./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.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_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/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_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/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_4734e01f-37d3-4023-9516-c56c58c30dc6/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 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --- 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 17:11:05,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:11:05,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:11:05,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:11:05,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:11:05,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:11:05,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:11:05,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:11:05,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:11:05,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:11:05,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:11:05,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:11:05,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:11:05,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:11:05,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:11:05,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:11:05,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:11:05,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:11:05,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:11:05,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:11:05,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:11:05,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:11:05,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:11:05,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:11:05,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:11:05,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:11:05,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:11:05,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:11:05,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:11:05,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:11:05,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:11:05,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:11:05,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:11:05,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:11:05,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:11:05,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:11:05,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:11:05,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:11:05,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:11:05,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:11:05,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:11:05,226 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:11:05,264 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:11:05,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:11:05,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:11:05,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:11:05,266 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:11:05,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:11:05,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:11:05,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:11:05,267 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:11:05,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:11:05,268 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:11:05,269 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:11:05,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:11:05,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:11:05,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:11:05,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:11:05,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:11:05,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:11:05,270 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:11:05,270 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:11:05,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:11:05,271 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:11:05,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:11:05,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:11:05,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:11:05,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:11:05,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:11:05,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:11:05,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:11:05,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:11:05,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:11:05,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:11:05,274 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:11:05,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:11:05,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:11:05,274 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_4734e01f-37d3-4023-9516-c56c58c30dc6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2022-11-21 17:11:05,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:11:05,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:11:05,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:11:05,662 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:11:05,663 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:11:05,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-11-21 17:11:08,721 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:11:08,898 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:11:08,899 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-11-21 17:11:08,905 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a/data/da2811ece/06b5fe1ecd6d4a5d995405ce820e8d12/FLAG2b2674fbc [2022-11-21 17:11:08,918 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a/data/da2811ece/06b5fe1ecd6d4a5d995405ce820e8d12 [2022-11-21 17:11:08,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:11:08,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:11:08,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:11:08,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:11:08,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:11:08,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:11:08" (1/1) ... [2022-11-21 17:11:08,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc512e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:08, skipping insertion in model container [2022-11-21 17:11:08,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:11:08" (1/1) ... [2022-11-21 17:11:08,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:11:08,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:11:09,179 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_4734e01f-37d3-4023-9516-c56c58c30dc6/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-11-21 17:11:09,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:11:09,192 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:11:09,215 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_4734e01f-37d3-4023-9516-c56c58c30dc6/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-11-21 17:11:09,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:11:09,231 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:11:09,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09 WrapperNode [2022-11-21 17:11:09,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:11:09,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:11:09,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:11:09,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:11:09,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09" (1/1) ... [2022-11-21 17:11:09,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09" (1/1) ... [2022-11-21 17:11:09,288 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 209 [2022-11-21 17:11:09,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:11:09,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:11:09,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:11:09,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:11:09,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09" (1/1) ... [2022-11-21 17:11:09,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09" (1/1) ... [2022-11-21 17:11:09,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09" (1/1) ... [2022-11-21 17:11:09,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09" (1/1) ... [2022-11-21 17:11:09,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09" (1/1) ... [2022-11-21 17:11:09,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09" (1/1) ... [2022-11-21 17:11:09,328 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09" (1/1) ... [2022-11-21 17:11:09,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09" (1/1) ... [2022-11-21 17:11:09,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:11:09,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:11:09,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:11:09,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:11:09,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09" (1/1) ... [2022-11-21 17:11:09,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:11:09,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:11:09,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:11:09,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:11:09,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:11:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 17:11:09,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 17:11:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 17:11:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 17:11:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 17:11:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 17:11:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:11:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:11:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:11:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:11:09,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:11:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:11:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:11:09,418 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 17:11:09,519 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:11:09,521 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:11:10,105 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:11:10,116 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:11:10,117 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 17:11:10,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:11:10 BoogieIcfgContainer [2022-11-21 17:11:10,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:11:10,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:11:10,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:11:10,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:11:10,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:11:08" (1/3) ... [2022-11-21 17:11:10,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b24cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:11:10, skipping insertion in model container [2022-11-21 17:11:10,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:11:09" (2/3) ... [2022-11-21 17:11:10,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b24cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:11:10, skipping insertion in model container [2022-11-21 17:11:10,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:11:10" (3/3) ... [2022-11-21 17:11:10,142 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-11-21 17:11:10,156 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:11:10,167 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:11:10,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-21 17:11:10,167 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:11:10,290 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 17:11:10,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 285 transitions, 594 flow [2022-11-21 17:11:10,488 INFO L130 PetriNetUnfolder]: 20/282 cut-off events. [2022-11-21 17:11:10,488 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 17:11:10,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 282 events. 20/282 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 728 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 205. Up to 2 conditions per place. [2022-11-21 17:11:10,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 285 transitions, 594 flow [2022-11-21 17:11:10,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 253 transitions, 521 flow [2022-11-21 17:11:10,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:11:10,528 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;@fa8e7a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:11:10,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-21 17:11:10,560 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-21 17:11:10,560 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:11:10,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:10,561 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] [2022-11-21 17:11:10,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:10,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:10,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1001472441, now seen corresponding path program 1 times [2022-11-21 17:11:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:10,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551790351] [2022-11-21 17:11:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:10,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,161 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 17:11:11,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:11,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551790351] [2022-11-21 17:11:11,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551790351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:11,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:11,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:11,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398071157] [2022-11-21 17:11:11,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:11,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:11,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:11,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:11,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:11,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 285 [2022-11-21 17:11:11,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 253 transitions, 521 flow. Second operand has 6 states, 6 states have (on average 245.83333333333334) internal successors, (1475), 6 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states 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 17:11:11,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:11,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 285 [2022-11-21 17:11:11,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:11,612 INFO L130 PetriNetUnfolder]: 72/482 cut-off events. [2022-11-21 17:11:11,612 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-11-21 17:11:11,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 482 events. 72/482 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2481 event pairs, 2 based on Foata normal form. 115/535 useless extension candidates. Maximal degree in co-relation 610. Up to 119 conditions per place. [2022-11-21 17:11:11,632 INFO L137 encePairwiseOnDemand]: 273/285 looper letters, 33 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-21 17:11:11,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 254 transitions, 617 flow [2022-11-21 17:11:11,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:11:11,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:11:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1517 transitions. [2022-11-21 17:11:11,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8871345029239766 [2022-11-21 17:11:11,659 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1517 transitions. [2022-11-21 17:11:11,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1517 transitions. [2022-11-21 17:11:11,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:11,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1517 transitions. [2022-11-21 17:11:11,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states 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 17:11:11,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:11,694 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:11,696 INFO L175 Difference]: Start difference. First operand has 245 places, 253 transitions, 521 flow. Second operand 6 states and 1517 transitions. [2022-11-21 17:11:11,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 254 transitions, 617 flow [2022-11-21 17:11:11,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 254 transitions, 598 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 17:11:11,712 INFO L231 Difference]: Finished difference. Result has 244 places, 246 transitions, 508 flow [2022-11-21 17:11:11,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=508, PETRI_PLACES=244, PETRI_TRANSITIONS=246} [2022-11-21 17:11:11,722 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, -1 predicate places. [2022-11-21 17:11:11,722 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 246 transitions, 508 flow [2022-11-21 17:11:11,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 245.83333333333334) internal successors, (1475), 6 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states 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 17:11:11,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:11,724 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] [2022-11-21 17:11:11,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:11:11,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash 980875305, now seen corresponding path program 1 times [2022-11-21 17:11:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:11,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339865007] [2022-11-21 17:11:11,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:11,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,892 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 17:11:11,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:11,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339865007] [2022-11-21 17:11:11,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339865007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:11,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:11,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:11:11,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115830009] [2022-11-21 17:11:11,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:11,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:11:11,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:11,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:11:11,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:11:11,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-21 17:11:11,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 246 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 17:11:11,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:11,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-21 17:11:11,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:12,251 INFO L130 PetriNetUnfolder]: 87/780 cut-off events. [2022-11-21 17:11:12,252 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-21 17:11:12,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 780 events. 87/780 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5123 event pairs, 24 based on Foata normal form. 0/663 useless extension candidates. Maximal degree in co-relation 668. Up to 71 conditions per place. [2022-11-21 17:11:12,269 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 37 selfloop transitions, 4 changer transitions 0/260 dead transitions. [2022-11-21 17:11:12,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 260 transitions, 626 flow [2022-11-21 17:11:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:11:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:11:12,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1031 transitions. [2022-11-21 17:11:12,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9043859649122807 [2022-11-21 17:11:12,273 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1031 transitions. [2022-11-21 17:11:12,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1031 transitions. [2022-11-21 17:11:12,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:12,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1031 transitions. [2022-11-21 17:11:12,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:11:12,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:12,281 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:12,282 INFO L175 Difference]: Start difference. First operand has 244 places, 246 transitions, 508 flow. Second operand 4 states and 1031 transitions. [2022-11-21 17:11:12,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 260 transitions, 626 flow [2022-11-21 17:11:12,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 260 transitions, 617 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:11:12,292 INFO L231 Difference]: Finished difference. Result has 245 places, 247 transitions, 523 flow [2022-11-21 17:11:12,292 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=523, PETRI_PLACES=245, PETRI_TRANSITIONS=247} [2022-11-21 17:11:12,294 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 0 predicate places. [2022-11-21 17:11:12,294 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 247 transitions, 523 flow [2022-11-21 17:11:12,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 17:11:12,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:12,296 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] [2022-11-21 17:11:12,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:11:12,297 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:12,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:12,297 INFO L85 PathProgramCache]: Analyzing trace with hash 518337590, now seen corresponding path program 1 times [2022-11-21 17:11:12,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:12,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499507525] [2022-11-21 17:11:12,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:12,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:12,460 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 17:11:12,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:12,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499507525] [2022-11-21 17:11:12,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499507525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:12,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:12,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:12,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344669497] [2022-11-21 17:11:12,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:12,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:12,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:12,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:12,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:12,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 285 [2022-11-21 17:11:12,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 247 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states 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 17:11:12,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:12,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 285 [2022-11-21 17:11:12,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:13,007 INFO L130 PetriNetUnfolder]: 246/1486 cut-off events. [2022-11-21 17:11:13,008 INFO L131 PetriNetUnfolder]: For 123/355 co-relation queries the response was YES. [2022-11-21 17:11:13,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 1486 events. 246/1486 cut-off events. For 123/355 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11416 event pairs, 20 based on Foata normal form. 0/1206 useless extension candidates. Maximal degree in co-relation 1579. Up to 327 conditions per place. [2022-11-21 17:11:13,045 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 32 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-21 17:11:13,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 253 transitions, 616 flow [2022-11-21 17:11:13,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:11:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:11:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1502 transitions. [2022-11-21 17:11:13,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783625730994152 [2022-11-21 17:11:13,053 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1502 transitions. [2022-11-21 17:11:13,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1502 transitions. [2022-11-21 17:11:13,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:13,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1502 transitions. [2022-11-21 17:11:13,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states 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 17:11:13,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:13,065 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:13,066 INFO L175 Difference]: Start difference. First operand has 245 places, 247 transitions, 523 flow. Second operand 6 states and 1502 transitions. [2022-11-21 17:11:13,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 253 transitions, 616 flow [2022-11-21 17:11:13,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 253 transitions, 616 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:11:13,072 INFO L231 Difference]: Finished difference. Result has 249 places, 246 transitions, 531 flow [2022-11-21 17:11:13,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=531, PETRI_PLACES=249, PETRI_TRANSITIONS=246} [2022-11-21 17:11:13,075 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 4 predicate places. [2022-11-21 17:11:13,075 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 246 transitions, 531 flow [2022-11-21 17:11:13,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states 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 17:11:13,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:13,077 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] [2022-11-21 17:11:13,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:11:13,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1111403126, now seen corresponding path program 1 times [2022-11-21 17:11:13,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:13,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338688501] [2022-11-21 17:11:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:13,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:13,226 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 17:11:13,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:13,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338688501] [2022-11-21 17:11:13,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338688501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:13,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:13,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:11:13,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273337411] [2022-11-21 17:11:13,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:13,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:11:13,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:11:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:11:13,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-21 17:11:13,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 246 transitions, 531 flow. Second operand has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 17:11:13,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:13,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-21 17:11:13,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:13,571 INFO L130 PetriNetUnfolder]: 138/945 cut-off events. [2022-11-21 17:11:13,572 INFO L131 PetriNetUnfolder]: For 104/378 co-relation queries the response was YES. [2022-11-21 17:11:13,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 945 events. 138/945 cut-off events. For 104/378 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7016 event pairs, 48 based on Foata normal form. 0/776 useless extension candidates. Maximal degree in co-relation 1060. Up to 126 conditions per place. [2022-11-21 17:11:13,602 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 36 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2022-11-21 17:11:13,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 259 transitions, 644 flow [2022-11-21 17:11:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:11:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:11:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1030 transitions. [2022-11-21 17:11:13,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9035087719298246 [2022-11-21 17:11:13,605 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1030 transitions. [2022-11-21 17:11:13,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1030 transitions. [2022-11-21 17:11:13,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:13,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1030 transitions. [2022-11-21 17:11:13,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.5) internal successors, (1030), 4 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 17:11:13,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:13,617 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:13,618 INFO L175 Difference]: Start difference. First operand has 249 places, 246 transitions, 531 flow. Second operand 4 states and 1030 transitions. [2022-11-21 17:11:13,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 259 transitions, 644 flow [2022-11-21 17:11:13,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 259 transitions, 635 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:11:13,624 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 546 flow [2022-11-21 17:11:13,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2022-11-21 17:11:13,631 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 5 predicate places. [2022-11-21 17:11:13,631 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 546 flow [2022-11-21 17:11:13,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 17:11:13,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:13,633 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] [2022-11-21 17:11:13,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:11:13,633 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:13,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash 323604880, now seen corresponding path program 1 times [2022-11-21 17:11:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:13,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343147596] [2022-11-21 17:11:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:13,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:13,794 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 17:11:13,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:13,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343147596] [2022-11-21 17:11:13,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343147596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:13,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:13,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:11:13,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655376798] [2022-11-21 17:11:13,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:13,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:11:13,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:13,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:11:13,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:11:13,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-21 17:11:13,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 546 flow. Second operand has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 17:11:13,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:13,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-21 17:11:13,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:14,068 INFO L130 PetriNetUnfolder]: 81/918 cut-off events. [2022-11-21 17:11:14,069 INFO L131 PetriNetUnfolder]: For 55/59 co-relation queries the response was YES. [2022-11-21 17:11:14,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 918 events. 81/918 cut-off events. For 55/59 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6417 event pairs, 24 based on Foata normal form. 3/803 useless extension candidates. Maximal degree in co-relation 1062. Up to 72 conditions per place. [2022-11-21 17:11:14,091 INFO L137 encePairwiseOnDemand]: 281/285 looper letters, 37 selfloop transitions, 3 changer transitions 0/259 dead transitions. [2022-11-21 17:11:14,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 259 transitions, 654 flow [2022-11-21 17:11:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:11:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:11:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1029 transitions. [2022-11-21 17:11:14,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9026315789473685 [2022-11-21 17:11:14,095 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1029 transitions. [2022-11-21 17:11:14,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1029 transitions. [2022-11-21 17:11:14,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:14,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1029 transitions. [2022-11-21 17:11:14,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states 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 17:11:14,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:14,103 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:14,103 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 546 flow. Second operand 4 states and 1029 transitions. [2022-11-21 17:11:14,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 259 transitions, 654 flow [2022-11-21 17:11:14,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 259 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:11:14,110 INFO L231 Difference]: Finished difference. Result has 252 places, 246 transitions, 544 flow [2022-11-21 17:11:14,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=544, PETRI_PLACES=252, PETRI_TRANSITIONS=246} [2022-11-21 17:11:14,113 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 7 predicate places. [2022-11-21 17:11:14,114 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 246 transitions, 544 flow [2022-11-21 17:11:14,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 17:11:14,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:14,115 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] [2022-11-21 17:11:14,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:11:14,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:14,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:14,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1441817411, now seen corresponding path program 1 times [2022-11-21 17:11:14,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:14,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714727314] [2022-11-21 17:11:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:14,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:14,257 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 17:11:14,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:14,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714727314] [2022-11-21 17:11:14,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714727314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:14,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:14,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:14,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510826839] [2022-11-21 17:11:14,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:14,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:14,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:14,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:14,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:14,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 285 [2022-11-21 17:11:14,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 246 transitions, 544 flow. Second operand has 6 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states 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 17:11:14,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:14,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 285 [2022-11-21 17:11:14,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:14,606 INFO L130 PetriNetUnfolder]: 104/1056 cut-off events. [2022-11-21 17:11:14,606 INFO L131 PetriNetUnfolder]: For 49/65 co-relation queries the response was YES. [2022-11-21 17:11:14,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 1056 events. 104/1056 cut-off events. For 49/65 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7645 event pairs, 7 based on Foata normal form. 0/926 useless extension candidates. Maximal degree in co-relation 1227. Up to 168 conditions per place. [2022-11-21 17:11:14,643 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 31 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-21 17:11:14,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 253 transitions, 638 flow [2022-11-21 17:11:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:11:14,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:11:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1501 transitions. [2022-11-21 17:11:14,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8777777777777778 [2022-11-21 17:11:14,647 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1501 transitions. [2022-11-21 17:11:14,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1501 transitions. [2022-11-21 17:11:14,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:14,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1501 transitions. [2022-11-21 17:11:14,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.16666666666666) internal successors, (1501), 6 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states 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 17:11:14,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:14,656 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:14,656 INFO L175 Difference]: Start difference. First operand has 252 places, 246 transitions, 544 flow. Second operand 6 states and 1501 transitions. [2022-11-21 17:11:14,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 253 transitions, 638 flow [2022-11-21 17:11:14,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 253 transitions, 633 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:11:14,663 INFO L231 Difference]: Finished difference. Result has 254 places, 245 transitions, 547 flow [2022-11-21 17:11:14,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=254, PETRI_TRANSITIONS=245} [2022-11-21 17:11:14,667 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 9 predicate places. [2022-11-21 17:11:14,667 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 245 transitions, 547 flow [2022-11-21 17:11:14,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states 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 17:11:14,668 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:14,668 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] [2022-11-21 17:11:14,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:11:14,668 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:14,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:14,669 INFO L85 PathProgramCache]: Analyzing trace with hash -812553210, now seen corresponding path program 1 times [2022-11-21 17:11:14,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:14,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817363938] [2022-11-21 17:11:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:14,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:14,805 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 17:11:14,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:14,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817363938] [2022-11-21 17:11:14,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817363938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:14,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:14,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:14,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872332950] [2022-11-21 17:11:14,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:14,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:11:14,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:14,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:11:14,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:11:14,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 285 [2022-11-21 17:11:14,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 245 transitions, 547 flow. Second operand has 5 states, 5 states have (on average 245.6) internal successors, (1228), 5 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states 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 17:11:14,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:14,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 285 [2022-11-21 17:11:14,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:15,156 INFO L130 PetriNetUnfolder]: 95/947 cut-off events. [2022-11-21 17:11:15,156 INFO L131 PetriNetUnfolder]: For 38/42 co-relation queries the response was YES. [2022-11-21 17:11:15,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 947 events. 95/947 cut-off events. For 38/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6769 event pairs, 30 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 1151. Up to 90 conditions per place. [2022-11-21 17:11:15,184 INFO L137 encePairwiseOnDemand]: 278/285 looper letters, 44 selfloop transitions, 7 changer transitions 0/266 dead transitions. [2022-11-21 17:11:15,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 266 transitions, 703 flow [2022-11-21 17:11:15,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:11:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:11:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1510 transitions. [2022-11-21 17:11:15,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8830409356725146 [2022-11-21 17:11:15,189 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1510 transitions. [2022-11-21 17:11:15,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1510 transitions. [2022-11-21 17:11:15,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:15,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1510 transitions. [2022-11-21 17:11:15,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.66666666666666) internal successors, (1510), 6 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states 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 17:11:15,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:15,199 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:15,199 INFO L175 Difference]: Start difference. First operand has 254 places, 245 transitions, 547 flow. Second operand 6 states and 1510 transitions. [2022-11-21 17:11:15,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 266 transitions, 703 flow [2022-11-21 17:11:15,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 266 transitions, 689 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-21 17:11:15,214 INFO L231 Difference]: Finished difference. Result has 255 places, 248 transitions, 568 flow [2022-11-21 17:11:15,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=255, PETRI_TRANSITIONS=248} [2022-11-21 17:11:15,216 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 10 predicate places. [2022-11-21 17:11:15,216 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 248 transitions, 568 flow [2022-11-21 17:11:15,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.6) internal successors, (1228), 5 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states 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 17:11:15,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:15,217 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] [2022-11-21 17:11:15,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:11:15,218 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:15,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:15,218 INFO L85 PathProgramCache]: Analyzing trace with hash 2069331958, now seen corresponding path program 1 times [2022-11-21 17:11:15,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:15,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931352064] [2022-11-21 17:11:15,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:15,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:15,371 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 17:11:15,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:15,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931352064] [2022-11-21 17:11:15,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931352064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:15,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:15,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:15,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010898580] [2022-11-21 17:11:15,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:15,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:15,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:15,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:15,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:15,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 285 [2022-11-21 17:11:15,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 248 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states 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 17:11:15,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:15,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 285 [2022-11-21 17:11:15,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:15,949 INFO L130 PetriNetUnfolder]: 375/1876 cut-off events. [2022-11-21 17:11:15,949 INFO L131 PetriNetUnfolder]: For 292/298 co-relation queries the response was YES. [2022-11-21 17:11:15,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 1876 events. 375/1876 cut-off events. For 292/298 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15481 event pairs, 4 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 2466. Up to 574 conditions per place. [2022-11-21 17:11:15,976 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 31 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-21 17:11:15,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 253 transitions, 654 flow [2022-11-21 17:11:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:11:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:11:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1501 transitions. [2022-11-21 17:11:15,983 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8777777777777778 [2022-11-21 17:11:15,983 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1501 transitions. [2022-11-21 17:11:15,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1501 transitions. [2022-11-21 17:11:15,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:15,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1501 transitions. [2022-11-21 17:11:15,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.16666666666666) internal successors, (1501), 6 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states 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 17:11:15,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:15,994 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:15,994 INFO L175 Difference]: Start difference. First operand has 255 places, 248 transitions, 568 flow. Second operand 6 states and 1501 transitions. [2022-11-21 17:11:15,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 253 transitions, 654 flow [2022-11-21 17:11:15,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 253 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:11:16,001 INFO L231 Difference]: Finished difference. Result has 258 places, 247 transitions, 573 flow [2022-11-21 17:11:16,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=573, PETRI_PLACES=258, PETRI_TRANSITIONS=247} [2022-11-21 17:11:16,002 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 13 predicate places. [2022-11-21 17:11:16,003 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 247 transitions, 573 flow [2022-11-21 17:11:16,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states 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 17:11:16,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:16,004 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] [2022-11-21 17:11:16,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:11:16,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:16,005 INFO L85 PathProgramCache]: Analyzing trace with hash -275217912, now seen corresponding path program 1 times [2022-11-21 17:11:16,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:16,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567645069] [2022-11-21 17:11:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:16,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:16,094 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 17:11:16,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:16,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567645069] [2022-11-21 17:11:16,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567645069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:16,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:16,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:11:16,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090068796] [2022-11-21 17:11:16,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:16,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:11:16,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:16,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:11:16,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:11:16,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-21 17:11:16,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 247 transitions, 573 flow. Second operand has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 17:11:16,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:16,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-21 17:11:16,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:16,623 INFO L130 PetriNetUnfolder]: 368/1772 cut-off events. [2022-11-21 17:11:16,624 INFO L131 PetriNetUnfolder]: For 369/629 co-relation queries the response was YES. [2022-11-21 17:11:16,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 1772 events. 368/1772 cut-off events. For 369/629 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16893 event pairs, 144 based on Foata normal form. 0/1356 useless extension candidates. Maximal degree in co-relation 2500. Up to 338 conditions per place. [2022-11-21 17:11:16,656 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 35 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2022-11-21 17:11:16,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 259 transitions, 679 flow [2022-11-21 17:11:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:11:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:11:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1029 transitions. [2022-11-21 17:11:16,659 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9026315789473685 [2022-11-21 17:11:16,660 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1029 transitions. [2022-11-21 17:11:16,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1029 transitions. [2022-11-21 17:11:16,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:16,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1029 transitions. [2022-11-21 17:11:16,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states 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 17:11:16,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:16,667 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:16,667 INFO L175 Difference]: Start difference. First operand has 258 places, 247 transitions, 573 flow. Second operand 4 states and 1029 transitions. [2022-11-21 17:11:16,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 259 transitions, 679 flow [2022-11-21 17:11:16,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 259 transitions, 670 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:11:16,674 INFO L231 Difference]: Finished difference. Result has 259 places, 248 transitions, 588 flow [2022-11-21 17:11:16,674 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=259, PETRI_TRANSITIONS=248} [2022-11-21 17:11:16,675 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 14 predicate places. [2022-11-21 17:11:16,675 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 248 transitions, 588 flow [2022-11-21 17:11:16,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 17:11:16,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:16,676 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] [2022-11-21 17:11:16,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:11:16,676 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:16,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:16,677 INFO L85 PathProgramCache]: Analyzing trace with hash 477347057, now seen corresponding path program 1 times [2022-11-21 17:11:16,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:16,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818723602] [2022-11-21 17:11:16,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:16,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:16,743 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 17:11:16,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:16,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818723602] [2022-11-21 17:11:16,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818723602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:16,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:16,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:11:16,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362039334] [2022-11-21 17:11:16,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:16,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:11:16,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:16,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:11:16,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:11:16,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-21 17:11:16,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 248 transitions, 588 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states 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 17:11:16,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:16,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-21 17:11:16,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:17,115 INFO L130 PetriNetUnfolder]: 129/1067 cut-off events. [2022-11-21 17:11:17,115 INFO L131 PetriNetUnfolder]: For 168/442 co-relation queries the response was YES. [2022-11-21 17:11:17,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 1067 events. 129/1067 cut-off events. For 168/442 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8311 event pairs, 48 based on Foata normal form. 5/912 useless extension candidates. Maximal degree in co-relation 1351. Up to 121 conditions per place. [2022-11-21 17:11:17,151 INFO L137 encePairwiseOnDemand]: 281/285 looper letters, 36 selfloop transitions, 3 changer transitions 0/259 dead transitions. [2022-11-21 17:11:17,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 259 transitions, 691 flow [2022-11-21 17:11:17,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:11:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:11:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1028 transitions. [2022-11-21 17:11:17,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9017543859649123 [2022-11-21 17:11:17,154 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1028 transitions. [2022-11-21 17:11:17,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1028 transitions. [2022-11-21 17:11:17,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:17,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1028 transitions. [2022-11-21 17:11:17,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states 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 17:11:17,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:17,160 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:17,160 INFO L175 Difference]: Start difference. First operand has 259 places, 248 transitions, 588 flow. Second operand 4 states and 1028 transitions. [2022-11-21 17:11:17,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 259 transitions, 691 flow [2022-11-21 17:11:17,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 259 transitions, 689 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:11:17,166 INFO L231 Difference]: Finished difference. Result has 261 places, 247 transitions, 586 flow [2022-11-21 17:11:17,167 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=586, PETRI_PLACES=261, PETRI_TRANSITIONS=247} [2022-11-21 17:11:17,167 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 16 predicate places. [2022-11-21 17:11:17,167 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 247 transitions, 586 flow [2022-11-21 17:11:17,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states 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 17:11:17,169 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:17,169 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:17,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:11:17,169 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:17,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:17,170 INFO L85 PathProgramCache]: Analyzing trace with hash 839494952, now seen corresponding path program 1 times [2022-11-21 17:11:17,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:17,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366459691] [2022-11-21 17:11:17,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:17,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:17,296 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 17:11:17,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:17,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366459691] [2022-11-21 17:11:17,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366459691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:17,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:17,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:11:17,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800301121] [2022-11-21 17:11:17,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:17,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:11:17,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:17,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:11:17,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:11:17,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 285 [2022-11-21 17:11:17,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 247 transitions, 586 flow. Second operand has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 17:11:17,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:17,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 285 [2022-11-21 17:11:17,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:17,730 INFO L130 PetriNetUnfolder]: 172/1104 cut-off events. [2022-11-21 17:11:17,730 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-11-21 17:11:17,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 1104 events. 172/1104 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8037 event pairs, 2 based on Foata normal form. 0/1011 useless extension candidates. Maximal degree in co-relation 1715. Up to 157 conditions per place. [2022-11-21 17:11:17,763 INFO L137 encePairwiseOnDemand]: 275/285 looper letters, 41 selfloop transitions, 11 changer transitions 0/263 dead transitions. [2022-11-21 17:11:17,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 263 transitions, 736 flow [2022-11-21 17:11:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:11:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:11:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1962 transitions. [2022-11-21 17:11:17,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8605263157894737 [2022-11-21 17:11:17,769 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1962 transitions. [2022-11-21 17:11:17,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1962 transitions. [2022-11-21 17:11:17,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:17,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1962 transitions. [2022-11-21 17:11:17,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.25) internal successors, (1962), 8 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states 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 17:11:17,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 17:11:17,780 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 17:11:17,780 INFO L175 Difference]: Start difference. First operand has 261 places, 247 transitions, 586 flow. Second operand 8 states and 1962 transitions. [2022-11-21 17:11:17,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 263 transitions, 736 flow [2022-11-21 17:11:17,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 263 transitions, 731 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:11:17,786 INFO L231 Difference]: Finished difference. Result has 268 places, 248 transitions, 617 flow [2022-11-21 17:11:17,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=617, PETRI_PLACES=268, PETRI_TRANSITIONS=248} [2022-11-21 17:11:17,788 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 23 predicate places. [2022-11-21 17:11:17,788 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 248 transitions, 617 flow [2022-11-21 17:11:17,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 17:11:17,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:17,789 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:17,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:11:17,789 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:17,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:17,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1912857664, now seen corresponding path program 1 times [2022-11-21 17:11:17,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:17,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305069322] [2022-11-21 17:11:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:17,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:17,881 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 17:11:17,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:17,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305069322] [2022-11-21 17:11:17,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305069322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:17,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:17,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:17,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604004820] [2022-11-21 17:11:17,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:17,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:17,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:17,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:17,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:17,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 285 [2022-11-21 17:11:17,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 248 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 246.33333333333334) internal successors, (1478), 6 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states 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 17:11:17,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:17,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 285 [2022-11-21 17:11:17,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:18,490 INFO L130 PetriNetUnfolder]: 277/1708 cut-off events. [2022-11-21 17:11:18,490 INFO L131 PetriNetUnfolder]: For 212/260 co-relation queries the response was YES. [2022-11-21 17:11:18,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 1708 events. 277/1708 cut-off events. For 212/260 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14003 event pairs, 6 based on Foata normal form. 0/1464 useless extension candidates. Maximal degree in co-relation 2179. Up to 427 conditions per place. [2022-11-21 17:11:18,542 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 30 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-21 17:11:18,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 254 transitions, 706 flow [2022-11-21 17:11:18,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:11:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:11:18,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1500 transitions. [2022-11-21 17:11:18,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8771929824561403 [2022-11-21 17:11:18,548 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1500 transitions. [2022-11-21 17:11:18,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1500 transitions. [2022-11-21 17:11:18,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:18,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1500 transitions. [2022-11-21 17:11:18,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 17:11:18,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:18,559 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:18,559 INFO L175 Difference]: Start difference. First operand has 268 places, 248 transitions, 617 flow. Second operand 6 states and 1500 transitions. [2022-11-21 17:11:18,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 254 transitions, 706 flow [2022-11-21 17:11:18,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 254 transitions, 697 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:11:18,567 INFO L231 Difference]: Finished difference. Result has 268 places, 247 transitions, 616 flow [2022-11-21 17:11:18,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=616, PETRI_PLACES=268, PETRI_TRANSITIONS=247} [2022-11-21 17:11:18,568 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 23 predicate places. [2022-11-21 17:11:18,569 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 247 transitions, 616 flow [2022-11-21 17:11:18,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.33333333333334) internal successors, (1478), 6 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states 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 17:11:18,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:18,570 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] [2022-11-21 17:11:18,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:11:18,570 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:18,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:18,571 INFO L85 PathProgramCache]: Analyzing trace with hash 254540471, now seen corresponding path program 1 times [2022-11-21 17:11:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:18,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62412419] [2022-11-21 17:11:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:18,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:18,739 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 17:11:18,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:18,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62412419] [2022-11-21 17:11:18,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62412419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:18,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:18,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:11:18,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637608841] [2022-11-21 17:11:18,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:18,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:11:18,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:18,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:11:18,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:11:18,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 285 [2022-11-21 17:11:18,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 247 transitions, 616 flow. Second operand has 8 states, 8 states have (on average 241.125) internal successors, (1929), 8 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states 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 17:11:18,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:18,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 285 [2022-11-21 17:11:18,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:19,359 INFO L130 PetriNetUnfolder]: 164/1654 cut-off events. [2022-11-21 17:11:19,360 INFO L131 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES. [2022-11-21 17:11:19,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2463 conditions, 1654 events. 164/1654 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13959 event pairs, 8 based on Foata normal form. 0/1497 useless extension candidates. Maximal degree in co-relation 2293. Up to 147 conditions per place. [2022-11-21 17:11:19,410 INFO L137 encePairwiseOnDemand]: 275/285 looper letters, 43 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2022-11-21 17:11:19,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 264 transitions, 778 flow [2022-11-21 17:11:19,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:11:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:11:19,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1964 transitions. [2022-11-21 17:11:19,417 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8614035087719298 [2022-11-21 17:11:19,417 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1964 transitions. [2022-11-21 17:11:19,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1964 transitions. [2022-11-21 17:11:19,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:19,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1964 transitions. [2022-11-21 17:11:19,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.5) internal successors, (1964), 8 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states 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 17:11:19,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 17:11:19,430 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 17:11:19,430 INFO L175 Difference]: Start difference. First operand has 268 places, 247 transitions, 616 flow. Second operand 8 states and 1964 transitions. [2022-11-21 17:11:19,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 264 transitions, 778 flow [2022-11-21 17:11:19,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 264 transitions, 761 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:11:19,438 INFO L231 Difference]: Finished difference. Result has 273 places, 248 transitions, 637 flow [2022-11-21 17:11:19,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=273, PETRI_TRANSITIONS=248} [2022-11-21 17:11:19,440 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 28 predicate places. [2022-11-21 17:11:19,440 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 248 transitions, 637 flow [2022-11-21 17:11:19,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.125) internal successors, (1929), 8 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states 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 17:11:19,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:19,442 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] [2022-11-21 17:11:19,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:11:19,442 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:19,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash 885565827, now seen corresponding path program 1 times [2022-11-21 17:11:19,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:19,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930705118] [2022-11-21 17:11:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:19,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:19,544 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 17:11:19,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:19,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930705118] [2022-11-21 17:11:19,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930705118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:19,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:19,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:19,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863310435] [2022-11-21 17:11:19,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:19,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:11:19,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:19,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:11:19,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:11:19,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 285 [2022-11-21 17:11:19,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 248 transitions, 637 flow. Second operand has 5 states, 5 states have (on average 245.8) internal successors, (1229), 5 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states 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 17:11:19,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:19,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 285 [2022-11-21 17:11:19,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:20,041 INFO L130 PetriNetUnfolder]: 157/1119 cut-off events. [2022-11-21 17:11:20,042 INFO L131 PetriNetUnfolder]: For 172/514 co-relation queries the response was YES. [2022-11-21 17:11:20,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 1119 events. 157/1119 cut-off events. For 172/514 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9063 event pairs, 60 based on Foata normal form. 0/958 useless extension candidates. Maximal degree in co-relation 1506. Up to 153 conditions per place. [2022-11-21 17:11:20,073 INFO L137 encePairwiseOnDemand]: 278/285 looper letters, 43 selfloop transitions, 7 changer transitions 0/268 dead transitions. [2022-11-21 17:11:20,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 268 transitions, 788 flow [2022-11-21 17:11:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:11:20,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:11:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1509 transitions. [2022-11-21 17:11:20,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8824561403508772 [2022-11-21 17:11:20,078 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1509 transitions. [2022-11-21 17:11:20,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1509 transitions. [2022-11-21 17:11:20,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:20,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1509 transitions. [2022-11-21 17:11:20,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.5) internal successors, (1509), 6 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states 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 17:11:20,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:20,086 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:20,086 INFO L175 Difference]: Start difference. First operand has 273 places, 248 transitions, 637 flow. Second operand 6 states and 1509 transitions. [2022-11-21 17:11:20,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 268 transitions, 788 flow [2022-11-21 17:11:20,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 268 transitions, 774 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-21 17:11:20,093 INFO L231 Difference]: Finished difference. Result has 274 places, 251 transitions, 658 flow [2022-11-21 17:11:20,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=658, PETRI_PLACES=274, PETRI_TRANSITIONS=251} [2022-11-21 17:11:20,094 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 29 predicate places. [2022-11-21 17:11:20,094 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 251 transitions, 658 flow [2022-11-21 17:11:20,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.8) internal successors, (1229), 5 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states 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 17:11:20,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:20,095 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] [2022-11-21 17:11:20,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:11:20,095 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:20,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:20,096 INFO L85 PathProgramCache]: Analyzing trace with hash -426772261, now seen corresponding path program 1 times [2022-11-21 17:11:20,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:20,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637826957] [2022-11-21 17:11:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:20,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:20,266 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 17:11:20,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:20,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637826957] [2022-11-21 17:11:20,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637826957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:20,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:20,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:20,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490514548] [2022-11-21 17:11:20,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:20,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:20,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:20,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:20,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:20,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 285 [2022-11-21 17:11:20,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 251 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 17:11:20,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:20,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 285 [2022-11-21 17:11:20,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:20,692 INFO L130 PetriNetUnfolder]: 114/894 cut-off events. [2022-11-21 17:11:20,693 INFO L131 PetriNetUnfolder]: For 132/136 co-relation queries the response was YES. [2022-11-21 17:11:20,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 894 events. 114/894 cut-off events. For 132/136 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6288 event pairs, 58 based on Foata normal form. 3/824 useless extension candidates. Maximal degree in co-relation 1413. Up to 153 conditions per place. [2022-11-21 17:11:20,726 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 49 selfloop transitions, 7 changer transitions 0/267 dead transitions. [2022-11-21 17:11:20,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 267 transitions, 817 flow [2022-11-21 17:11:20,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:11:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:11:20,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1712 transitions. [2022-11-21 17:11:20,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8581453634085213 [2022-11-21 17:11:20,732 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1712 transitions. [2022-11-21 17:11:20,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1712 transitions. [2022-11-21 17:11:20,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:20,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1712 transitions. [2022-11-21 17:11:20,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.57142857142858) internal successors, (1712), 7 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states 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 17:11:20,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 17:11:20,743 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 17:11:20,743 INFO L175 Difference]: Start difference. First operand has 274 places, 251 transitions, 658 flow. Second operand 7 states and 1712 transitions. [2022-11-21 17:11:20,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 267 transitions, 817 flow [2022-11-21 17:11:20,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 267 transitions, 811 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:11:20,751 INFO L231 Difference]: Finished difference. Result has 281 places, 254 transitions, 688 flow [2022-11-21 17:11:20,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=688, PETRI_PLACES=281, PETRI_TRANSITIONS=254} [2022-11-21 17:11:20,754 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 36 predicate places. [2022-11-21 17:11:20,754 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 254 transitions, 688 flow [2022-11-21 17:11:20,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 17:11:20,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:20,756 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] [2022-11-21 17:11:20,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:11:20,756 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash 381992749, now seen corresponding path program 1 times [2022-11-21 17:11:20,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:20,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522574743] [2022-11-21 17:11:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:20,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:20,929 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 17:11:20,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:20,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522574743] [2022-11-21 17:11:20,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522574743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:20,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:20,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:20,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068377967] [2022-11-21 17:11:20,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:20,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:20,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:20,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:20,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:20,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 285 [2022-11-21 17:11:20,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 254 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states 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 17:11:20,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:20,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 285 [2022-11-21 17:11:20,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:21,357 INFO L130 PetriNetUnfolder]: 108/885 cut-off events. [2022-11-21 17:11:21,358 INFO L131 PetriNetUnfolder]: For 146/150 co-relation queries the response was YES. [2022-11-21 17:11:21,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 885 events. 108/885 cut-off events. For 146/150 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6228 event pairs, 46 based on Foata normal form. 3/829 useless extension candidates. Maximal degree in co-relation 1456. Up to 126 conditions per place. [2022-11-21 17:11:21,390 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 55 selfloop transitions, 8 changer transitions 0/276 dead transitions. [2022-11-21 17:11:21,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 276 transitions, 890 flow [2022-11-21 17:11:21,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:11:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:11:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1718 transitions. [2022-11-21 17:11:21,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8611528822055138 [2022-11-21 17:11:21,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1718 transitions. [2022-11-21 17:11:21,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1718 transitions. [2022-11-21 17:11:21,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:21,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1718 transitions. [2022-11-21 17:11:21,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 245.42857142857142) internal successors, (1718), 7 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states 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 17:11:21,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 17:11:21,407 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 17:11:21,408 INFO L175 Difference]: Start difference. First operand has 281 places, 254 transitions, 688 flow. Second operand 7 states and 1718 transitions. [2022-11-21 17:11:21,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 276 transitions, 890 flow [2022-11-21 17:11:21,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 276 transitions, 888 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:11:21,418 INFO L231 Difference]: Finished difference. Result has 289 places, 258 transitions, 735 flow [2022-11-21 17:11:21,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=735, PETRI_PLACES=289, PETRI_TRANSITIONS=258} [2022-11-21 17:11:21,419 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 44 predicate places. [2022-11-21 17:11:21,419 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 258 transitions, 735 flow [2022-11-21 17:11:21,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states 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 17:11:21,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:21,420 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] [2022-11-21 17:11:21,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:11:21,421 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:21,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:21,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1448342929, now seen corresponding path program 1 times [2022-11-21 17:11:21,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:21,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802918433] [2022-11-21 17:11:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:21,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,498 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 17:11:21,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:21,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802918433] [2022-11-21 17:11:21,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802918433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:21,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:21,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:11:21,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815003162] [2022-11-21 17:11:21,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:21,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:11:21,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:21,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:11:21,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:11:21,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-21 17:11:21,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 258 transitions, 735 flow. Second operand has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states 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 17:11:21,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:21,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-21 17:11:21,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:22,114 INFO L130 PetriNetUnfolder]: 354/1760 cut-off events. [2022-11-21 17:11:22,115 INFO L131 PetriNetUnfolder]: For 526/784 co-relation queries the response was YES. [2022-11-21 17:11:22,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2757 conditions, 1760 events. 354/1760 cut-off events. For 526/784 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 17016 event pairs, 144 based on Foata normal form. 13/1394 useless extension candidates. Maximal degree in co-relation 2669. Up to 316 conditions per place. [2022-11-21 17:11:22,147 INFO L137 encePairwiseOnDemand]: 281/285 looper letters, 35 selfloop transitions, 3 changer transitions 0/268 dead transitions. [2022-11-21 17:11:22,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 268 transitions, 831 flow [2022-11-21 17:11:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:11:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:11:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1027 transitions. [2022-11-21 17:11:22,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9008771929824562 [2022-11-21 17:11:22,157 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1027 transitions. [2022-11-21 17:11:22,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1027 transitions. [2022-11-21 17:11:22,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:22,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1027 transitions. [2022-11-21 17:11:22,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 256.75) internal successors, (1027), 4 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states 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 17:11:22,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:22,164 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:22,164 INFO L175 Difference]: Start difference. First operand has 289 places, 258 transitions, 735 flow. Second operand 4 states and 1027 transitions. [2022-11-21 17:11:22,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 268 transitions, 831 flow [2022-11-21 17:11:22,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 268 transitions, 829 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:11:22,173 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 733 flow [2022-11-21 17:11:22,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=733, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2022-11-21 17:11:22,175 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 46 predicate places. [2022-11-21 17:11:22,175 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 733 flow [2022-11-21 17:11:22,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states 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 17:11:22,176 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:22,176 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] [2022-11-21 17:11:22,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 17:11:22,177 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:22,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:22,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2040986715, now seen corresponding path program 1 times [2022-11-21 17:11:22,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:22,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762614782] [2022-11-21 17:11:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:22,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:22,353 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 17:11:22,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:22,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762614782] [2022-11-21 17:11:22,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762614782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:22,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:22,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:11:22,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497846130] [2022-11-21 17:11:22,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:22,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:11:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:22,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:11:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:11:22,359 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 285 [2022-11-21 17:11:22,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 733 flow. Second operand has 8 states, 8 states have (on average 241.125) internal successors, (1929), 8 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states 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 17:11:22,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:22,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 285 [2022-11-21 17:11:22,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:23,036 INFO L130 PetriNetUnfolder]: 241/1764 cut-off events. [2022-11-21 17:11:23,036 INFO L131 PetriNetUnfolder]: For 311/496 co-relation queries the response was YES. [2022-11-21 17:11:23,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 1764 events. 241/1764 cut-off events. For 311/496 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15515 event pairs, 7 based on Foata normal form. 2/1588 useless extension candidates. Maximal degree in co-relation 2595. Up to 209 conditions per place. [2022-11-21 17:11:23,084 INFO L137 encePairwiseOnDemand]: 275/285 looper letters, 40 selfloop transitions, 11 changer transitions 0/272 dead transitions. [2022-11-21 17:11:23,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 272 transitions, 878 flow [2022-11-21 17:11:23,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:11:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:11:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1961 transitions. [2022-11-21 17:11:23,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8600877192982456 [2022-11-21 17:11:23,091 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1961 transitions. [2022-11-21 17:11:23,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1961 transitions. [2022-11-21 17:11:23,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:23,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1961 transitions. [2022-11-21 17:11:23,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.125) internal successors, (1961), 8 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states 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 17:11:23,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 17:11:23,102 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 17:11:23,102 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 733 flow. Second operand 8 states and 1961 transitions. [2022-11-21 17:11:23,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 272 transitions, 878 flow [2022-11-21 17:11:23,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 272 transitions, 873 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:11:23,110 INFO L231 Difference]: Finished difference. Result has 298 places, 258 transitions, 764 flow [2022-11-21 17:11:23,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=298, PETRI_TRANSITIONS=258} [2022-11-21 17:11:23,112 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 53 predicate places. [2022-11-21 17:11:23,112 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 258 transitions, 764 flow [2022-11-21 17:11:23,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.125) internal successors, (1929), 8 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states 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 17:11:23,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:23,113 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] [2022-11-21 17:11:23,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:11:23,113 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:23,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1948956992, now seen corresponding path program 1 times [2022-11-21 17:11:23,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:23,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025960442] [2022-11-21 17:11:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:23,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:23,215 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 17:11:23,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:23,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025960442] [2022-11-21 17:11:23,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025960442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:23,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:23,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:23,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758644403] [2022-11-21 17:11:23,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:23,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:23,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:23,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:23,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:23,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 285 [2022-11-21 17:11:23,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 258 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 246.5) internal successors, (1479), 6 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states 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 17:11:23,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:23,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 285 [2022-11-21 17:11:23,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:24,012 INFO L130 PetriNetUnfolder]: 448/2549 cut-off events. [2022-11-21 17:11:24,012 INFO L131 PetriNetUnfolder]: For 594/600 co-relation queries the response was YES. [2022-11-21 17:11:24,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 2549 events. 448/2549 cut-off events. For 594/600 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 23232 event pairs, 4 based on Foata normal form. 0/2131 useless extension candidates. Maximal degree in co-relation 3719. Up to 737 conditions per place. [2022-11-21 17:11:24,050 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 29 selfloop transitions, 5 changer transitions 0/263 dead transitions. [2022-11-21 17:11:24,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 263 transitions, 850 flow [2022-11-21 17:11:24,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:11:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:11:24,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1499 transitions. [2022-11-21 17:11:24,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.876608187134503 [2022-11-21 17:11:24,053 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1499 transitions. [2022-11-21 17:11:24,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1499 transitions. [2022-11-21 17:11:24,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:24,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1499 transitions. [2022-11-21 17:11:24,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.83333333333334) internal successors, (1499), 6 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states 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 17:11:24,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:24,061 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 17:11:24,061 INFO L175 Difference]: Start difference. First operand has 298 places, 258 transitions, 764 flow. Second operand 6 states and 1499 transitions. [2022-11-21 17:11:24,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 263 transitions, 850 flow [2022-11-21 17:11:24,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 263 transitions, 837 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:11:24,070 INFO L231 Difference]: Finished difference. Result has 298 places, 257 transitions, 763 flow [2022-11-21 17:11:24,071 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=763, PETRI_PLACES=298, PETRI_TRANSITIONS=257} [2022-11-21 17:11:24,072 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 53 predicate places. [2022-11-21 17:11:24,072 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 257 transitions, 763 flow [2022-11-21 17:11:24,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.5) internal successors, (1479), 6 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states 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 17:11:24,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:24,073 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] [2022-11-21 17:11:24,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:11:24,073 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:24,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1153922072, now seen corresponding path program 1 times [2022-11-21 17:11:24,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:24,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832191453] [2022-11-21 17:11:24,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:24,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:24,224 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 17:11:24,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:24,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832191453] [2022-11-21 17:11:24,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832191453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:24,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:24,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:11:24,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263451207] [2022-11-21 17:11:24,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:24,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:11:24,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:24,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:11:24,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:11:24,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 285 [2022-11-21 17:11:24,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 257 transitions, 763 flow. Second operand has 8 states, 8 states have (on average 241.25) internal successors, (1930), 8 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states 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 17:11:24,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:24,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 285 [2022-11-21 17:11:24,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:24,763 INFO L130 PetriNetUnfolder]: 205/1309 cut-off events. [2022-11-21 17:11:24,763 INFO L131 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2022-11-21 17:11:24,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 1309 events. 205/1309 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10163 event pairs, 2 based on Foata normal form. 0/1203 useless extension candidates. Maximal degree in co-relation 2316. Up to 195 conditions per place. [2022-11-21 17:11:24,808 INFO L137 encePairwiseOnDemand]: 275/285 looper letters, 42 selfloop transitions, 9 changer transitions 0/273 dead transitions. [2022-11-21 17:11:24,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 273 transitions, 912 flow [2022-11-21 17:11:24,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:11:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:11:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1963 transitions. [2022-11-21 17:11:24,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8609649122807017 [2022-11-21 17:11:24,815 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1963 transitions. [2022-11-21 17:11:24,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1963 transitions. [2022-11-21 17:11:24,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:24,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1963 transitions. [2022-11-21 17:11:24,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.375) internal successors, (1963), 8 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states 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 17:11:24,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 17:11:24,825 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 17:11:24,825 INFO L175 Difference]: Start difference. First operand has 298 places, 257 transitions, 763 flow. Second operand 8 states and 1963 transitions. [2022-11-21 17:11:24,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 273 transitions, 912 flow [2022-11-21 17:11:24,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 273 transitions, 903 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:11:24,835 INFO L231 Difference]: Finished difference. Result has 303 places, 258 transitions, 784 flow [2022-11-21 17:11:24,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=303, PETRI_TRANSITIONS=258} [2022-11-21 17:11:24,837 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 58 predicate places. [2022-11-21 17:11:24,837 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 258 transitions, 784 flow [2022-11-21 17:11:24,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.25) internal successors, (1930), 8 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states 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 17:11:24,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:24,838 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] [2022-11-21 17:11:24,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 17:11:24,839 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:24,839 INFO L85 PathProgramCache]: Analyzing trace with hash 533427139, now seen corresponding path program 1 times [2022-11-21 17:11:24,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:24,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642089797] [2022-11-21 17:11:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:24,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:24,908 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 17:11:24,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:24,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642089797] [2022-11-21 17:11:24,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642089797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:24,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:24,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:11:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804278339] [2022-11-21 17:11:24,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:24,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:11:24,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:11:24,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:11:24,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-21 17:11:24,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 258 transitions, 784 flow. Second operand has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 17:11:24,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:24,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-21 17:11:24,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:25,522 INFO L130 PetriNetUnfolder]: 437/2141 cut-off events. [2022-11-21 17:11:25,522 INFO L131 PetriNetUnfolder]: For 518/822 co-relation queries the response was YES. [2022-11-21 17:11:25,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3355 conditions, 2141 events. 437/2141 cut-off events. For 518/822 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21877 event pairs, 216 based on Foata normal form. 13/1689 useless extension candidates. Maximal degree in co-relation 3260. Up to 466 conditions per place. [2022-11-21 17:11:25,570 INFO L137 encePairwiseOnDemand]: 281/285 looper letters, 32 selfloop transitions, 3 changer transitions 0/268 dead transitions. [2022-11-21 17:11:25,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 268 transitions, 876 flow [2022-11-21 17:11:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:11:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:11:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1024 transitions. [2022-11-21 17:11:25,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8982456140350877 [2022-11-21 17:11:25,573 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1024 transitions. [2022-11-21 17:11:25,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1024 transitions. [2022-11-21 17:11:25,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:25,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1024 transitions. [2022-11-21 17:11:25,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states 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 17:11:25,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:25,580 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 17:11:25,580 INFO L175 Difference]: Start difference. First operand has 303 places, 258 transitions, 784 flow. Second operand 4 states and 1024 transitions. [2022-11-21 17:11:25,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 268 transitions, 876 flow [2022-11-21 17:11:25,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 268 transitions, 865 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 17:11:25,587 INFO L231 Difference]: Finished difference. Result has 301 places, 258 transitions, 782 flow [2022-11-21 17:11:25,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=301, PETRI_TRANSITIONS=258} [2022-11-21 17:11:25,588 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 56 predicate places. [2022-11-21 17:11:25,589 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 258 transitions, 782 flow [2022-11-21 17:11:25,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 17:11:25,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:25,589 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] [2022-11-21 17:11:25,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 17:11:25,590 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:25,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:25,590 INFO L85 PathProgramCache]: Analyzing trace with hash 590521788, now seen corresponding path program 1 times [2022-11-21 17:11:25,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:25,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069959925] [2022-11-21 17:11:25,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:25,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:25,710 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 17:11:25,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:25,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069959925] [2022-11-21 17:11:25,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069959925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:25,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:25,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:25,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782629017] [2022-11-21 17:11:25,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:25,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:25,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:25,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:25,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:25,714 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 285 [2022-11-21 17:11:25,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 258 transitions, 782 flow. Second operand has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states 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 17:11:25,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:25,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 285 [2022-11-21 17:11:25,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:26,414 INFO L130 PetriNetUnfolder]: 210/1103 cut-off events. [2022-11-21 17:11:26,415 INFO L131 PetriNetUnfolder]: For 369/668 co-relation queries the response was YES. [2022-11-21 17:11:26,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 1103 events. 210/1103 cut-off events. For 369/668 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9383 event pairs, 116 based on Foata normal form. 5/960 useless extension candidates. Maximal degree in co-relation 1870. Up to 271 conditions per place. [2022-11-21 17:11:26,470 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 48 selfloop transitions, 7 changer transitions 0/273 dead transitions. [2022-11-21 17:11:26,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 273 transitions, 936 flow [2022-11-21 17:11:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:11:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:11:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1711 transitions. [2022-11-21 17:11:26,475 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8576441102756892 [2022-11-21 17:11:26,476 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1711 transitions. [2022-11-21 17:11:26,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1711 transitions. [2022-11-21 17:11:26,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:26,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1711 transitions. [2022-11-21 17:11:26,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.42857142857142) internal successors, (1711), 7 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states 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 17:11:26,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 17:11:26,490 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 17:11:26,490 INFO L175 Difference]: Start difference. First operand has 301 places, 258 transitions, 782 flow. Second operand 7 states and 1711 transitions. [2022-11-21 17:11:26,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 273 transitions, 936 flow [2022-11-21 17:11:26,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 273 transitions, 931 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:11:26,501 INFO L231 Difference]: Finished difference. Result has 308 places, 261 transitions, 813 flow [2022-11-21 17:11:26,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=813, PETRI_PLACES=308, PETRI_TRANSITIONS=261} [2022-11-21 17:11:26,502 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 63 predicate places. [2022-11-21 17:11:26,502 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 261 transitions, 813 flow [2022-11-21 17:11:26,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states 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 17:11:26,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:26,503 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:26,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 17:11:26,504 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:26,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1853337258, now seen corresponding path program 1 times [2022-11-21 17:11:26,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:26,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108668016] [2022-11-21 17:11:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:26,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:26,667 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 17:11:26,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:26,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108668016] [2022-11-21 17:11:26,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108668016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:26,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:26,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:26,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113529076] [2022-11-21 17:11:26,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:26,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:26,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:26,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:26,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:26,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 285 [2022-11-21 17:11:26,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 261 transitions, 813 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states 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 17:11:26,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:26,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 285 [2022-11-21 17:11:26,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:27,277 INFO L130 PetriNetUnfolder]: 198/1086 cut-off events. [2022-11-21 17:11:27,277 INFO L131 PetriNetUnfolder]: For 386/671 co-relation queries the response was YES. [2022-11-21 17:11:27,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 1086 events. 198/1086 cut-off events. For 386/671 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9173 event pairs, 92 based on Foata normal form. 5/974 useless extension candidates. Maximal degree in co-relation 1948. Up to 222 conditions per place. [2022-11-21 17:11:27,331 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 54 selfloop transitions, 8 changer transitions 0/282 dead transitions. [2022-11-21 17:11:27,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 282 transitions, 1010 flow [2022-11-21 17:11:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:11:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:11:27,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1717 transitions. [2022-11-21 17:11:27,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8606516290726817 [2022-11-21 17:11:27,335 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1717 transitions. [2022-11-21 17:11:27,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1717 transitions. [2022-11-21 17:11:27,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:27,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1717 transitions. [2022-11-21 17:11:27,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 245.28571428571428) internal successors, (1717), 7 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states 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 17:11:27,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 17:11:27,342 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 17:11:27,342 INFO L175 Difference]: Start difference. First operand has 308 places, 261 transitions, 813 flow. Second operand 7 states and 1717 transitions. [2022-11-21 17:11:27,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 282 transitions, 1010 flow [2022-11-21 17:11:27,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 282 transitions, 1008 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:11:27,351 INFO L231 Difference]: Finished difference. Result has 316 places, 265 transitions, 860 flow [2022-11-21 17:11:27,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=860, PETRI_PLACES=316, PETRI_TRANSITIONS=265} [2022-11-21 17:11:27,352 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 71 predicate places. [2022-11-21 17:11:27,352 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 265 transitions, 860 flow [2022-11-21 17:11:27,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states 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 17:11:27,353 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:27,353 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] [2022-11-21 17:11:27,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 17:11:27,354 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:27,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1116327269, now seen corresponding path program 1 times [2022-11-21 17:11:27,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:27,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89765314] [2022-11-21 17:11:27,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:27,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:27,462 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 17:11:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:27,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89765314] [2022-11-21 17:11:27,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89765314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:27,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:27,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:11:27,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931710426] [2022-11-21 17:11:27,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:27,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:11:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:27,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:11:27,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:11:27,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 285 [2022-11-21 17:11:27,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 265 transitions, 860 flow. Second operand has 8 states, 8 states have (on average 241.25) internal successors, (1930), 8 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states 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 17:11:27,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:27,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 285 [2022-11-21 17:11:27,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:28,241 INFO L130 PetriNetUnfolder]: 477/2445 cut-off events. [2022-11-21 17:11:28,242 INFO L131 PetriNetUnfolder]: For 654/800 co-relation queries the response was YES. [2022-11-21 17:11:28,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4094 conditions, 2445 events. 477/2445 cut-off events. For 654/800 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 24437 event pairs, 2 based on Foata normal form. 0/2035 useless extension candidates. Maximal degree in co-relation 3626. Up to 486 conditions per place. [2022-11-21 17:11:28,298 INFO L137 encePairwiseOnDemand]: 275/285 looper letters, 38 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2022-11-21 17:11:28,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 279 transitions, 990 flow [2022-11-21 17:11:28,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:11:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:11:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1960 transitions. [2022-11-21 17:11:28,302 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8596491228070176 [2022-11-21 17:11:28,302 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1960 transitions. [2022-11-21 17:11:28,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1960 transitions. [2022-11-21 17:11:28,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:28,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1960 transitions. [2022-11-21 17:11:28,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:11:28,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 17:11:28,311 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 17:11:28,311 INFO L175 Difference]: Start difference. First operand has 316 places, 265 transitions, 860 flow. Second operand 8 states and 1960 transitions. [2022-11-21 17:11:28,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 279 transitions, 990 flow [2022-11-21 17:11:28,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 279 transitions, 990 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:11:28,320 INFO L231 Difference]: Finished difference. Result has 325 places, 266 transitions, 890 flow [2022-11-21 17:11:28,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=890, PETRI_PLACES=325, PETRI_TRANSITIONS=266} [2022-11-21 17:11:28,321 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 80 predicate places. [2022-11-21 17:11:28,322 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 266 transitions, 890 flow [2022-11-21 17:11:28,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.25) internal successors, (1930), 8 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states 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 17:11:28,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:28,323 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 17:11:28,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 17:11:28,323 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:28,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:28,324 INFO L85 PathProgramCache]: Analyzing trace with hash 246407830, now seen corresponding path program 1 times [2022-11-21 17:11:28,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:28,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118658804] [2022-11-21 17:11:28,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:28,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:28,465 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 17:11:28,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:28,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118658804] [2022-11-21 17:11:28,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118658804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:28,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:28,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:11:28,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866168424] [2022-11-21 17:11:28,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:28,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:11:28,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:28,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:11:28,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:11:28,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 285 [2022-11-21 17:11:28,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 266 transitions, 890 flow. Second operand has 8 states, 8 states have (on average 241.375) internal successors, (1931), 8 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states 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 17:11:28,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:28,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 285 [2022-11-21 17:11:28,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:29,178 INFO L130 PetriNetUnfolder]: 399/2339 cut-off events. [2022-11-21 17:11:29,178 INFO L131 PetriNetUnfolder]: For 710/833 co-relation queries the response was YES. [2022-11-21 17:11:29,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 2339 events. 399/2339 cut-off events. For 710/833 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22951 event pairs, 2 based on Foata normal form. 0/2019 useless extension candidates. Maximal degree in co-relation 3554. Up to 432 conditions per place. [2022-11-21 17:11:29,206 INFO L137 encePairwiseOnDemand]: 275/285 looper letters, 41 selfloop transitions, 9 changer transitions 0/282 dead transitions. [2022-11-21 17:11:29,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 282 transitions, 1037 flow [2022-11-21 17:11:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:11:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:11:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1962 transitions. [2022-11-21 17:11:29,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8605263157894737 [2022-11-21 17:11:29,209 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1962 transitions. [2022-11-21 17:11:29,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1962 transitions. [2022-11-21 17:11:29,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:29,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1962 transitions. [2022-11-21 17:11:29,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.25) internal successors, (1962), 8 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states 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 17:11:29,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 17:11:29,218 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 17:11:29,218 INFO L175 Difference]: Start difference. First operand has 325 places, 266 transitions, 890 flow. Second operand 8 states and 1962 transitions. [2022-11-21 17:11:29,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 282 transitions, 1037 flow [2022-11-21 17:11:29,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 282 transitions, 1028 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:11:29,228 INFO L231 Difference]: Finished difference. Result has 330 places, 267 transitions, 911 flow [2022-11-21 17:11:29,229 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=330, PETRI_TRANSITIONS=267} [2022-11-21 17:11:29,229 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 85 predicate places. [2022-11-21 17:11:29,229 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 267 transitions, 911 flow [2022-11-21 17:11:29,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.375) internal successors, (1931), 8 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states 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 17:11:29,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:29,231 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:29,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 17:11:29,231 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:29,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:29,231 INFO L85 PathProgramCache]: Analyzing trace with hash 347698298, now seen corresponding path program 1 times [2022-11-21 17:11:29,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:29,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141973436] [2022-11-21 17:11:29,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:29,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:29,345 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 17:11:29,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:29,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141973436] [2022-11-21 17:11:29,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141973436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:29,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:29,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:29,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820539330] [2022-11-21 17:11:29,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:29,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:29,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:29,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:29,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 285 [2022-11-21 17:11:29,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 267 transitions, 911 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states 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 17:11:29,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:29,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 285 [2022-11-21 17:11:29,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:30,044 INFO L130 PetriNetUnfolder]: 653/2286 cut-off events. [2022-11-21 17:11:30,044 INFO L131 PetriNetUnfolder]: For 1028/1321 co-relation queries the response was YES. [2022-11-21 17:11:30,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4397 conditions, 2286 events. 653/2286 cut-off events. For 1028/1321 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 25634 event pairs, 348 based on Foata normal form. 18/1810 useless extension candidates. Maximal degree in co-relation 4291. Up to 741 conditions per place. [2022-11-21 17:11:30,079 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 40 selfloop transitions, 7 changer transitions 4/281 dead transitions. [2022-11-21 17:11:30,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 281 transitions, 1049 flow [2022-11-21 17:11:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:11:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:11:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1710 transitions. [2022-11-21 17:11:30,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-21 17:11:30,083 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1710 transitions. [2022-11-21 17:11:30,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1710 transitions. [2022-11-21 17:11:30,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:30,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1710 transitions. [2022-11-21 17:11:30,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.28571428571428) internal successors, (1710), 7 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states 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 17:11:30,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 17:11:30,091 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 17:11:30,091 INFO L175 Difference]: Start difference. First operand has 330 places, 267 transitions, 911 flow. Second operand 7 states and 1710 transitions. [2022-11-21 17:11:30,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 281 transitions, 1049 flow [2022-11-21 17:11:30,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 281 transitions, 1038 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 17:11:30,102 INFO L231 Difference]: Finished difference. Result has 334 places, 270 transitions, 936 flow [2022-11-21 17:11:30,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=936, PETRI_PLACES=334, PETRI_TRANSITIONS=270} [2022-11-21 17:11:30,103 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 89 predicate places. [2022-11-21 17:11:30,103 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 270 transitions, 936 flow [2022-11-21 17:11:30,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states 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 17:11:30,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:11:30,104 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] [2022-11-21 17:11:30,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 17:11:30,105 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 17:11:30,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1379223574, now seen corresponding path program 1 times [2022-11-21 17:11:30,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:30,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208410923] [2022-11-21 17:11:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:30,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,216 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 17:11:30,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:30,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208410923] [2022-11-21 17:11:30,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208410923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:30,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:30,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:11:30,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344293101] [2022-11-21 17:11:30,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:30,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:30,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:30,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:30,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:30,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 285 [2022-11-21 17:11:30,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 270 transitions, 936 flow. Second operand has 6 states, 6 states have (on average 240.83333333333334) internal successors, (1445), 6 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states 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 17:11:30,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:11:30,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 285 [2022-11-21 17:11:30,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:11:30,885 INFO L130 PetriNetUnfolder]: 605/2225 cut-off events. [2022-11-21 17:11:30,885 INFO L131 PetriNetUnfolder]: For 1080/1357 co-relation queries the response was YES. [2022-11-21 17:11:30,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4598 conditions, 2225 events. 605/2225 cut-off events. For 1080/1357 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 24385 event pairs, 288 based on Foata normal form. 13/1846 useless extension candidates. Maximal degree in co-relation 4493. Up to 616 conditions per place. [2022-11-21 17:11:30,910 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 0 selfloop transitions, 0 changer transitions 291/291 dead transitions. [2022-11-21 17:11:30,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 291 transitions, 1130 flow [2022-11-21 17:11:30,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:11:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:11:30,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1716 transitions. [2022-11-21 17:11:30,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601503759398497 [2022-11-21 17:11:30,914 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1716 transitions. [2022-11-21 17:11:30,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1716 transitions. [2022-11-21 17:11:30,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:11:30,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1716 transitions. [2022-11-21 17:11:30,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 245.14285714285714) internal successors, (1716), 7 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states 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 17:11:30,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 17:11:30,922 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 17:11:30,922 INFO L175 Difference]: Start difference. First operand has 334 places, 270 transitions, 936 flow. Second operand 7 states and 1716 transitions. [2022-11-21 17:11:30,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 291 transitions, 1130 flow [2022-11-21 17:11:30,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 291 transitions, 1128 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:11:30,934 INFO L231 Difference]: Finished difference. Result has 338 places, 0 transitions, 0 flow [2022-11-21 17:11:30,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=338, PETRI_TRANSITIONS=0} [2022-11-21 17:11:30,935 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 93 predicate places. [2022-11-21 17:11:30,936 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 0 transitions, 0 flow [2022-11-21 17:11:30,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.83333333333334) internal successors, (1445), 6 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states 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 17:11:30,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-21 17:11:30,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-21 17:11:30,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-21 17:11:30,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-21 17:11:30,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-21 17:11:30,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-21 17:11:30,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-21 17:11:30,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-21 17:11:30,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-21 17:11:30,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-21 17:11:30,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-21 17:11:30,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-21 17:11:30,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-21 17:11:30,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-21 17:11:30,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-21 17:11:30,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-21 17:11:30,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-21 17:11:30,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-21 17:11:30,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-11-21 17:11:30,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-11-21 17:11:30,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-11-21 17:11:30,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-21 17:11:30,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-21 17:11:30,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-21 17:11:30,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-21 17:11:30,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-21 17:11:30,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-21 17:11:30,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-21 17:11:30,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-21 17:11:30,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-21 17:11:30,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-21 17:11:30,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-21 17:11:30,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-21 17:11:30,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-21 17:11:30,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-21 17:11:30,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-21 17:11:30,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-21 17:11:30,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-21 17:11:30,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-21 17:11:30,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 17:11:30,948 INFO L444 BasicCegarLoop]: Path program 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] [2022-11-21 17:11:30,954 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 17:11:30,954 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:11:30,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:11:30 BasicIcfg [2022-11-21 17:11:30,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:11:30,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:11:30,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:11:30,961 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:11:30,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:11:10" (3/4) ... [2022-11-21 17:11:30,964 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 17:11:30,970 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-21 17:11:30,970 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-21 17:11:30,970 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-21 17:11:30,975 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-21 17:11:30,975 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 17:11:30,975 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 17:11:30,976 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 17:11:31,011 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 17:11:31,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:11:31,012 INFO L158 Benchmark]: Toolchain (without parser) took 22089.59ms. Allocated memory was 161.5MB in the beginning and 725.6MB in the end (delta: 564.1MB). Free memory was 123.8MB in the beginning and 485.2MB in the end (delta: -361.3MB). Peak memory consumption was 202.0MB. Max. memory is 16.1GB. [2022-11-21 17:11:31,012 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:11:31,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.98ms. Allocated memory is still 161.5MB. Free memory was 123.8MB in the beginning and 126.5MB in the end (delta: -2.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-21 17:11:31,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.54ms. Allocated memory is still 161.5MB. Free memory was 126.5MB in the beginning and 123.9MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 17:11:31,013 INFO L158 Benchmark]: Boogie Preprocessor took 43.56ms. Allocated memory is still 161.5MB. Free memory was 123.9MB in the beginning and 122.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:11:31,014 INFO L158 Benchmark]: RCFGBuilder took 800.46ms. Allocated memory is still 161.5MB. Free memory was 122.3MB in the beginning and 100.4MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-21 17:11:31,014 INFO L158 Benchmark]: TraceAbstraction took 20824.33ms. Allocated memory was 161.5MB in the beginning and 725.6MB in the end (delta: 564.1MB). Free memory was 100.0MB in the beginning and 488.3MB in the end (delta: -388.3MB). Peak memory consumption was 415.1MB. Max. memory is 16.1GB. [2022-11-21 17:11:31,015 INFO L158 Benchmark]: Witness Printer took 51.15ms. Allocated memory is still 725.6MB. Free memory was 488.3MB in the beginning and 485.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:11:31,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.98ms. Allocated memory is still 161.5MB. Free memory was 123.8MB in the beginning and 126.5MB in the end (delta: -2.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.54ms. Allocated memory is still 161.5MB. Free memory was 126.5MB in the beginning and 123.9MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.56ms. Allocated memory is still 161.5MB. Free memory was 123.9MB in the beginning and 122.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 800.46ms. Allocated memory is still 161.5MB. Free memory was 122.3MB in the beginning and 100.4MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 20824.33ms. Allocated memory was 161.5MB in the beginning and 725.6MB in the end (delta: 564.1MB). Free memory was 100.0MB in the beginning and 488.3MB in the end (delta: -388.3MB). Peak memory consumption was 415.1MB. Max. memory is 16.1GB. * Witness Printer took 51.15ms. Allocated memory is still 725.6MB. Free memory was 488.3MB in the beginning and 485.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 440 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.6s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1491 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1491 mSDsluCounter, 763 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 386 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2465 IncrementalHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 377 mSDtfsCounter, 2465 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=936occurred in iteration=26, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1986 ConstructedInterpolants, 0 QuantifiedInterpolants, 4157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 17:11:31,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4734e01f-37d3-4023-9516-c56c58c30dc6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE