632 transitions, 1519 flow. Second operand 4 states and 2394 transitions. [2022-11-21 09:03:43,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 650 transitions, 1687 flow [2022-11-21 09:03:43,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 650 transitions, 1677 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 09:03:43,950 INFO L231 Difference]: Finished difference. Result has 606 places, 634 transitions, 1555 flow [2022-11-21 09:03:43,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1555, PETRI_PLACES=606, PETRI_TRANSITIONS=634} [2022-11-21 09:03:43,953 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 20 predicate places. [2022-11-21 09:03:43,953 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 634 transitions, 1555 flow [2022-11-21 09:03:43,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:43,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:43,955 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:43,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 09:03:43,956 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:43,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash -600930570, now seen corresponding path program 1 times [2022-11-21 09:03:43,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:43,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046370642] [2022-11-21 09:03:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:44,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:44,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046370642] [2022-11-21 09:03:44,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046370642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:44,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:44,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:44,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998414370] [2022-11-21 09:03:44,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:44,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:44,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:44,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:44,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 634 transitions, 1555 flow. Second operand has 4 states, 4 states have (on average 583.25) internal successors, (2333), 4 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:44,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:44,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:44,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:45,042 INFO L130 PetriNetUnfolder]: 153/2434 cut-off events. [2022-11-21 09:03:45,042 INFO L131 PetriNetUnfolder]: For 139/140 co-relation queries the response was YES. [2022-11-21 09:03:45,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 2434 events. 153/2434 cut-off events. For 139/140 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 19421 event pairs, 24 based on Foata normal form. 4/2116 useless extension candidates. Maximal degree in co-relation 2677. Up to 95 conditions per place. [2022-11-21 09:03:45,164 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 59 selfloop transitions, 6 changer transitions 0/649 dead transitions. [2022-11-21 09:03:45,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 649 transitions, 1710 flow [2022-11-21 09:03:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:03:45,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 09:03:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2391 transitions. [2022-11-21 09:03:45,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070561456752656 [2022-11-21 09:03:45,170 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2391 transitions. [2022-11-21 09:03:45,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2391 transitions. [2022-11-21 09:03:45,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:45,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2391 transitions. [2022-11-21 09:03:45,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 597.75) internal successors, (2391), 4 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:45,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:45,187 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:45,187 INFO L175 Difference]: Start difference. First operand has 606 places, 634 transitions, 1555 flow. Second operand 4 states and 2391 transitions. [2022-11-21 09:03:45,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 649 transitions, 1710 flow [2022-11-21 09:03:45,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 649 transitions, 1706 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 09:03:45,208 INFO L231 Difference]: Finished difference. Result has 608 places, 632 transitions, 1551 flow [2022-11-21 09:03:45,209 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1551, PETRI_PLACES=608, PETRI_TRANSITIONS=632} [2022-11-21 09:03:45,210 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 22 predicate places. [2022-11-21 09:03:45,210 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 632 transitions, 1551 flow [2022-11-21 09:03:45,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.25) internal successors, (2333), 4 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:45,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:45,212 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:45,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 09:03:45,213 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:45,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:45,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1288579348, now seen corresponding path program 1 times [2022-11-21 09:03:45,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:45,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954266055] [2022-11-21 09:03:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:45,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:45,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:45,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954266055] [2022-11-21 09:03:45,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954266055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:45,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:45,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:03:45,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698654511] [2022-11-21 09:03:45,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:45,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:03:45,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:45,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:03:45,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:03:45,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:45,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 632 transitions, 1551 flow. Second operand has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:45,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:45,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:45,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:46,659 INFO L130 PetriNetUnfolder]: 196/2450 cut-off events. [2022-11-21 09:03:46,659 INFO L131 PetriNetUnfolder]: For 125/126 co-relation queries the response was YES. [2022-11-21 09:03:46,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 2450 events. 196/2450 cut-off events. For 125/126 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 21747 event pairs, 43 based on Foata normal form. 0/2132 useless extension candidates. Maximal degree in co-relation 2811. Up to 144 conditions per place. [2022-11-21 09:03:46,703 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/644 dead transitions. [2022-11-21 09:03:46,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 644 transitions, 1696 flow [2022-11-21 09:03:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:03:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:03:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4126 transitions. [2022-11-21 09:03:46,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8944287882072404 [2022-11-21 09:03:46,716 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4126 transitions. [2022-11-21 09:03:46,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4126 transitions. [2022-11-21 09:03:46,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:46,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4126 transitions. [2022-11-21 09:03:46,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.4285714285714) internal successors, (4126), 7 states have internal predecessors, (4126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:46,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:46,743 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:46,743 INFO L175 Difference]: Start difference. First operand has 608 places, 632 transitions, 1551 flow. Second operand 7 states and 4126 transitions. [2022-11-21 09:03:46,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 644 transitions, 1696 flow [2022-11-21 09:03:46,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 644 transitions, 1686 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:03:46,764 INFO L231 Difference]: Finished difference. Result has 611 places, 631 transitions, 1551 flow [2022-11-21 09:03:46,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1551, PETRI_PLACES=611, PETRI_TRANSITIONS=631} [2022-11-21 09:03:46,766 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 25 predicate places. [2022-11-21 09:03:46,766 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 631 transitions, 1551 flow [2022-11-21 09:03:46,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:46,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:46,768 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:46,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 09:03:46,769 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:46,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1448976760, now seen corresponding path program 1 times [2022-11-21 09:03:46,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:46,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953798169] [2022-11-21 09:03:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:46,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:47,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:47,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953798169] [2022-11-21 09:03:47,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953798169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:47,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:47,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:03:47,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019461940] [2022-11-21 09:03:47,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:47,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:03:47,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:47,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:03:47,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:03:47,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:47,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 631 transitions, 1551 flow. Second operand has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:47,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:47,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:47,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:48,129 INFO L130 PetriNetUnfolder]: 194/2445 cut-off events. [2022-11-21 09:03:48,129 INFO L131 PetriNetUnfolder]: For 129/130 co-relation queries the response was YES. [2022-11-21 09:03:48,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 2445 events. 194/2445 cut-off events. For 129/130 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 20547 event pairs, 60 based on Foata normal form. 0/2137 useless extension candidates. Maximal degree in co-relation 2797. Up to 158 conditions per place. [2022-11-21 09:03:48,166 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 45 selfloop transitions, 6 changer transitions 0/637 dead transitions. [2022-11-21 09:03:48,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 637 transitions, 1669 flow [2022-11-21 09:03:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:03:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:03:48,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4119 transitions. [2022-11-21 09:03:48,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8929113375243876 [2022-11-21 09:03:48,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4119 transitions. [2022-11-21 09:03:48,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4119 transitions. [2022-11-21 09:03:48,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:48,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4119 transitions. [2022-11-21 09:03:48,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 588.4285714285714) internal successors, (4119), 7 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:48,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:48,201 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:48,201 INFO L175 Difference]: Start difference. First operand has 611 places, 631 transitions, 1551 flow. Second operand 7 states and 4119 transitions. [2022-11-21 09:03:48,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 637 transitions, 1669 flow [2022-11-21 09:03:48,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 637 transitions, 1659 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 09:03:48,223 INFO L231 Difference]: Finished difference. Result has 612 places, 630 transitions, 1551 flow [2022-11-21 09:03:48,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1551, PETRI_PLACES=612, PETRI_TRANSITIONS=630} [2022-11-21 09:03:48,225 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 26 predicate places. [2022-11-21 09:03:48,225 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 630 transitions, 1551 flow [2022-11-21 09:03:48,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:48,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:48,228 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:48,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 09:03:48,228 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:48,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:48,229 INFO L85 PathProgramCache]: Analyzing trace with hash -85136081, now seen corresponding path program 1 times [2022-11-21 09:03:48,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:48,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538969829] [2022-11-21 09:03:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:48,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:48,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:48,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538969829] [2022-11-21 09:03:48,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538969829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:48,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:48,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:48,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196357296] [2022-11-21 09:03:48,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:48,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:48,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:48,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:48,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:48,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:48,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 630 transitions, 1551 flow. Second operand has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:48,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:48,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:48,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:49,343 INFO L130 PetriNetUnfolder]: 161/2487 cut-off events. [2022-11-21 09:03:49,343 INFO L131 PetriNetUnfolder]: For 106/107 co-relation queries the response was YES. [2022-11-21 09:03:49,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3082 conditions, 2487 events. 161/2487 cut-off events. For 106/107 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 20091 event pairs, 36 based on Foata normal form. 4/2167 useless extension candidates. Maximal degree in co-relation 2772. Up to 116 conditions per place. [2022-11-21 09:03:49,380 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 53 selfloop transitions, 6 changer transitions 0/645 dead transitions. [2022-11-21 09:03:49,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 645 transitions, 1696 flow [2022-11-21 09:03:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:03:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 09:03:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2385 transitions. [2022-11-21 09:03:49,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047799696509864 [2022-11-21 09:03:49,386 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2385 transitions. [2022-11-21 09:03:49,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2385 transitions. [2022-11-21 09:03:49,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:49,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2385 transitions. [2022-11-21 09:03:49,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 596.25) internal successors, (2385), 4 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:49,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:49,399 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:49,399 INFO L175 Difference]: Start difference. First operand has 612 places, 630 transitions, 1551 flow. Second operand 4 states and 2385 transitions. [2022-11-21 09:03:49,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 645 transitions, 1696 flow [2022-11-21 09:03:49,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 645 transitions, 1683 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 09:03:49,419 INFO L231 Difference]: Finished difference. Result has 608 places, 630 transitions, 1554 flow [2022-11-21 09:03:49,421 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1554, PETRI_PLACES=608, PETRI_TRANSITIONS=630} [2022-11-21 09:03:49,422 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 22 predicate places. [2022-11-21 09:03:49,422 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 630 transitions, 1554 flow [2022-11-21 09:03:49,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:49,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:49,423 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:49,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 09:03:49,424 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:49,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:49,425 INFO L85 PathProgramCache]: Analyzing trace with hash 306042144, now seen corresponding path program 1 times [2022-11-21 09:03:49,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:49,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637513268] [2022-11-21 09:03:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:49,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:49,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:49,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637513268] [2022-11-21 09:03:49,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637513268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:49,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:49,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:03:49,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354348045] [2022-11-21 09:03:49,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:49,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:03:49,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:49,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:03:49,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:03:49,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:49,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 630 transitions, 1554 flow. Second operand has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:49,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:49,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:49,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:50,645 INFO L130 PetriNetUnfolder]: 518/3266 cut-off events. [2022-11-21 09:03:50,645 INFO L131 PetriNetUnfolder]: For 604/611 co-relation queries the response was YES. [2022-11-21 09:03:50,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 3266 events. 518/3266 cut-off events. For 604/611 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 34653 event pairs, 161 based on Foata normal form. 0/2632 useless extension candidates. Maximal degree in co-relation 4361. Up to 468 conditions per place. [2022-11-21 09:03:50,687 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/640 dead transitions. [2022-11-21 09:03:50,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 640 transitions, 1693 flow [2022-11-21 09:03:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:03:50,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:03:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4124 transitions. [2022-11-21 09:03:50,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8939952308692825 [2022-11-21 09:03:50,700 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4124 transitions. [2022-11-21 09:03:50,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4124 transitions. [2022-11-21 09:03:50,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:50,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4124 transitions. [2022-11-21 09:03:50,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.1428571428571) internal successors, (4124), 7 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:50,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:50,722 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:50,724 INFO L175 Difference]: Start difference. First operand has 608 places, 630 transitions, 1554 flow. Second operand 7 states and 4124 transitions. [2022-11-21 09:03:50,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 640 transitions, 1693 flow [2022-11-21 09:03:50,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 640 transitions, 1689 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 09:03:50,743 INFO L231 Difference]: Finished difference. Result has 612 places, 629 transitions, 1560 flow [2022-11-21 09:03:50,744 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1560, PETRI_PLACES=612, PETRI_TRANSITIONS=629} [2022-11-21 09:03:50,745 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 26 predicate places. [2022-11-21 09:03:50,745 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 629 transitions, 1560 flow [2022-11-21 09:03:50,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:50,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:50,747 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:50,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 09:03:50,747 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:50,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:50,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1583467774, now seen corresponding path program 1 times [2022-11-21 09:03:50,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:50,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322518560] [2022-11-21 09:03:50,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:50,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:50,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:50,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322518560] [2022-11-21 09:03:50,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322518560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:50,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:50,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:50,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302735944] [2022-11-21 09:03:50,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:50,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:50,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:50,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:50,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:50,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 629 transitions, 1560 flow. Second operand has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:50,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:50,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:50,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:51,945 INFO L130 PetriNetUnfolder]: 500/2879 cut-off events. [2022-11-21 09:03:51,945 INFO L131 PetriNetUnfolder]: For 730/737 co-relation queries the response was YES. [2022-11-21 09:03:51,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 2879 events. 500/2879 cut-off events. For 730/737 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 29673 event pairs, 168 based on Foata normal form. 16/2205 useless extension candidates. Maximal degree in co-relation 3943. Up to 540 conditions per place. [2022-11-21 09:03:51,991 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 57 selfloop transitions, 6 changer transitions 0/643 dead transitions. [2022-11-21 09:03:51,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 643 transitions, 1708 flow [2022-11-21 09:03:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:03:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 09:03:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2389 transitions. [2022-11-21 09:03:51,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9062974203338392 [2022-11-21 09:03:51,996 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2389 transitions. [2022-11-21 09:03:51,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2389 transitions. [2022-11-21 09:03:51,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:51,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2389 transitions. [2022-11-21 09:03:52,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 597.25) internal successors, (2389), 4 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:52,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:52,005 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:52,006 INFO L175 Difference]: Start difference. First operand has 612 places, 629 transitions, 1560 flow. Second operand 4 states and 2389 transitions. [2022-11-21 09:03:52,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 643 transitions, 1708 flow [2022-11-21 09:03:52,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 643 transitions, 1694 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 09:03:52,024 INFO L231 Difference]: Finished difference. Result has 610 places, 627 transitions, 1546 flow [2022-11-21 09:03:52,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1546, PETRI_PLACES=610, PETRI_TRANSITIONS=627} [2022-11-21 09:03:52,026 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 24 predicate places. [2022-11-21 09:03:52,026 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 627 transitions, 1546 flow [2022-11-21 09:03:52,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:52,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:52,028 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:52,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 09:03:52,028 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:52,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:52,029 INFO L85 PathProgramCache]: Analyzing trace with hash 691186199, now seen corresponding path program 1 times [2022-11-21 09:03:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:52,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390431296] [2022-11-21 09:03:52,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:52,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:52,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:52,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390431296] [2022-11-21 09:03:52,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390431296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:52,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:52,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:03:52,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641149842] [2022-11-21 09:03:52,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:52,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:03:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:03:52,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:03:52,354 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-21 09:03:52,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 627 transitions, 1546 flow. Second operand has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:52,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:52,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-21 09:03:52,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:53,262 INFO L130 PetriNetUnfolder]: 203/2223 cut-off events. [2022-11-21 09:03:53,262 INFO L131 PetriNetUnfolder]: For 115/116 co-relation queries the response was YES. [2022-11-21 09:03:53,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3019 conditions, 2223 events. 203/2223 cut-off events. For 115/116 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 18582 event pairs, 41 based on Foata normal form. 0/1975 useless extension candidates. Maximal degree in co-relation 2707. Up to 109 conditions per place. [2022-11-21 09:03:53,292 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 59 selfloop transitions, 12 changer transitions 0/644 dead transitions. [2022-11-21 09:03:53,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 644 transitions, 1730 flow [2022-11-21 09:03:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:03:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:03:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5782 transitions. [2022-11-21 09:03:53,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773899848254931 [2022-11-21 09:03:53,301 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5782 transitions. [2022-11-21 09:03:53,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5782 transitions. [2022-11-21 09:03:53,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:53,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5782 transitions. [2022-11-21 09:03:53,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.2) internal successors, (5782), 10 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:53,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:53,322 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:53,323 INFO L175 Difference]: Start difference. First operand has 610 places, 627 transitions, 1546 flow. Second operand 10 states and 5782 transitions. [2022-11-21 09:03:53,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 644 transitions, 1730 flow [2022-11-21 09:03:53,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 644 transitions, 1720 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:03:53,339 INFO L231 Difference]: Finished difference. Result has 619 places, 628 transitions, 1572 flow [2022-11-21 09:03:53,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1572, PETRI_PLACES=619, PETRI_TRANSITIONS=628} [2022-11-21 09:03:53,341 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 33 predicate places. [2022-11-21 09:03:53,341 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 628 transitions, 1572 flow [2022-11-21 09:03:53,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:53,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:53,343 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:53,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 09:03:53,343 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:53,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1842858775, now seen corresponding path program 1 times [2022-11-21 09:03:53,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:53,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525601881] [2022-11-21 09:03:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:53,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:53,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:53,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525601881] [2022-11-21 09:03:53,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525601881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:53,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:53,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:03:53,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725557438] [2022-11-21 09:03:53,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:53,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:03:53,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:53,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:03:53,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:03:53,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:53,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 628 transitions, 1572 flow. Second operand has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:53,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:53,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:53,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:54,687 INFO L130 PetriNetUnfolder]: 492/3229 cut-off events. [2022-11-21 09:03:54,688 INFO L131 PetriNetUnfolder]: For 588/613 co-relation queries the response was YES. [2022-11-21 09:03:54,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4662 conditions, 3229 events. 492/3229 cut-off events. For 588/613 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 33354 event pairs, 225 based on Foata normal form. 0/2609 useless extension candidates. Maximal degree in co-relation 4345. Up to 491 conditions per place. [2022-11-21 09:03:54,722 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 44 selfloop transitions, 6 changer transitions 0/633 dead transitions. [2022-11-21 09:03:54,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 633 transitions, 1691 flow [2022-11-21 09:03:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:03:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:03:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4118 transitions. [2022-11-21 09:03:54,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8926945588554086 [2022-11-21 09:03:54,729 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4118 transitions. [2022-11-21 09:03:54,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4118 transitions. [2022-11-21 09:03:54,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:54,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4118 transitions. [2022-11-21 09:03:54,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 588.2857142857143) internal successors, (4118), 7 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:54,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:54,745 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:54,745 INFO L175 Difference]: Start difference. First operand has 619 places, 628 transitions, 1572 flow. Second operand 7 states and 4118 transitions. [2022-11-21 09:03:54,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 633 transitions, 1691 flow [2022-11-21 09:03:54,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 620 places, 633 transitions, 1671 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-21 09:03:54,762 INFO L231 Difference]: Finished difference. Result has 620 places, 627 transitions, 1568 flow [2022-11-21 09:03:54,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1568, PETRI_PLACES=620, PETRI_TRANSITIONS=627} [2022-11-21 09:03:54,763 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 34 predicate places. [2022-11-21 09:03:54,764 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 627 transitions, 1568 flow [2022-11-21 09:03:54,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:54,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:54,765 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:54,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 09:03:54,765 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:54,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:54,766 INFO L85 PathProgramCache]: Analyzing trace with hash -48062547, now seen corresponding path program 1 times [2022-11-21 09:03:54,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:54,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383683737] [2022-11-21 09:03:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:54,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:55,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:55,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383683737] [2022-11-21 09:03:55,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383683737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:55,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:55,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:03:55,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355521852] [2022-11-21 09:03:55,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:55,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:03:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:55,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:03:55,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:03:55,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-21 09:03:55,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 627 transitions, 1568 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:55,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:55,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-21 09:03:55,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:56,154 INFO L130 PetriNetUnfolder]: 183/2194 cut-off events. [2022-11-21 09:03:56,154 INFO L131 PetriNetUnfolder]: For 202/203 co-relation queries the response was YES. [2022-11-21 09:03:56,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 2194 events. 183/2194 cut-off events. For 202/203 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18125 event pairs, 43 based on Foata normal form. 0/1955 useless extension candidates. Maximal degree in co-relation 2736. Up to 114 conditions per place. [2022-11-21 09:03:56,212 INFO L137 encePairwiseOnDemand]: 645/659 looper letters, 61 selfloop transitions, 13 changer transitions 0/646 dead transitions. [2022-11-21 09:03:56,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 646 transitions, 1781 flow [2022-11-21 09:03:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:03:56,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:03:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5784 transitions. [2022-11-21 09:03:56,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8776934749620637 [2022-11-21 09:03:56,223 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5784 transitions. [2022-11-21 09:03:56,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5784 transitions. [2022-11-21 09:03:56,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:56,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5784 transitions. [2022-11-21 09:03:56,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.4) internal successors, (5784), 10 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:56,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:56,248 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:56,248 INFO L175 Difference]: Start difference. First operand has 620 places, 627 transitions, 1568 flow. Second operand 10 states and 5784 transitions. [2022-11-21 09:03:56,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 646 transitions, 1781 flow [2022-11-21 09:03:56,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 646 transitions, 1759 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 09:03:56,268 INFO L231 Difference]: Finished difference. Result has 627 places, 628 transitions, 1596 flow [2022-11-21 09:03:56,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1596, PETRI_PLACES=627, PETRI_TRANSITIONS=628} [2022-11-21 09:03:56,270 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 41 predicate places. [2022-11-21 09:03:56,270 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 628 transitions, 1596 flow [2022-11-21 09:03:56,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:56,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:56,272 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:56,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 09:03:56,273 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash 959887276, now seen corresponding path program 1 times [2022-11-21 09:03:56,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:56,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398263305] [2022-11-21 09:03:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:56,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:56,367 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:56,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:56,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398263305] [2022-11-21 09:03:56,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398263305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:56,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:56,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:56,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720879093] [2022-11-21 09:03:56,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:56,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:56,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:56,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:56,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:56,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-21 09:03:56,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 628 transitions, 1596 flow. Second operand has 3 states, 3 states have (on average 621.3333333333334) internal successors, (1864), 3 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:56,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:56,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-21 09:03:56,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:56,930 INFO L130 PetriNetUnfolder]: 55/1501 cut-off events. [2022-11-21 09:03:56,930 INFO L131 PetriNetUnfolder]: For 91/98 co-relation queries the response was YES. [2022-11-21 09:03:56,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 1501 events. 55/1501 cut-off events. For 91/98 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8331 event pairs, 5 based on Foata normal form. 0/1342 useless extension candidates. Maximal degree in co-relation 1725. Up to 32 conditions per place. [2022-11-21 09:03:56,971 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/631 dead transitions. [2022-11-21 09:03:56,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 631 transitions, 1629 flow [2022-11-21 09:03:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:56,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 09:03:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-21 09:03:56,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-21 09:03:56,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-21 09:03:56,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-21 09:03:56,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:56,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-21 09:03:56,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:56,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:56,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:56,985 INFO L175 Difference]: Start difference. First operand has 627 places, 628 transitions, 1596 flow. Second operand 3 states and 1874 transitions. [2022-11-21 09:03:56,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 631 transitions, 1629 flow [2022-11-21 09:03:56,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 631 transitions, 1614 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-21 09:03:57,003 INFO L231 Difference]: Finished difference. Result has 627 places, 630 transitions, 1603 flow [2022-11-21 09:03:57,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1603, PETRI_PLACES=627, PETRI_TRANSITIONS=630} [2022-11-21 09:03:57,005 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 41 predicate places. [2022-11-21 09:03:57,005 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 630 transitions, 1603 flow [2022-11-21 09:03:57,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.3333333333334) internal successors, (1864), 3 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:57,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:57,007 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:57,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 09:03:57,007 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash -648622864, now seen corresponding path program 1 times [2022-11-21 09:03:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:57,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861998477] [2022-11-21 09:03:57,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:57,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:57,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:57,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861998477] [2022-11-21 09:03:57,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861998477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:57,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:57,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:57,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095474540] [2022-11-21 09:03:57,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:57,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:57,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:57,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:57,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:57,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 630 transitions, 1603 flow. Second operand has 4 states, 4 states have (on average 583.75) internal successors, (2335), 4 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:57,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:57,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:57,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:58,213 INFO L130 PetriNetUnfolder]: 535/2890 cut-off events. [2022-11-21 09:03:58,213 INFO L131 PetriNetUnfolder]: For 609/616 co-relation queries the response was YES. [2022-11-21 09:03:58,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4374 conditions, 2890 events. 535/2890 cut-off events. For 609/616 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 29973 event pairs, 252 based on Foata normal form. 16/2202 useless extension candidates. Maximal degree in co-relation 4298. Up to 550 conditions per place. [2022-11-21 09:03:58,250 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/644 dead transitions. [2022-11-21 09:03:58,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 644 transitions, 1744 flow [2022-11-21 09:03:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:03:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 09:03:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2384 transitions. [2022-11-21 09:03:58,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9044006069802731 [2022-11-21 09:03:58,256 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2384 transitions. [2022-11-21 09:03:58,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2384 transitions. [2022-11-21 09:03:58,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:58,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2384 transitions. [2022-11-21 09:03:58,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:58,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:58,267 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:58,268 INFO L175 Difference]: Start difference. First operand has 627 places, 630 transitions, 1603 flow. Second operand 4 states and 2384 transitions. [2022-11-21 09:03:58,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 644 transitions, 1744 flow [2022-11-21 09:03:58,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 644 transitions, 1734 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 09:03:58,287 INFO L231 Difference]: Finished difference. Result has 625 places, 630 transitions, 1610 flow [2022-11-21 09:03:58,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1610, PETRI_PLACES=625, PETRI_TRANSITIONS=630} [2022-11-21 09:03:58,289 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 39 predicate places. [2022-11-21 09:03:58,289 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 630 transitions, 1610 flow [2022-11-21 09:03:58,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.75) internal successors, (2335), 4 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:58,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:58,290 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:58,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 09:03:58,291 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:58,292 INFO L85 PathProgramCache]: Analyzing trace with hash 946969714, now seen corresponding path program 1 times [2022-11-21 09:03:58,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:58,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349519129] [2022-11-21 09:03:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:58,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:58,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:58,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349519129] [2022-11-21 09:03:58,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349519129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:58,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:58,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:03:58,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581605265] [2022-11-21 09:03:58,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:58,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:03:58,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:58,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:03:58,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:03:58,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-21 09:03:58,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 630 transitions, 1610 flow. Second operand has 6 states, 6 states have (on average 545.0) internal successors, (3270), 6 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:58,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:58,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-21 09:03:58,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:59,382 INFO L130 PetriNetUnfolder]: 168/1394 cut-off events. [2022-11-21 09:03:59,382 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-11-21 09:03:59,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 1394 events. 168/1394 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9490 event pairs, 76 based on Foata normal form. 2/1271 useless extension candidates. Maximal degree in co-relation 2110. Up to 232 conditions per place. [2022-11-21 09:03:59,417 INFO L137 encePairwiseOnDemand]: 639/659 looper letters, 84 selfloop transitions, 18 changer transitions 0/646 dead transitions. [2022-11-21 09:03:59,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 646 transitions, 1851 flow [2022-11-21 09:03:59,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:03:59,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:03:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3890 transitions. [2022-11-21 09:03:59,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8432690223282029 [2022-11-21 09:03:59,426 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3890 transitions. [2022-11-21 09:03:59,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3890 transitions. [2022-11-21 09:03:59,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:59,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3890 transitions. [2022-11-21 09:03:59,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 555.7142857142857) internal successors, (3890), 7 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:59,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:59,442 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:59,442 INFO L175 Difference]: Start difference. First operand has 625 places, 630 transitions, 1610 flow. Second operand 7 states and 3890 transitions. [2022-11-21 09:03:59,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 646 transitions, 1851 flow [2022-11-21 09:03:59,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 646 transitions, 1845 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:03:59,459 INFO L231 Difference]: Finished difference. Result has 633 places, 638 transitions, 1703 flow [2022-11-21 09:03:59,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=622, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1703, PETRI_PLACES=633, PETRI_TRANSITIONS=638} [2022-11-21 09:03:59,461 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 47 predicate places. [2022-11-21 09:03:59,461 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 638 transitions, 1703 flow [2022-11-21 09:03:59,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.0) internal successors, (3270), 6 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:59,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:59,463 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:59,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 09:03:59,463 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:03:59,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:59,464 INFO L85 PathProgramCache]: Analyzing trace with hash -453484941, now seen corresponding path program 1 times [2022-11-21 09:03:59,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:59,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866594242] [2022-11-21 09:03:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:59,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:03:59,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:59,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866594242] [2022-11-21 09:03:59,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866594242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:59,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:59,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:03:59,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396693297] [2022-11-21 09:03:59,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:59,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:03:59,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:03:59,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:03:59,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:03:59,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 638 transitions, 1703 flow. Second operand has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:59,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:59,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:03:59,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:00,615 INFO L130 PetriNetUnfolder]: 160/2496 cut-off events. [2022-11-21 09:04:00,615 INFO L131 PetriNetUnfolder]: For 219/220 co-relation queries the response was YES. [2022-11-21 09:04:00,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3495 conditions, 2496 events. 160/2496 cut-off events. For 219/220 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 22498 event pairs, 48 based on Foata normal form. 0/2272 useless extension candidates. Maximal degree in co-relation 3407. Up to 129 conditions per place. [2022-11-21 09:04:00,648 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 43 selfloop transitions, 5 changer transitions 0/642 dead transitions. [2022-11-21 09:04:00,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 642 transitions, 1810 flow [2022-11-21 09:04:00,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:04:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 09:04:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3532 transitions. [2022-11-21 09:04:00,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8932726353060192 [2022-11-21 09:04:00,654 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3532 transitions. [2022-11-21 09:04:00,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3532 transitions. [2022-11-21 09:04:00,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:00,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3532 transitions. [2022-11-21 09:04:00,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 588.6666666666666) internal successors, (3532), 6 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:00,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:00,668 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:00,668 INFO L175 Difference]: Start difference. First operand has 633 places, 638 transitions, 1703 flow. Second operand 6 states and 3532 transitions. [2022-11-21 09:04:00,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 642 transitions, 1810 flow [2022-11-21 09:04:00,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 642 transitions, 1810 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 09:04:00,690 INFO L231 Difference]: Finished difference. Result has 637 places, 637 transitions, 1711 flow [2022-11-21 09:04:00,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1711, PETRI_PLACES=637, PETRI_TRANSITIONS=637} [2022-11-21 09:04:00,691 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 51 predicate places. [2022-11-21 09:04:00,692 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 637 transitions, 1711 flow [2022-11-21 09:04:00,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:00,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:00,693 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:00,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 09:04:00,694 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:00,695 INFO L85 PathProgramCache]: Analyzing trace with hash -967195565, now seen corresponding path program 1 times [2022-11-21 09:04:00,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:00,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499047566] [2022-11-21 09:04:00,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:00,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:00,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:00,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499047566] [2022-11-21 09:04:00,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499047566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:00,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:00,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:04:00,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121334877] [2022-11-21 09:04:00,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:00,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:00,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 602 out of 659 [2022-11-21 09:04:00,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 637 transitions, 1711 flow. Second operand has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:00,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:00,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 602 of 659 [2022-11-21 09:04:00,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:02,755 INFO L130 PetriNetUnfolder]: 262/7035 cut-off events. [2022-11-21 09:04:02,755 INFO L131 PetriNetUnfolder]: For 109/116 co-relation queries the response was YES. [2022-11-21 09:04:02,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 7035 events. 262/7035 cut-off events. For 109/116 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 70353 event pairs, 21 based on Foata normal form. 0/6187 useless extension candidates. Maximal degree in co-relation 8121. Up to 171 conditions per place. [2022-11-21 09:04:02,857 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 44 selfloop transitions, 4 changer transitions 0/657 dead transitions. [2022-11-21 09:04:02,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 657 transitions, 1849 flow [2022-11-21 09:04:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 09:04:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1858 transitions. [2022-11-21 09:04:02,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.939807789580172 [2022-11-21 09:04:02,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1858 transitions. [2022-11-21 09:04:02,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1858 transitions. [2022-11-21 09:04:02,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:02,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1858 transitions. [2022-11-21 09:04:02,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:02,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:02,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:02,866 INFO L175 Difference]: Start difference. First operand has 637 places, 637 transitions, 1711 flow. Second operand 3 states and 1858 transitions. [2022-11-21 09:04:02,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 657 transitions, 1849 flow [2022-11-21 09:04:02,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 657 transitions, 1840 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 09:04:02,891 INFO L231 Difference]: Finished difference. Result has 636 places, 638 transitions, 1726 flow [2022-11-21 09:04:02,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1726, PETRI_PLACES=636, PETRI_TRANSITIONS=638} [2022-11-21 09:04:02,893 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 50 predicate places. [2022-11-21 09:04:02,893 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 638 transitions, 1726 flow [2022-11-21 09:04:02,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:02,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:02,894 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:02,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 09:04:02,894 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:02,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash -984105754, now seen corresponding path program 1 times [2022-11-21 09:04:02,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:02,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654795913] [2022-11-21 09:04:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:02,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:03,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:03,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654795913] [2022-11-21 09:04:03,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654795913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:03,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:03,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:04:03,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593954919] [2022-11-21 09:04:03,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:03,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:04:03,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:03,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:04:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:04:03,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-21 09:04:03,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 638 transitions, 1726 flow. Second operand has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:03,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:03,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-21 09:04:03,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:04,406 INFO L130 PetriNetUnfolder]: 239/1861 cut-off events. [2022-11-21 09:04:04,406 INFO L131 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2022-11-21 09:04:04,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 1861 events. 239/1861 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 12236 event pairs, 100 based on Foata normal form. 2/1756 useless extension candidates. Maximal degree in co-relation 3071. Up to 305 conditions per place. [2022-11-21 09:04:04,463 INFO L137 encePairwiseOnDemand]: 638/659 looper letters, 103 selfloop transitions, 21 changer transitions 0/669 dead transitions. [2022-11-21 09:04:04,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 669 transitions, 2086 flow [2022-11-21 09:04:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:04:04,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:04:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3903 transitions. [2022-11-21 09:04:04,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8460871450249295 [2022-11-21 09:04:04,470 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3903 transitions. [2022-11-21 09:04:04,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3903 transitions. [2022-11-21 09:04:04,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:04,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3903 transitions. [2022-11-21 09:04:04,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 557.5714285714286) internal successors, (3903), 7 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:04,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:04,486 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:04,486 INFO L175 Difference]: Start difference. First operand has 636 places, 638 transitions, 1726 flow. Second operand 7 states and 3903 transitions. [2022-11-21 09:04:04,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 669 transitions, 2086 flow [2022-11-21 09:04:04,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 669 transitions, 2080 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:04:04,507 INFO L231 Difference]: Finished difference. Result has 644 places, 649 transitions, 1856 flow [2022-11-21 09:04:04,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1856, PETRI_PLACES=644, PETRI_TRANSITIONS=649} [2022-11-21 09:04:04,509 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 58 predicate places. [2022-11-21 09:04:04,509 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 649 transitions, 1856 flow [2022-11-21 09:04:04,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:04,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:04,511 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:04,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 09:04:04,511 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:04,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash -56355688, now seen corresponding path program 1 times [2022-11-21 09:04:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:04,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797573789] [2022-11-21 09:04:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:04,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:04,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:04,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797573789] [2022-11-21 09:04:04,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797573789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:04,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:04,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:04,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886233242] [2022-11-21 09:04:04,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:04,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:04:04,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:04,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:04:04,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:04:04,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-21 09:04:04,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 649 transitions, 1856 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:04,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:04,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-21 09:04:04,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:06,741 INFO L130 PetriNetUnfolder]: 944/4687 cut-off events. [2022-11-21 09:04:06,741 INFO L131 PetriNetUnfolder]: For 1111/1122 co-relation queries the response was YES. [2022-11-21 09:04:06,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 4687 events. 944/4687 cut-off events. For 1111/1122 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 52878 event pairs, 241 based on Foata normal form. 0/3690 useless extension candidates. Maximal degree in co-relation 7194. Up to 836 conditions per place. [2022-11-21 09:04:06,832 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 57 selfloop transitions, 12 changer transitions 0/664 dead transitions. [2022-11-21 09:04:06,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 664 transitions, 2030 flow [2022-11-21 09:04:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:04:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:04:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5780 transitions. [2022-11-21 09:04:06,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8770864946889226 [2022-11-21 09:04:06,841 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5780 transitions. [2022-11-21 09:04:06,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5780 transitions. [2022-11-21 09:04:06,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:06,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5780 transitions. [2022-11-21 09:04:06,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.0) internal successors, (5780), 10 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:06,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:06,864 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:06,865 INFO L175 Difference]: Start difference. First operand has 644 places, 649 transitions, 1856 flow. Second operand 10 states and 5780 transitions. [2022-11-21 09:04:06,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 664 transitions, 2030 flow [2022-11-21 09:04:06,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 664 transitions, 2030 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 09:04:06,888 INFO L231 Difference]: Finished difference. Result has 655 places, 650 transitions, 1892 flow [2022-11-21 09:04:06,889 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1892, PETRI_PLACES=655, PETRI_TRANSITIONS=650} [2022-11-21 09:04:06,890 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 69 predicate places. [2022-11-21 09:04:06,890 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 650 transitions, 1892 flow [2022-11-21 09:04:06,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:06,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:06,891 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:06,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 09:04:06,892 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:06,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:06,893 INFO L85 PathProgramCache]: Analyzing trace with hash -739074504, now seen corresponding path program 1 times [2022-11-21 09:04:06,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:06,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850860955] [2022-11-21 09:04:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:06,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:06,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:06,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850860955] [2022-11-21 09:04:06,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850860955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:06,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:06,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:04:06,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056177090] [2022-11-21 09:04:06,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:06,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:06,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:07,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:07,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:07,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-21 09:04:07,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 650 transitions, 1892 flow. Second operand has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:07,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:07,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-21 09:04:07,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:08,301 INFO L130 PetriNetUnfolder]: 208/3549 cut-off events. [2022-11-21 09:04:08,302 INFO L131 PetriNetUnfolder]: For 251/262 co-relation queries the response was YES. [2022-11-21 09:04:08,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4542 conditions, 3549 events. 208/3549 cut-off events. For 251/262 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 26652 event pairs, 55 based on Foata normal form. 0/3124 useless extension candidates. Maximal degree in co-relation 4436. Up to 152 conditions per place. [2022-11-21 09:04:08,361 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/653 dead transitions. [2022-11-21 09:04:08,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 653 transitions, 1925 flow [2022-11-21 09:04:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:08,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 09:04:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-21 09:04:08,364 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-21 09:04:08,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-21 09:04:08,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-21 09:04:08,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:08,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-21 09:04:08,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:08,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:08,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:08,369 INFO L175 Difference]: Start difference. First operand has 655 places, 650 transitions, 1892 flow. Second operand 3 states and 1874 transitions. [2022-11-21 09:04:08,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 653 transitions, 1925 flow [2022-11-21 09:04:08,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 653 transitions, 1911 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-21 09:04:08,390 INFO L231 Difference]: Finished difference. Result has 655 places, 652 transitions, 1900 flow [2022-11-21 09:04:08,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1900, PETRI_PLACES=655, PETRI_TRANSITIONS=652} [2022-11-21 09:04:08,392 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 69 predicate places. [2022-11-21 09:04:08,392 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 652 transitions, 1900 flow [2022-11-21 09:04:08,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:08,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:08,393 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:08,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-21 09:04:08,394 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:08,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1747024327, now seen corresponding path program 1 times [2022-11-21 09:04:08,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:08,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525289790] [2022-11-21 09:04:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:08,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:08,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:08,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525289790] [2022-11-21 09:04:08,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525289790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:08,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:08,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:08,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261643048] [2022-11-21 09:04:08,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:08,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:04:08,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:08,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:04:08,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:04:08,696 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-21 09:04:08,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 652 transitions, 1900 flow. Second operand has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:08,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:08,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-21 09:04:08,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:10,382 INFO L130 PetriNetUnfolder]: 824/4549 cut-off events. [2022-11-21 09:04:10,382 INFO L131 PetriNetUnfolder]: For 1072/1083 co-relation queries the response was YES. [2022-11-21 09:04:10,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7377 conditions, 4549 events. 824/4549 cut-off events. For 1072/1083 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 50625 event pairs, 253 based on Foata normal form. 0/3686 useless extension candidates. Maximal degree in co-relation 7233. Up to 726 conditions per place. [2022-11-21 09:04:10,468 INFO L137 encePairwiseOnDemand]: 645/659 looper letters, 59 selfloop transitions, 13 changer transitions 0/669 dead transitions. [2022-11-21 09:04:10,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 669 transitions, 2091 flow [2022-11-21 09:04:10,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:04:10,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:04:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5782 transitions. [2022-11-21 09:04:10,476 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773899848254931 [2022-11-21 09:04:10,476 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5782 transitions. [2022-11-21 09:04:10,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5782 transitions. [2022-11-21 09:04:10,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:10,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5782 transitions. [2022-11-21 09:04:10,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.2) internal successors, (5782), 10 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:10,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:10,496 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:10,496 INFO L175 Difference]: Start difference. First operand has 655 places, 652 transitions, 1900 flow. Second operand 10 states and 5782 transitions. [2022-11-21 09:04:10,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 669 transitions, 2091 flow [2022-11-21 09:04:10,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 669 transitions, 2085 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:04:10,522 INFO L231 Difference]: Finished difference. Result has 664 places, 653 transitions, 1932 flow [2022-11-21 09:04:10,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1932, PETRI_PLACES=664, PETRI_TRANSITIONS=653} [2022-11-21 09:04:10,525 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 78 predicate places. [2022-11-21 09:04:10,525 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 653 transitions, 1932 flow [2022-11-21 09:04:10,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:10,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:10,527 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:10,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-21 09:04:10,527 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:10,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:10,528 INFO L85 PathProgramCache]: Analyzing trace with hash -13339361, now seen corresponding path program 1 times [2022-11-21 09:04:10,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:10,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603231711] [2022-11-21 09:04:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:10,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:10,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:10,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603231711] [2022-11-21 09:04:10,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603231711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:10,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:10,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:10,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922156732] [2022-11-21 09:04:10,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:10,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:04:10,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:10,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:04:10,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:04:10,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-21 09:04:10,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 653 transitions, 1932 flow. Second operand has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:10,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:10,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-21 09:04:10,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:12,317 INFO L130 PetriNetUnfolder]: 265/2666 cut-off events. [2022-11-21 09:04:12,317 INFO L131 PetriNetUnfolder]: For 469/471 co-relation queries the response was YES. [2022-11-21 09:04:12,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 2666 events. 265/2666 cut-off events. For 469/471 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22830 event pairs, 36 based on Foata normal form. 12/2531 useless extension candidates. Maximal degree in co-relation 4283. Up to 188 conditions per place. [2022-11-21 09:04:12,377 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 57 selfloop transitions, 13 changer transitions 0/665 dead transitions. [2022-11-21 09:04:12,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 665 transitions, 2092 flow [2022-11-21 09:04:12,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:04:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:04:12,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5778 transitions. [2022-11-21 09:04:12,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.876783004552352 [2022-11-21 09:04:12,385 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5778 transitions. [2022-11-21 09:04:12,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5778 transitions. [2022-11-21 09:04:12,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:12,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5778 transitions. [2022-11-21 09:04:12,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.8) internal successors, (5778), 10 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:12,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:12,405 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:12,405 INFO L175 Difference]: Start difference. First operand has 664 places, 653 transitions, 1932 flow. Second operand 10 states and 5778 transitions. [2022-11-21 09:04:12,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 665 transitions, 2092 flow [2022-11-21 09:04:12,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 665 transitions, 2073 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 09:04:12,435 INFO L231 Difference]: Finished difference. Result has 667 places, 651 transitions, 1923 flow [2022-11-21 09:04:12,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1923, PETRI_PLACES=667, PETRI_TRANSITIONS=651} [2022-11-21 09:04:12,437 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 81 predicate places. [2022-11-21 09:04:12,437 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 651 transitions, 1923 flow [2022-11-21 09:04:12,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:12,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:12,439 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:12,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-21 09:04:12,440 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:12,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:12,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1581886081, now seen corresponding path program 1 times [2022-11-21 09:04:12,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:12,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548834042] [2022-11-21 09:04:12,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:12,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:12,577 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:12,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:12,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548834042] [2022-11-21 09:04:12,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548834042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:12,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:12,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:04:12,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698755333] [2022-11-21 09:04:12,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:12,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:12,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:12,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:12,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:12,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 602 out of 659 [2022-11-21 09:04:12,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 651 transitions, 1923 flow. Second operand has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:12,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:12,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 602 of 659 [2022-11-21 09:04:12,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:14,863 INFO L130 PetriNetUnfolder]: 643/6183 cut-off events. [2022-11-21 09:04:14,864 INFO L131 PetriNetUnfolder]: For 586/597 co-relation queries the response was YES. [2022-11-21 09:04:14,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8411 conditions, 6183 events. 643/6183 cut-off events. For 586/597 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 67001 event pairs, 176 based on Foata normal form. 0/5157 useless extension candidates. Maximal degree in co-relation 8300. Up to 522 conditions per place. [2022-11-21 09:04:14,986 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 43 selfloop transitions, 4 changer transitions 0/670 dead transitions. [2022-11-21 09:04:14,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 670 transitions, 2056 flow [2022-11-21 09:04:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:14,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 09:04:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1857 transitions. [2022-11-21 09:04:14,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9393019726858877 [2022-11-21 09:04:14,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1857 transitions. [2022-11-21 09:04:14,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1857 transitions. [2022-11-21 09:04:14,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:14,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1857 transitions. [2022-11-21 09:04:14,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 619.0) internal successors, (1857), 3 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:14,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:14,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:14,994 INFO L175 Difference]: Start difference. First operand has 667 places, 651 transitions, 1923 flow. Second operand 3 states and 1857 transitions. [2022-11-21 09:04:14,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 670 transitions, 2056 flow [2022-11-21 09:04:15,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 670 transitions, 2029 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-21 09:04:15,019 INFO L231 Difference]: Finished difference. Result has 663 places, 652 transitions, 1920 flow [2022-11-21 09:04:15,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1920, PETRI_PLACES=663, PETRI_TRANSITIONS=652} [2022-11-21 09:04:15,021 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 77 predicate places. [2022-11-21 09:04:15,022 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 652 transitions, 1920 flow [2022-11-21 09:04:15,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:15,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:15,023 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:15,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-21 09:04:15,023 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:15,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:15,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1068175457, now seen corresponding path program 1 times [2022-11-21 09:04:15,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:15,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705924492] [2022-11-21 09:04:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:15,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:15,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705924492] [2022-11-21 09:04:15,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705924492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:15,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:15,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:04:15,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644971498] [2022-11-21 09:04:15,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:15,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:04:15,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:04:15,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:04:15,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-21 09:04:15,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 652 transitions, 1920 flow. Second operand has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:15,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:15,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-21 09:04:15,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:17,860 INFO L130 PetriNetUnfolder]: 1081/6839 cut-off events. [2022-11-21 09:04:17,860 INFO L131 PetriNetUnfolder]: For 1352/1363 co-relation queries the response was YES. [2022-11-21 09:04:17,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10825 conditions, 6839 events. 1081/6839 cut-off events. For 1352/1363 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 81469 event pairs, 301 based on Foata normal form. 0/5627 useless extension candidates. Maximal degree in co-relation 10489. Up to 1350 conditions per place. [2022-11-21 09:04:17,992 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 42 selfloop transitions, 5 changer transitions 0/655 dead transitions. [2022-11-21 09:04:17,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 655 transitions, 2022 flow [2022-11-21 09:04:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:04:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 09:04:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3532 transitions. [2022-11-21 09:04:17,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8932726353060192 [2022-11-21 09:04:17,998 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3532 transitions. [2022-11-21 09:04:17,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3532 transitions. [2022-11-21 09:04:17,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:17,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3532 transitions. [2022-11-21 09:04:18,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 588.6666666666666) internal successors, (3532), 6 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:18,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:18,008 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:18,008 INFO L175 Difference]: Start difference. First operand has 663 places, 652 transitions, 1920 flow. Second operand 6 states and 3532 transitions. [2022-11-21 09:04:18,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 655 transitions, 2022 flow [2022-11-21 09:04:18,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 655 transitions, 2018 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 09:04:18,037 INFO L231 Difference]: Finished difference. Result has 666 places, 651 transitions, 1924 flow [2022-11-21 09:04:18,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=666, PETRI_TRANSITIONS=651} [2022-11-21 09:04:18,039 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 80 predicate places. [2022-11-21 09:04:18,040 INFO L495 AbstractCegarLoop]: Abstraction has has 666 places, 651 transitions, 1924 flow [2022-11-21 09:04:18,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:18,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:18,041 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:18,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-21 09:04:18,042 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:18,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:18,042 INFO L85 PathProgramCache]: Analyzing trace with hash 332279198, now seen corresponding path program 1 times [2022-11-21 09:04:18,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:18,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741600133] [2022-11-21 09:04:18,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:18,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:18,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:18,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741600133] [2022-11-21 09:04:18,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741600133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:18,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:18,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:04:18,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477745671] [2022-11-21 09:04:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:18,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:04:18,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:18,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:04:18,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:04:18,287 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-21 09:04:18,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 651 transitions, 1924 flow. Second operand has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:18,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:18,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-21 09:04:18,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:22,170 INFO L130 PetriNetUnfolder]: 2449/9889 cut-off events. [2022-11-21 09:04:22,170 INFO L131 PetriNetUnfolder]: For 2696/2707 co-relation queries the response was YES. [2022-11-21 09:04:22,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16371 conditions, 9889 events. 2449/9889 cut-off events. For 2696/2707 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 130728 event pairs, 1265 based on Foata normal form. 12/7252 useless extension candidates. Maximal degree in co-relation 16038. Up to 2659 conditions per place. [2022-11-21 09:04:22,353 INFO L137 encePairwiseOnDemand]: 639/659 looper letters, 81 selfloop transitions, 18 changer transitions 1/666 dead transitions. [2022-11-21 09:04:22,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 666 transitions, 2158 flow [2022-11-21 09:04:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:04:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:04:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3888 transitions. [2022-11-21 09:04:22,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.842835464990245 [2022-11-21 09:04:22,359 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3888 transitions. [2022-11-21 09:04:22,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3888 transitions. [2022-11-21 09:04:22,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:22,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3888 transitions. [2022-11-21 09:04:22,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 555.4285714285714) internal successors, (3888), 7 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:22,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:22,367 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:22,367 INFO L175 Difference]: Start difference. First operand has 666 places, 651 transitions, 1924 flow. Second operand 7 states and 3888 transitions. [2022-11-21 09:04:22,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 666 transitions, 2158 flow [2022-11-21 09:04:22,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 666 transitions, 2147 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 09:04:22,384 INFO L231 Difference]: Finished difference. Result has 671 places, 659 transitions, 2012 flow [2022-11-21 09:04:22,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2012, PETRI_PLACES=671, PETRI_TRANSITIONS=659} [2022-11-21 09:04:22,386 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 85 predicate places. [2022-11-21 09:04:22,386 INFO L495 AbstractCegarLoop]: Abstraction has has 671 places, 659 transitions, 2012 flow [2022-11-21 09:04:22,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:22,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:22,388 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:22,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-21 09:04:22,388 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:22,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:22,389 INFO L85 PathProgramCache]: Analyzing trace with hash -413518395, now seen corresponding path program 1 times [2022-11-21 09:04:22,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:22,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245764012] [2022-11-21 09:04:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:22,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:22,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:22,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245764012] [2022-11-21 09:04:22,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245764012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:22,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:22,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:22,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876268168] [2022-11-21 09:04:22,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:22,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:04:22,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:04:22,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:04:22,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-21 09:04:22,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 659 transitions, 2012 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:22,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:22,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-21 09:04:22,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:24,748 INFO L130 PetriNetUnfolder]: 352/3644 cut-off events. [2022-11-21 09:04:24,748 INFO L131 PetriNetUnfolder]: For 563/565 co-relation queries the response was YES. [2022-11-21 09:04:24,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 3644 events. 352/3644 cut-off events. For 563/565 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 33614 event pairs, 55 based on Foata normal form. 16/3431 useless extension candidates. Maximal degree in co-relation 5910. Up to 240 conditions per place. [2022-11-21 09:04:24,829 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 58 selfloop transitions, 13 changer transitions 0/674 dead transitions. [2022-11-21 09:04:24,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 674 transitions, 2196 flow [2022-11-21 09:04:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:04:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:04:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5779 transitions. [2022-11-21 09:04:24,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769347496206373 [2022-11-21 09:04:24,834 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5779 transitions. [2022-11-21 09:04:24,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5779 transitions. [2022-11-21 09:04:24,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:24,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5779 transitions. [2022-11-21 09:04:24,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.9) internal successors, (5779), 10 states have internal predecessors, (5779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:24,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:24,846 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:24,846 INFO L175 Difference]: Start difference. First operand has 671 places, 659 transitions, 2012 flow. Second operand 10 states and 5779 transitions. [2022-11-21 09:04:24,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 674 transitions, 2196 flow [2022-11-21 09:04:24,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 678 places, 674 transitions, 2192 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 09:04:24,865 INFO L231 Difference]: Finished difference. Result has 678 places, 658 transitions, 2030 flow [2022-11-21 09:04:24,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2030, PETRI_PLACES=678, PETRI_TRANSITIONS=658} [2022-11-21 09:04:24,867 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 92 predicate places. [2022-11-21 09:04:24,867 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 658 transitions, 2030 flow [2022-11-21 09:04:24,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:24,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:24,869 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:24,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-21 09:04:24,869 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:24,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:24,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1435324967, now seen corresponding path program 1 times [2022-11-21 09:04:24,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:24,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763418948] [2022-11-21 09:04:24,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:24,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:25,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:25,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763418948] [2022-11-21 09:04:25,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763418948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:25,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:25,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:04:25,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832404633] [2022-11-21 09:04:25,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:25,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:04:25,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:25,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:04:25,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:04:25,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-21 09:04:25,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 658 transitions, 2030 flow. Second operand has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:25,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:25,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-21 09:04:25,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:29,385 INFO L130 PetriNetUnfolder]: 2317/9321 cut-off events. [2022-11-21 09:04:29,385 INFO L131 PetriNetUnfolder]: For 3125/3136 co-relation queries the response was YES. [2022-11-21 09:04:29,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 9321 events. 2317/9321 cut-off events. For 3125/3136 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 123738 event pairs, 1100 based on Foata normal form. 12/7129 useless extension candidates. Maximal degree in co-relation 16431. Up to 2314 conditions per place. [2022-11-21 09:04:29,558 INFO L137 encePairwiseOnDemand]: 638/659 looper letters, 101 selfloop transitions, 21 changer transitions 1/688 dead transitions. [2022-11-21 09:04:29,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 688 transitions, 2385 flow [2022-11-21 09:04:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:04:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:04:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3902 transitions. [2022-11-21 09:04:29,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8458703663559506 [2022-11-21 09:04:29,562 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3902 transitions. [2022-11-21 09:04:29,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3902 transitions. [2022-11-21 09:04:29,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:29,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3902 transitions. [2022-11-21 09:04:29,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 557.4285714285714) internal successors, (3902), 7 states have internal predecessors, (3902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:29,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:29,574 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:29,574 INFO L175 Difference]: Start difference. First operand has 678 places, 658 transitions, 2030 flow. Second operand 7 states and 3902 transitions. [2022-11-21 09:04:29,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 688 transitions, 2385 flow [2022-11-21 09:04:29,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 688 transitions, 2356 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-21 09:04:29,626 INFO L231 Difference]: Finished difference. Result has 680 places, 669 transitions, 2137 flow [2022-11-21 09:04:29,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2137, PETRI_PLACES=680, PETRI_TRANSITIONS=669} [2022-11-21 09:04:29,627 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 94 predicate places. [2022-11-21 09:04:29,627 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 669 transitions, 2137 flow [2022-11-21 09:04:29,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:29,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:29,628 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:29,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-21 09:04:29,628 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:29,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash 110761515, now seen corresponding path program 1 times [2022-11-21 09:04:29,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:29,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437904782] [2022-11-21 09:04:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:29,958 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:29,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:29,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437904782] [2022-11-21 09:04:29,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437904782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:29,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:29,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:29,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555991068] [2022-11-21 09:04:29,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:29,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:04:29,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:29,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:04:29,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:04:29,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-21 09:04:29,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 669 transitions, 2137 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:29,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:29,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-21 09:04:29,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:33,121 INFO L130 PetriNetUnfolder]: 1380/6993 cut-off events. [2022-11-21 09:04:33,121 INFO L131 PetriNetUnfolder]: For 2801/2812 co-relation queries the response was YES. [2022-11-21 09:04:33,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13887 conditions, 6993 events. 1380/6993 cut-off events. For 2801/2812 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 83596 event pairs, 223 based on Foata normal form. 56/6040 useless extension candidates. Maximal degree in co-relation 13547. Up to 1111 conditions per place. [2022-11-21 09:04:33,243 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 51 selfloop transitions, 13 changer transitions 4/679 dead transitions. [2022-11-21 09:04:33,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 679 transitions, 2287 flow [2022-11-21 09:04:33,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:04:33,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:04:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5776 transitions. [2022-11-21 09:04:33,250 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8764795144157815 [2022-11-21 09:04:33,250 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5776 transitions. [2022-11-21 09:04:33,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5776 transitions. [2022-11-21 09:04:33,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:33,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5776 transitions. [2022-11-21 09:04:33,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.6) internal successors, (5776), 10 states have internal predecessors, (5776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:33,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:33,262 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:33,262 INFO L175 Difference]: Start difference. First operand has 680 places, 669 transitions, 2137 flow. Second operand 10 states and 5776 transitions. [2022-11-21 09:04:33,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 679 transitions, 2287 flow [2022-11-21 09:04:33,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 679 transitions, 2283 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 09:04:33,329 INFO L231 Difference]: Finished difference. Result has 687 places, 667 transitions, 2143 flow [2022-11-21 09:04:33,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2143, PETRI_PLACES=687, PETRI_TRANSITIONS=667} [2022-11-21 09:04:33,331 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-21 09:04:33,331 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 667 transitions, 2143 flow [2022-11-21 09:04:33,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:33,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:33,332 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:33,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-21 09:04:33,333 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:33,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:33,333 INFO L85 PathProgramCache]: Analyzing trace with hash -861358298, now seen corresponding path program 1 times [2022-11-21 09:04:33,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:33,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831356942] [2022-11-21 09:04:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:33,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:33,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:33,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831356942] [2022-11-21 09:04:33,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831356942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:33,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:33,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:33,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144988226] [2022-11-21 09:04:33,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:33,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:04:33,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:33,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:04:33,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:04:33,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-21 09:04:33,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 667 transitions, 2143 flow. Second operand has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:33,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:33,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-21 09:04:33,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:36,706 INFO L130 PetriNetUnfolder]: 1172/6729 cut-off events. [2022-11-21 09:04:36,706 INFO L131 PetriNetUnfolder]: For 2683/2694 co-relation queries the response was YES. [2022-11-21 09:04:36,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13446 conditions, 6729 events. 1172/6729 cut-off events. For 2683/2694 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 79849 event pairs, 223 based on Foata normal form. 56/5921 useless extension candidates. Maximal degree in co-relation 13103. Up to 935 conditions per place. [2022-11-21 09:04:36,798 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 44 selfloop transitions, 13 changer transitions 12/680 dead transitions. [2022-11-21 09:04:36,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 680 transitions, 2319 flow [2022-11-21 09:04:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:04:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:04:36,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5777 transitions. [2022-11-21 09:04:36,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766312594840667 [2022-11-21 09:04:36,805 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5777 transitions. [2022-11-21 09:04:36,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5777 transitions. [2022-11-21 09:04:36,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:36,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5777 transitions. [2022-11-21 09:04:36,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.7) internal successors, (5777), 10 states have internal predecessors, (5777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:36,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:36,820 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:36,820 INFO L175 Difference]: Start difference. First operand has 687 places, 667 transitions, 2143 flow. Second operand 10 states and 5777 transitions. [2022-11-21 09:04:36,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 680 transitions, 2319 flow [2022-11-21 09:04:36,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 680 transitions, 2286 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-21 09:04:36,874 INFO L231 Difference]: Finished difference. Result has 687 places, 666 transitions, 2134 flow [2022-11-21 09:04:36,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2134, PETRI_PLACES=687, PETRI_TRANSITIONS=666} [2022-11-21 09:04:36,875 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-21 09:04:36,875 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 666 transitions, 2134 flow [2022-11-21 09:04:36,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:36,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:36,876 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:36,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-21 09:04:36,877 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:36,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:36,877 INFO L85 PathProgramCache]: Analyzing trace with hash -409589875, now seen corresponding path program 1 times [2022-11-21 09:04:36,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:36,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765922202] [2022-11-21 09:04:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:36,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:37,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765922202] [2022-11-21 09:04:37,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765922202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:37,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:37,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:04:37,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271504529] [2022-11-21 09:04:37,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:37,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:04:37,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:37,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:04:37,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:04:37,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-21 09:04:37,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 666 transitions, 2134 flow. Second operand has 4 states, 4 states have (on average 599.25) internal successors, (2397), 4 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:37,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:37,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-21 09:04:37,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:40,260 INFO L130 PetriNetUnfolder]: 406/10260 cut-off events. [2022-11-21 09:04:40,260 INFO L131 PetriNetUnfolder]: For 1430/1437 co-relation queries the response was YES. [2022-11-21 09:04:40,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16337 conditions, 10260 events. 406/10260 cut-off events. For 1430/1437 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 104386 event pairs, 26 based on Foata normal form. 0/9788 useless extension candidates. Maximal degree in co-relation 16098. Up to 595 conditions per place. [2022-11-21 09:04:40,428 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/690 dead transitions. [2022-11-21 09:04:40,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 690 transitions, 2302 flow [2022-11-21 09:04:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:04:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:04:40,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3045 transitions. [2022-11-21 09:04:40,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9241274658573596 [2022-11-21 09:04:40,433 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3045 transitions. [2022-11-21 09:04:40,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3045 transitions. [2022-11-21 09:04:40,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:40,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3045 transitions. [2022-11-21 09:04:40,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:40,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:40,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:40,443 INFO L175 Difference]: Start difference. First operand has 687 places, 666 transitions, 2134 flow. Second operand 5 states and 3045 transitions. [2022-11-21 09:04:40,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 690 transitions, 2302 flow [2022-11-21 09:04:40,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 690 transitions, 2275 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-21 09:04:40,561 INFO L231 Difference]: Finished difference. Result has 687 places, 668 transitions, 2139 flow [2022-11-21 09:04:40,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2139, PETRI_PLACES=687, PETRI_TRANSITIONS=668} [2022-11-21 09:04:40,562 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-21 09:04:40,563 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 668 transitions, 2139 flow [2022-11-21 09:04:40,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 599.25) internal successors, (2397), 4 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:40,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:40,564 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:40,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-21 09:04:40,564 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:40,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:40,565 INFO L85 PathProgramCache]: Analyzing trace with hash 946322841, now seen corresponding path program 1 times [2022-11-21 09:04:40,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:40,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507930778] [2022-11-21 09:04:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:40,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:40,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:40,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507930778] [2022-11-21 09:04:40,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507930778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:40,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:40,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:04:40,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686044850] [2022-11-21 09:04:40,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:40,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:04:40,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:40,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:04:40,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:04:40,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-21 09:04:40,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 668 transitions, 2139 flow. Second operand has 4 states, 4 states have (on average 599.5) internal successors, (2398), 4 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:40,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:40,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-21 09:04:40,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:43,472 INFO L130 PetriNetUnfolder]: 731/6093 cut-off events. [2022-11-21 09:04:43,473 INFO L131 PetriNetUnfolder]: For 1096/1107 co-relation queries the response was YES. [2022-11-21 09:04:43,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10090 conditions, 6093 events. 731/6093 cut-off events. For 1096/1107 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 67809 event pairs, 165 based on Foata normal form. 0/5396 useless extension candidates. Maximal degree in co-relation 9861. Up to 637 conditions per place. [2022-11-21 09:04:43,589 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 51 selfloop transitions, 6 changer transitions 0/691 dead transitions. [2022-11-21 09:04:43,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 691 transitions, 2302 flow [2022-11-21 09:04:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:04:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:04:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3044 transitions. [2022-11-21 09:04:43,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9238239757207891 [2022-11-21 09:04:43,594 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3044 transitions. [2022-11-21 09:04:43,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3044 transitions. [2022-11-21 09:04:43,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:43,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3044 transitions. [2022-11-21 09:04:43,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 608.8) internal successors, (3044), 5 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:43,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:43,604 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:43,604 INFO L175 Difference]: Start difference. First operand has 687 places, 668 transitions, 2139 flow. Second operand 5 states and 3044 transitions. [2022-11-21 09:04:43,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 691 transitions, 2302 flow [2022-11-21 09:04:43,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 689 places, 691 transitions, 2294 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:04:43,648 INFO L231 Difference]: Finished difference. Result has 692 places, 670 transitions, 2163 flow [2022-11-21 09:04:43,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2131, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2163, PETRI_PLACES=692, PETRI_TRANSITIONS=670} [2022-11-21 09:04:43,650 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 106 predicate places. [2022-11-21 09:04:43,650 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 670 transitions, 2163 flow [2022-11-21 09:04:43,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 599.5) internal successors, (2398), 4 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:43,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:43,652 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:43,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-21 09:04:43,652 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:43,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:43,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1233792276, now seen corresponding path program 1 times [2022-11-21 09:04:43,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:43,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878764076] [2022-11-21 09:04:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:43,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:43,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:43,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878764076] [2022-11-21 09:04:43,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878764076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:04:43,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008448512] [2022-11-21 09:04:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:43,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:04:43,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:04:43,927 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:04:43,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 09:04:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:44,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 09:04:44,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:44,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:44,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008448512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:44,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:04:44,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-21 09:04:44,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263827512] [2022-11-21 09:04:44,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:44,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:04:44,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:04:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:44,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-21 09:04:44,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 670 transitions, 2163 flow. Second operand has 4 states, 4 states have (on average 601.25) internal successors, (2405), 4 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:44,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:44,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-21 09:04:44,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:45,471 INFO L130 PetriNetUnfolder]: 101/1766 cut-off events. [2022-11-21 09:04:45,471 INFO L131 PetriNetUnfolder]: For 254/258 co-relation queries the response was YES. [2022-11-21 09:04:45,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 1766 events. 101/1766 cut-off events. For 254/258 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10508 event pairs, 0 based on Foata normal form. 2/1707 useless extension candidates. Maximal degree in co-relation 2725. Up to 129 conditions per place. [2022-11-21 09:04:45,555 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 32 selfloop transitions, 6 changer transitions 0/672 dead transitions. [2022-11-21 09:04:45,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 672 transitions, 2244 flow [2022-11-21 09:04:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:04:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 09:04:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2424 transitions. [2022-11-21 09:04:45,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9195751138088012 [2022-11-21 09:04:45,558 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2424 transitions. [2022-11-21 09:04:45,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2424 transitions. [2022-11-21 09:04:45,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:45,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2424 transitions. [2022-11-21 09:04:45,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:45,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:45,563 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:45,563 INFO L175 Difference]: Start difference. First operand has 692 places, 670 transitions, 2163 flow. Second operand 4 states and 2424 transitions. [2022-11-21 09:04:45,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 672 transitions, 2244 flow [2022-11-21 09:04:45,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 672 transitions, 2236 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:04:45,584 INFO L231 Difference]: Finished difference. Result has 692 places, 669 transitions, 2163 flow [2022-11-21 09:04:45,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2163, PETRI_PLACES=692, PETRI_TRANSITIONS=669} [2022-11-21 09:04:45,586 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 106 predicate places. [2022-11-21 09:04:45,586 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 669 transitions, 2163 flow [2022-11-21 09:04:45,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 601.25) internal successors, (2405), 4 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:45,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:45,587 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:45,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 09:04:45,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:04:45,795 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:45,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:45,796 INFO L85 PathProgramCache]: Analyzing trace with hash 407146877, now seen corresponding path program 1 times [2022-11-21 09:04:45,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:45,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658944400] [2022-11-21 09:04:45,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:45,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:46,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:46,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658944400] [2022-11-21 09:04:46,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658944400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:04:46,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530729889] [2022-11-21 09:04:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:46,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:04:46,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:04:46,006 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:04:46,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 09:04:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:46,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:04:46,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:46,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:46,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530729889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:46,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:04:46,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-21 09:04:46,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611423162] [2022-11-21 09:04:46,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:46,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:04:46,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:46,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:04:46,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:46,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-21 09:04:46,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 669 transitions, 2163 flow. Second operand has 5 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:46,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:46,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-21 09:04:46,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:47,725 INFO L130 PetriNetUnfolder]: 98/1757 cut-off events. [2022-11-21 09:04:47,725 INFO L131 PetriNetUnfolder]: For 258/262 co-relation queries the response was YES. [2022-11-21 09:04:47,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 1757 events. 98/1757 cut-off events. For 258/262 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10463 event pairs, 0 based on Foata normal form. 6/1702 useless extension candidates. Maximal degree in co-relation 2706. Up to 59 conditions per place. [2022-11-21 09:04:47,811 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 48 selfloop transitions, 8 changer transitions 0/690 dead transitions. [2022-11-21 09:04:47,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 690 transitions, 2319 flow [2022-11-21 09:04:47,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:04:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 09:04:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3640 transitions. [2022-11-21 09:04:47,815 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9205867475973698 [2022-11-21 09:04:47,816 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3640 transitions. [2022-11-21 09:04:47,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3640 transitions. [2022-11-21 09:04:47,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:47,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3640 transitions. [2022-11-21 09:04:47,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 606.6666666666666) internal successors, (3640), 6 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:47,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:47,827 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:47,827 INFO L175 Difference]: Start difference. First operand has 692 places, 669 transitions, 2163 flow. Second operand 6 states and 3640 transitions. [2022-11-21 09:04:47,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 690 transitions, 2319 flow [2022-11-21 09:04:47,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 690 transitions, 2305 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 09:04:47,850 INFO L231 Difference]: Finished difference. Result has 691 places, 666 transitions, 2155 flow [2022-11-21 09:04:47,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2155, PETRI_PLACES=691, PETRI_TRANSITIONS=666} [2022-11-21 09:04:47,852 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 105 predicate places. [2022-11-21 09:04:47,853 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 666 transitions, 2155 flow [2022-11-21 09:04:47,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:47,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:47,854 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:47,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 09:04:48,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-11-21 09:04:48,063 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:48,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:48,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1300132845, now seen corresponding path program 1 times [2022-11-21 09:04:48,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:48,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510654227] [2022-11-21 09:04:48,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:48,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:48,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:48,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510654227] [2022-11-21 09:04:48,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510654227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:04:48,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209397359] [2022-11-21 09:04:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:48,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:04:48,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:04:48,273 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:04:48,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 09:04:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:48,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 09:04:48,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:48,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:48,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209397359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:48,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:04:48,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-21 09:04:48,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945751624] [2022-11-21 09:04:48,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:48,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:04:48,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:48,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:04:48,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:48,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-21 09:04:48,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 666 transitions, 2155 flow. Second operand has 4 states, 4 states have (on average 601.5) internal successors, (2406), 4 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:48,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:48,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-21 09:04:48,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:51,046 INFO L130 PetriNetUnfolder]: 780/6518 cut-off events. [2022-11-21 09:04:51,046 INFO L131 PetriNetUnfolder]: For 1268/1280 co-relation queries the response was YES. [2022-11-21 09:04:51,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10897 conditions, 6518 events. 780/6518 cut-off events. For 1268/1280 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 73296 event pairs, 444 based on Foata normal form. 13/5805 useless extension candidates. Maximal degree in co-relation 10665. Up to 995 conditions per place. [2022-11-21 09:04:51,180 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 31 selfloop transitions, 6 changer transitions 0/667 dead transitions. [2022-11-21 09:04:51,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 667 transitions, 2231 flow [2022-11-21 09:04:51,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:04:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 09:04:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2423 transitions. [2022-11-21 09:04:51,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.919195751138088 [2022-11-21 09:04:51,183 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2423 transitions. [2022-11-21 09:04:51,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2423 transitions. [2022-11-21 09:04:51,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:51,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2423 transitions. [2022-11-21 09:04:51,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 605.75) internal successors, (2423), 4 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:51,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:51,191 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:51,191 INFO L175 Difference]: Start difference. First operand has 691 places, 666 transitions, 2155 flow. Second operand 4 states and 2423 transitions. [2022-11-21 09:04:51,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 667 transitions, 2231 flow [2022-11-21 09:04:51,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 667 transitions, 2212 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 09:04:51,232 INFO L231 Difference]: Finished difference. Result has 688 places, 665 transitions, 2144 flow [2022-11-21 09:04:51,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2144, PETRI_PLACES=688, PETRI_TRANSITIONS=665} [2022-11-21 09:04:51,233 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 102 predicate places. [2022-11-21 09:04:51,233 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 665 transitions, 2144 flow [2022-11-21 09:04:51,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 601.5) internal successors, (2406), 4 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:51,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:51,235 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:51,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 09:04:51,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:04:51,436 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:51,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1649414537, now seen corresponding path program 1 times [2022-11-21 09:04:51,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:51,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858709478] [2022-11-21 09:04:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:51,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:51,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:51,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858709478] [2022-11-21 09:04:51,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858709478] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:04:51,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977338088] [2022-11-21 09:04:51,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:51,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:04:51,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:04:51,648 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:04:51,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 09:04:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:51,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:04:51,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:52,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:52,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977338088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:52,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:04:52,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-21 09:04:52,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247808648] [2022-11-21 09:04:52,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:52,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:04:52,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:52,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:04:52,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:52,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-21 09:04:52,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 665 transitions, 2144 flow. Second operand has 5 states, 5 states have (on average 600.8) internal successors, (3004), 5 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:52,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:52,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-21 09:04:52,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:54,692 INFO L130 PetriNetUnfolder]: 744/6441 cut-off events. [2022-11-21 09:04:54,693 INFO L131 PetriNetUnfolder]: For 1263/1275 co-relation queries the response was YES. [2022-11-21 09:04:54,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10763 conditions, 6441 events. 744/6441 cut-off events. For 1263/1275 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 71405 event pairs, 180 based on Foata normal form. 39/5795 useless extension candidates. Maximal degree in co-relation 10532. Up to 516 conditions per place. [2022-11-21 09:04:54,834 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 46 selfloop transitions, 8 changer transitions 0/684 dead transitions. [2022-11-21 09:04:54,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 684 transitions, 2290 flow [2022-11-21 09:04:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:04:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 09:04:54,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3638 transitions. [2022-11-21 09:04:54,838 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200809307030855 [2022-11-21 09:04:54,838 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3638 transitions. [2022-11-21 09:04:54,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3638 transitions. [2022-11-21 09:04:54,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:54,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3638 transitions. [2022-11-21 09:04:54,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 606.3333333333334) internal successors, (3638), 6 states have internal predecessors, (3638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:54,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:54,845 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:54,845 INFO L175 Difference]: Start difference. First operand has 688 places, 665 transitions, 2144 flow. Second operand 6 states and 3638 transitions. [2022-11-21 09:04:54,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 684 transitions, 2290 flow [2022-11-21 09:04:54,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 684 transitions, 2276 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 09:04:54,889 INFO L231 Difference]: Finished difference. Result has 687 places, 662 transitions, 2136 flow [2022-11-21 09:04:54,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2136, PETRI_PLACES=687, PETRI_TRANSITIONS=662} [2022-11-21 09:04:54,890 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-21 09:04:54,891 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 662 transitions, 2136 flow [2022-11-21 09:04:54,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 600.8) internal successors, (3004), 5 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:54,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:54,892 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:54,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 09:04:55,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-21 09:04:55,101 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:55,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash -987728038, now seen corresponding path program 1 times [2022-11-21 09:04:55,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:55,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107130156] [2022-11-21 09:04:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:55,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-21 09:04:55,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:55,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107130156] [2022-11-21 09:04:55,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107130156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:55,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:55,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:04:55,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145264426] [2022-11-21 09:04:55,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:55,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:55,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:55,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:55,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:55,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-21 09:04:55,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 662 transitions, 2136 flow. Second operand has 3 states, 3 states have (on average 622.3333333333334) internal successors, (1867), 3 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:55,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:55,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-21 09:04:55,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:56,251 INFO L130 PetriNetUnfolder]: 82/2108 cut-off events. [2022-11-21 09:04:56,252 INFO L131 PetriNetUnfolder]: For 289/297 co-relation queries the response was YES. [2022-11-21 09:04:56,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3379 conditions, 2108 events. 82/2108 cut-off events. For 289/297 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 12390 event pairs, 10 based on Foata normal form. 0/2032 useless extension candidates. Maximal degree in co-relation 3136. Up to 70 conditions per place. [2022-11-21 09:04:56,330 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/665 dead transitions. [2022-11-21 09:04:56,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 665 transitions, 2169 flow [2022-11-21 09:04:56,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:56,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 09:04:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-21 09:04:56,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-21 09:04:56,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-21 09:04:56,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-21 09:04:56,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:56,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-21 09:04:56,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:56,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:56,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:56,340 INFO L175 Difference]: Start difference. First operand has 687 places, 662 transitions, 2136 flow. Second operand 3 states and 1874 transitions. [2022-11-21 09:04:56,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 665 transitions, 2169 flow [2022-11-21 09:04:56,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 665 transitions, 2150 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 09:04:56,356 INFO L231 Difference]: Finished difference. Result has 686 places, 664 transitions, 2139 flow [2022-11-21 09:04:56,357 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2139, PETRI_PLACES=686, PETRI_TRANSITIONS=664} [2022-11-21 09:04:56,357 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 100 predicate places. [2022-11-21 09:04:56,358 INFO L495 AbstractCegarLoop]: Abstraction has has 686 places, 664 transitions, 2139 flow [2022-11-21 09:04:56,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 622.3333333333334) internal successors, (1867), 3 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:56,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:56,359 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:56,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-21 09:04:56,360 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:56,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:56,360 INFO L85 PathProgramCache]: Analyzing trace with hash -19769475, now seen corresponding path program 1 times [2022-11-21 09:04:56,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:56,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360244361] [2022-11-21 09:04:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:56,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:56,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:56,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360244361] [2022-11-21 09:04:56,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360244361] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:04:56,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015732421] [2022-11-21 09:04:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:56,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:04:56,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:04:56,597 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:04:56,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 09:04:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:56,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:04:56,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:57,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:04:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:04:57,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015732421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:04:57,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:04:57,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-21 09:04:57,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659384464] [2022-11-21 09:04:57,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:04:57,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:04:57,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:57,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:04:57,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:04:57,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-21 09:04:57,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 664 transitions, 2139 flow. Second operand has 10 states, 10 states have (on average 600.9) internal successors, (6009), 10 states have internal predecessors, (6009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:57,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:57,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-21 09:04:57,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:59,488 INFO L130 PetriNetUnfolder]: 188/3171 cut-off events. [2022-11-21 09:04:59,488 INFO L131 PetriNetUnfolder]: For 405/409 co-relation queries the response was YES. [2022-11-21 09:04:59,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5275 conditions, 3171 events. 188/3171 cut-off events. For 405/409 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 18536 event pairs, 20 based on Foata normal form. 6/3075 useless extension candidates. Maximal degree in co-relation 5032. Up to 107 conditions per place. [2022-11-21 09:04:59,626 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 89 selfloop transitions, 11 changer transitions 0/732 dead transitions. [2022-11-21 09:04:59,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 732 transitions, 2496 flow [2022-11-21 09:04:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:04:59,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:04:59,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5476 transitions. [2022-11-21 09:04:59,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9232844377002192 [2022-11-21 09:04:59,631 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5476 transitions. [2022-11-21 09:04:59,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5476 transitions. [2022-11-21 09:04:59,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:59,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5476 transitions. [2022-11-21 09:04:59,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 608.4444444444445) internal successors, (5476), 9 states have internal predecessors, (5476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:59,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:59,641 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:59,641 INFO L175 Difference]: Start difference. First operand has 686 places, 664 transitions, 2139 flow. Second operand 9 states and 5476 transitions. [2022-11-21 09:04:59,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 732 transitions, 2496 flow [2022-11-21 09:04:59,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 732 transitions, 2490 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:04:59,659 INFO L231 Difference]: Finished difference. Result has 697 places, 669 transitions, 2201 flow [2022-11-21 09:04:59,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2201, PETRI_PLACES=697, PETRI_TRANSITIONS=669} [2022-11-21 09:04:59,660 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 111 predicate places. [2022-11-21 09:04:59,660 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 669 transitions, 2201 flow [2022-11-21 09:04:59,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 600.9) internal successors, (6009), 10 states have internal predecessors, (6009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:59,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:59,662 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:59,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 09:04:59,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-21 09:04:59,864 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:04:59,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1017127802, now seen corresponding path program 1 times [2022-11-21 09:04:59,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:59,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517718210] [2022-11-21 09:04:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:59,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-21 09:04:59,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:59,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517718210] [2022-11-21 09:04:59,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517718210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:59,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:59,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:04:59,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043398920] [2022-11-21 09:04:59,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:59,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:59,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:59,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:59,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:59,975 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-21 09:04:59,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 669 transitions, 2201 flow. Second operand has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:59,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:59,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-21 09:04:59,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:05:02,935 INFO L130 PetriNetUnfolder]: 574/6758 cut-off events. [2022-11-21 09:05:02,935 INFO L131 PetriNetUnfolder]: For 920/940 co-relation queries the response was YES. [2022-11-21 09:05:03,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10619 conditions, 6758 events. 574/6758 cut-off events. For 920/940 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 67994 event pairs, 200 based on Foata normal form. 0/6209 useless extension candidates. Maximal degree in co-relation 10384. Up to 475 conditions per place. [2022-11-21 09:05:03,116 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/672 dead transitions. [2022-11-21 09:05:03,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 672 transitions, 2234 flow [2022-11-21 09:05:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:05:03,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 09:05:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-21 09:05:03,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-21 09:05:03,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-21 09:05:03,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-21 09:05:03,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:05:03,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-21 09:05:03,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:03,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:03,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:03,123 INFO L175 Difference]: Start difference. First operand has 697 places, 669 transitions, 2201 flow. Second operand 3 states and 1874 transitions. [2022-11-21 09:05:03,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 672 transitions, 2234 flow [2022-11-21 09:05:03,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 672 transitions, 2220 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-21 09:05:03,156 INFO L231 Difference]: Finished difference. Result has 698 places, 671 transitions, 2209 flow [2022-11-21 09:05:03,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2187, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2209, PETRI_PLACES=698, PETRI_TRANSITIONS=671} [2022-11-21 09:05:03,157 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 112 predicate places. [2022-11-21 09:05:03,157 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 671 transitions, 2209 flow [2022-11-21 09:05:03,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:03,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:05:03,158 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:03,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-21 09:05:03,159 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:05:03,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:03,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1791835977, now seen corresponding path program 1 times [2022-11-21 09:05:03,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:03,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16926894] [2022-11-21 09:05:03,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:03,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:05:03,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:03,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16926894] [2022-11-21 09:05:03,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16926894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:05:03,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688174717] [2022-11-21 09:05:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:03,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:05:03,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:05:03,381 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:05:03,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 09:05:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:03,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:05:03,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:05:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:05:03,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:05:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:05:04,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688174717] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:05:04,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:05:04,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-21 09:05:04,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400272642] [2022-11-21 09:05:04,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:05:04,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:05:04,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:04,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:05:04,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:05:04,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-21 09:05:04,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 671 transitions, 2209 flow. Second operand has 10 states, 10 states have (on average 601.0) internal successors, (6010), 10 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:04,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:05:04,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-21 09:05:04,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:05:15,131 INFO L130 PetriNetUnfolder]: 2390/19951 cut-off events. [2022-11-21 09:05:15,131 INFO L131 PetriNetUnfolder]: For 3786/3806 co-relation queries the response was YES. [2022-11-21 09:05:15,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33470 conditions, 19951 events. 2390/19951 cut-off events. For 3786/3806 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 266949 event pairs, 400 based on Foata normal form. 63/17890 useless extension candidates. Maximal degree in co-relation 33233. Up to 1680 conditions per place. [2022-11-21 09:05:15,564 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 86 selfloop transitions, 11 changer transitions 0/736 dead transitions. [2022-11-21 09:05:15,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 706 places, 736 transitions, 2551 flow [2022-11-21 09:05:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:05:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:05:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5473 transitions. [2022-11-21 09:05:15,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9227786208059349 [2022-11-21 09:05:15,569 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5473 transitions. [2022-11-21 09:05:15,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5473 transitions. [2022-11-21 09:05:15,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:05:15,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5473 transitions. [2022-11-21 09:05:15,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 608.1111111111111) internal successors, (5473), 9 states have internal predecessors, (5473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:15,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:15,579 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:15,579 INFO L175 Difference]: Start difference. First operand has 698 places, 671 transitions, 2209 flow. Second operand 9 states and 5473 transitions. [2022-11-21 09:05:15,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 706 places, 736 transitions, 2551 flow [2022-11-21 09:05:15,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 736 transitions, 2545 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:05:15,803 INFO L231 Difference]: Finished difference. Result has 709 places, 676 transitions, 2271 flow [2022-11-21 09:05:15,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2271, PETRI_PLACES=709, PETRI_TRANSITIONS=676} [2022-11-21 09:05:15,804 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 123 predicate places. [2022-11-21 09:05:15,804 INFO L495 AbstractCegarLoop]: Abstraction has has 709 places, 676 transitions, 2271 flow [2022-11-21 09:05:15,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 601.0) internal successors, (6010), 10 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:15,806 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:05:15,806 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:15,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 09:05:16,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-11-21 09:05:16,015 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:05:16,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1936825645, now seen corresponding path program 1 times [2022-11-21 09:05:16,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:16,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510476938] [2022-11-21 09:05:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:16,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:05:16,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:16,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510476938] [2022-11-21 09:05:16,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510476938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:05:16,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957064646] [2022-11-21 09:05:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:16,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:05:16,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:05:16,492 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:05:16,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 09:05:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:16,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 09:05:16,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:05:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:05:17,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:05:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:05:17,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957064646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:05:17,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:05:17,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-21 09:05:17,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583580706] [2022-11-21 09:05:17,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:05:17,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 09:05:17,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:17,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 09:05:17,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:05:17,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-21 09:05:17,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 709 places, 676 transitions, 2271 flow. Second operand has 16 states, 16 states have (on average 600.4375) internal successors, (9607), 16 states have internal predecessors, (9607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:17,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:05:17,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-21 09:05:17,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:05:29,651 INFO L130 PetriNetUnfolder]: 772/17429 cut-off events. [2022-11-21 09:05:29,651 INFO L131 PetriNetUnfolder]: For 2294/2302 co-relation queries the response was YES. [2022-11-21 09:05:30,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28095 conditions, 17429 events. 772/17429 cut-off events. For 2294/2302 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 161755 event pairs, 17 based on Foata normal form. 10/16796 useless extension candidates. Maximal degree in co-relation 27842. Up to 885 conditions per place. [2022-11-21 09:05:30,157 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 150 selfloop transitions, 26 changer transitions 0/815 dead transitions. [2022-11-21 09:05:30,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 728 places, 815 transitions, 3002 flow [2022-11-21 09:05:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 09:05:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 09:05:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 12119 transitions. [2022-11-21 09:05:30,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9194992412746585 [2022-11-21 09:05:30,168 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 12119 transitions. [2022-11-21 09:05:30,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 12119 transitions. [2022-11-21 09:05:30,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:05:30,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 12119 transitions. [2022-11-21 09:05:30,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 605.95) internal successors, (12119), 20 states have internal predecessors, (12119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:30,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:30,188 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:30,189 INFO L175 Difference]: Start difference. First operand has 709 places, 676 transitions, 2271 flow. Second operand 20 states and 12119 transitions. [2022-11-21 09:05:30,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 728 places, 815 transitions, 3002 flow [2022-11-21 09:05:30,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 815 transitions, 2988 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-21 09:05:30,381 INFO L231 Difference]: Finished difference. Result has 730 places, 691 transitions, 2425 flow [2022-11-21 09:05:30,382 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2425, PETRI_PLACES=730, PETRI_TRANSITIONS=691} [2022-11-21 09:05:30,383 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 144 predicate places. [2022-11-21 09:05:30,383 INFO L495 AbstractCegarLoop]: Abstraction has has 730 places, 691 transitions, 2425 flow [2022-11-21 09:05:30,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 600.4375) internal successors, (9607), 16 states have internal predecessors, (9607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:30,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:05:30,386 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:30,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 09:05:30,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:05:30,601 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:05:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash 334747225, now seen corresponding path program 1 times [2022-11-21 09:05:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:30,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687039519] [2022-11-21 09:05:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:05:30,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:30,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687039519] [2022-11-21 09:05:30,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687039519] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:05:30,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670426163] [2022-11-21 09:05:30,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:30,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:05:30,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:05:30,952 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:05:30,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 09:05:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:31,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 09:05:31,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:05:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:05:31,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:05:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:05:31,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670426163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:05:31,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:05:31,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-21 09:05:31,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582292515] [2022-11-21 09:05:31,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:05:31,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 09:05:31,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:31,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 09:05:31,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:05:31,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-21 09:05:31,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 730 places, 691 transitions, 2425 flow. Second operand has 16 states, 16 states have (on average 600.5) internal successors, (9608), 16 states have internal predecessors, (9608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:31,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:05:31,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-21 09:05:31,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:06:07,745 INFO L130 PetriNetUnfolder]: 6645/53178 cut-off events. [2022-11-21 09:06:07,745 INFO L131 PetriNetUnfolder]: For 11841/11873 co-relation queries the response was YES. [2022-11-21 09:06:09,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90025 conditions, 53178 events. 6645/53178 cut-off events. For 11841/11873 co-relation queries the response was YES. Maximal size of possible extension queue 2525. Compared 823148 event pairs, 512 based on Foata normal form. 165/47186 useless extension candidates. Maximal degree in co-relation 89779. Up to 4704 conditions per place. [2022-11-21 09:06:09,152 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 144 selfloop transitions, 26 changer transitions 0/824 dead transitions. [2022-11-21 09:06:09,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 749 places, 824 transitions, 3126 flow [2022-11-21 09:06:09,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 09:06:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 09:06:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 12113 transitions. [2022-11-21 09:06:09,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9190440060698027 [2022-11-21 09:06:09,162 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 12113 transitions. [2022-11-21 09:06:09,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 12113 transitions. [2022-11-21 09:06:09,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:06:09,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 12113 transitions. [2022-11-21 09:06:09,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 605.65) internal successors, (12113), 20 states have internal predecessors, (12113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:06:09,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:06:09,182 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:06:09,182 INFO L175 Difference]: Start difference. First operand has 730 places, 691 transitions, 2425 flow. Second operand 20 states and 12113 transitions. [2022-11-21 09:06:09,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 749 places, 824 transitions, 3126 flow [2022-11-21 09:06:11,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 741 places, 824 transitions, 3076 flow, removed 16 selfloop flow, removed 8 redundant places. [2022-11-21 09:06:11,048 INFO L231 Difference]: Finished difference. Result has 746 places, 706 transitions, 2543 flow [2022-11-21 09:06:11,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2543, PETRI_PLACES=746, PETRI_TRANSITIONS=706} [2022-11-21 09:06:11,049 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 160 predicate places. [2022-11-21 09:06:11,049 INFO L495 AbstractCegarLoop]: Abstraction has has 746 places, 706 transitions, 2543 flow [2022-11-21 09:06:11,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 600.5) internal successors, (9608), 16 states have internal predecessors, (9608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:06:11,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:06:11,050 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:06:11,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 09:06:11,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-21 09:06:11,252 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-21 09:06:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:06:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1953768163, now seen corresponding path program 2 times [2022-11-21 09:06:11,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:06:11,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863884939] [2022-11-21 09:06:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:06:11,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:06:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:06:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-21 09:06:11,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:06:11,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863884939] [2022-11-21 09:06:11,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863884939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:06:11,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515824343] [2022-11-21 09:06:11,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:06:11,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:06:11,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:06:11,664 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:06:11,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc65429-634b-4c4d-bb58-bbe65d8058f4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 09:06:12,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 09:06:12,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:06:12,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 09:06:12,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:06:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-11-21 09:06:12,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:06:12,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515824343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:06:12,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:06:12,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-11-21 09:06:12,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216999343] [2022-11-21 09:06:12,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:06:12,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:06:12,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:06:12,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:06:12,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:06:12,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 564 out of 659 [2022-11-21 09:06:12,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 706 transitions, 2543 flow. Second operand has 5 states, 5 states have (on average 568.8) internal successors, (2844), 5 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:06:12,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:06:12,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 564 of 659 [2022-11-21 09:06:12,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand