./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8 --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 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa --- 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-e04fb08 [2022-11-16 11:43:25,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:43:25,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:43:25,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:43:25,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:43:25,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:43:25,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:43:25,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:43:25,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:43:25,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:43:25,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:43:25,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:43:25,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:43:25,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:43:25,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:43:25,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:43:25,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:43:25,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:43:25,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:43:25,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:43:25,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:43:25,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:43:25,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:43:25,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:43:25,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:43:25,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:43:25,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:43:25,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:43:25,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:43:25,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:43:25,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:43:25,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:43:25,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:43:25,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:43:25,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:43:25,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:43:25,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:43:25,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:43:25,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:43:25,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:43:25,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:43:25,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:43:25,402 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:43:25,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:43:25,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:43:25,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:43:25,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:43:25,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:43:25,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:43:25,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:43:25,407 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:43:25,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:43:25,408 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:43:25,409 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:43:25,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:43:25,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:43:25,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:43:25,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:43:25,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:43:25,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:43:25,410 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:43:25,410 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:43:25,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:43:25,411 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:43:25,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:43:25,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:43:25,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:43:25,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:43:25,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:43:25,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:43:25,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:43:25,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:43:25,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:43:25,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:43:25,413 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:43:25,413 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:43:25,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:43:25,414 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_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa [2022-11-16 11:43:25,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:43:25,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:43:25,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:43:25,775 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:43:25,778 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:43:25,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-11-16 11:43:25,856 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/data/03ef34868/4b3f87a391ac4edcac3b6aafb92f125a/FLAG2338d0f84 [2022-11-16 11:43:26,430 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:43:26,431 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-11-16 11:43:26,441 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/data/03ef34868/4b3f87a391ac4edcac3b6aafb92f125a/FLAG2338d0f84 [2022-11-16 11:43:26,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/data/03ef34868/4b3f87a391ac4edcac3b6aafb92f125a [2022-11-16 11:43:26,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:43:26,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:43:26,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:43:26,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:43:26,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:43:26,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da508b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:26, skipping insertion in model container [2022-11-16 11:43:26,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:43:26" (1/1) ... [2022-11-16 11:43:26,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:43:26,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:43:27,023 WARN L229 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_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-11-16 11:43:27,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:43:27,037 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:43:27,064 WARN L229 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_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-11-16 11:43:27,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:43:27,082 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:43:27,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27 WrapperNode [2022-11-16 11:43:27,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:43:27,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:43:27,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:43:27,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:43:27,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27" (1/1) ... [2022-11-16 11:43:27,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27" (1/1) ... [2022-11-16 11:43:27,155 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 290 [2022-11-16 11:43:27,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:43:27,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:43:27,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:43:27,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:43:27,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27" (1/1) ... [2022-11-16 11:43:27,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27" (1/1) ... [2022-11-16 11:43:27,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27" (1/1) ... [2022-11-16 11:43:27,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27" (1/1) ... [2022-11-16 11:43:27,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27" (1/1) ... [2022-11-16 11:43:27,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27" (1/1) ... [2022-11-16 11:43:27,195 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27" (1/1) ... [2022-11-16 11:43:27,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27" (1/1) ... [2022-11-16 11:43:27,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:43:27,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:43:27,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:43:27,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:43:27,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27" (1/1) ... [2022-11-16 11:43:27,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:43:27,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:27,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:43:27,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:43:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:43:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:43:27,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:43:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:43:27,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:43:27,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:43:27,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:43:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:43:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:43:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:43:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:43:27,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:43:27,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:43:27,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:43:27,332 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:43:27,489 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:43:27,491 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:43:28,208 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:43:28,224 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:43:28,224 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:43:28,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:43:28 BoogieIcfgContainer [2022-11-16 11:43:28,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:43:28,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:43:28,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:43:28,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:43:28,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:43:26" (1/3) ... [2022-11-16 11:43:28,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4739bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:43:28, skipping insertion in model container [2022-11-16 11:43:28,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:27" (2/3) ... [2022-11-16 11:43:28,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4739bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:43:28, skipping insertion in model container [2022-11-16 11:43:28,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:43:28" (3/3) ... [2022-11-16 11:43:28,236 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2022-11-16 11:43:28,245 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:43:28,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:43:28,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-16 11:43:28,257 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:43:28,415 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:43:28,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 420 transitions, 864 flow [2022-11-16 11:43:28,809 INFO L130 PetriNetUnfolder]: 26/417 cut-off events. [2022-11-16 11:43:28,810 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:43:28,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 417 events. 26/417 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 964 event pairs, 0 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 328. Up to 2 conditions per place. [2022-11-16 11:43:28,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 404 places, 420 transitions, 864 flow [2022-11-16 11:43:28,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 388 transitions, 791 flow [2022-11-16 11:43:28,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:43:28,885 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;@2c2a9f4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:43:28,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-11-16 11:43:28,903 INFO L130 PetriNetUnfolder]: 0/78 cut-off events. [2022-11-16 11:43:28,903 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:43:28,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:28,904 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] [2022-11-16 11:43:28,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:28,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:28,913 INFO L85 PathProgramCache]: Analyzing trace with hash -842592282, now seen corresponding path program 1 times [2022-11-16 11:43:28,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:28,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946026111] [2022-11-16 11:43:28,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:28,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:29,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:29,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946026111] [2022-11-16 11:43:29,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946026111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:29,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:29,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:29,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409588367] [2022-11-16 11:43:29,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:29,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:43:29,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:43:29,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:43:29,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:29,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 388 transitions, 791 flow. Second operand has 6 states, 6 states have (on average 354.8333333333333) internal successors, (2129), 6 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:29,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:29,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:29,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:31,041 INFO L130 PetriNetUnfolder]: 320/3300 cut-off events. [2022-11-16 11:43:31,041 INFO L131 PetriNetUnfolder]: For 145/235 co-relation queries the response was YES. [2022-11-16 11:43:31,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4012 conditions, 3300 events. 320/3300 cut-off events. For 145/235 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 28410 event pairs, 85 based on Foata normal form. 301/3004 useless extension candidates. Maximal degree in co-relation 3907. Up to 163 conditions per place. [2022-11-16 11:43:31,186 INFO L137 encePairwiseOnDemand]: 398/420 looper letters, 57 selfloop transitions, 9 changer transitions 0/391 dead transitions. [2022-11-16 11:43:31,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 391 transitions, 953 flow [2022-11-16 11:43:31,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:43:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:43:31,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2575 transitions. [2022-11-16 11:43:31,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8758503401360545 [2022-11-16 11:43:31,214 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2575 transitions. [2022-11-16 11:43:31,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2575 transitions. [2022-11-16 11:43:31,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:31,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2575 transitions. [2022-11-16 11:43:31,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 367.85714285714283) internal successors, (2575), 7 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:31,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:31,246 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:31,248 INFO L175 Difference]: Start difference. First operand has 374 places, 388 transitions, 791 flow. Second operand 7 states and 2575 transitions. [2022-11-16 11:43:31,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 391 transitions, 953 flow [2022-11-16 11:43:31,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 391 transitions, 931 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:43:31,263 INFO L231 Difference]: Finished difference. Result has 374 places, 375 transitions, 774 flow [2022-11-16 11:43:31,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=374, PETRI_TRANSITIONS=375} [2022-11-16 11:43:31,273 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 0 predicate places. [2022-11-16 11:43:31,273 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 375 transitions, 774 flow [2022-11-16 11:43:31,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 354.8333333333333) internal successors, (2129), 6 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:31,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:31,275 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] [2022-11-16 11:43:31,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:43:31,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:31,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:31,277 INFO L85 PathProgramCache]: Analyzing trace with hash -350555976, now seen corresponding path program 1 times [2022-11-16 11:43:31,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:31,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389607180] [2022-11-16 11:43:31,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:31,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:31,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:31,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389607180] [2022-11-16 11:43:31,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389607180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:31,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:31,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:31,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694313224] [2022-11-16 11:43:31,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:31,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:31,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:31,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:31,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:31,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 375 transitions, 774 flow. Second operand has 4 states, 4 states have (on average 354.75) internal successors, (1419), 4 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:31,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:31,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:31,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:31,992 INFO L130 PetriNetUnfolder]: 146/961 cut-off events. [2022-11-16 11:43:31,993 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-16 11:43:32,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 961 events. 146/961 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6075 event pairs, 60 based on Foata normal form. 6/838 useless extension candidates. Maximal degree in co-relation 887. Up to 164 conditions per place. [2022-11-16 11:43:32,030 INFO L137 encePairwiseOnDemand]: 407/420 looper letters, 64 selfloop transitions, 9 changer transitions 0/398 dead transitions. [2022-11-16 11:43:32,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 398 transitions, 974 flow [2022-11-16 11:43:32,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:43:32,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1489 transitions. [2022-11-16 11:43:32,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8863095238095238 [2022-11-16 11:43:32,037 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1489 transitions. [2022-11-16 11:43:32,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1489 transitions. [2022-11-16 11:43:32,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:32,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1489 transitions. [2022-11-16 11:43:32,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 372.25) internal successors, (1489), 4 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:32,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:32,049 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:32,049 INFO L175 Difference]: Start difference. First operand has 374 places, 375 transitions, 774 flow. Second operand 4 states and 1489 transitions. [2022-11-16 11:43:32,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 398 transitions, 974 flow [2022-11-16 11:43:32,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 398 transitions, 956 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:43:32,062 INFO L231 Difference]: Finished difference. Result has 372 places, 378 transitions, 812 flow [2022-11-16 11:43:32,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=812, PETRI_PLACES=372, PETRI_TRANSITIONS=378} [2022-11-16 11:43:32,064 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, -2 predicate places. [2022-11-16 11:43:32,065 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 378 transitions, 812 flow [2022-11-16 11:43:32,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 354.75) internal successors, (1419), 4 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:32,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:32,067 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] [2022-11-16 11:43:32,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:43:32,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:32,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:32,069 INFO L85 PathProgramCache]: Analyzing trace with hash 720859206, now seen corresponding path program 1 times [2022-11-16 11:43:32,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:32,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698068480] [2022-11-16 11:43:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:32,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:32,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:32,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698068480] [2022-11-16 11:43:32,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698068480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:32,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:32,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:32,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796328883] [2022-11-16 11:43:32,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:32,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:43:32,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:32,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:43:32,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:43:32,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:32,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 378 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 355.0) internal successors, (2130), 6 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:32,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:32,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:32,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:33,092 INFO L130 PetriNetUnfolder]: 295/1955 cut-off events. [2022-11-16 11:43:33,092 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-16 11:43:33,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2785 conditions, 1955 events. 295/1955 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 14976 event pairs, 80 based on Foata normal form. 0/1608 useless extension candidates. Maximal degree in co-relation 1548. Up to 192 conditions per place. [2022-11-16 11:43:33,145 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 56 selfloop transitions, 9 changer transitions 0/392 dead transitions. [2022-11-16 11:43:33,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 392 transitions, 980 flow [2022-11-16 11:43:33,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:43:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:43:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2537 transitions. [2022-11-16 11:43:33,152 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8629251700680272 [2022-11-16 11:43:33,154 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2537 transitions. [2022-11-16 11:43:33,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2537 transitions. [2022-11-16 11:43:33,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:33,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2537 transitions. [2022-11-16 11:43:33,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 362.42857142857144) internal successors, (2537), 7 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:33,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:33,170 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:33,170 INFO L175 Difference]: Start difference. First operand has 372 places, 378 transitions, 812 flow. Second operand 7 states and 2537 transitions. [2022-11-16 11:43:33,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 392 transitions, 980 flow [2022-11-16 11:43:33,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 392 transitions, 980 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:43:33,180 INFO L231 Difference]: Finished difference. Result has 377 places, 377 transitions, 828 flow [2022-11-16 11:43:33,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=828, PETRI_PLACES=377, PETRI_TRANSITIONS=377} [2022-11-16 11:43:33,184 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 3 predicate places. [2022-11-16 11:43:33,184 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 377 transitions, 828 flow [2022-11-16 11:43:33,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 355.0) internal successors, (2130), 6 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:33,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:33,186 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] [2022-11-16 11:43:33,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:43:33,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:33,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:33,188 INFO L85 PathProgramCache]: Analyzing trace with hash 871799999, now seen corresponding path program 1 times [2022-11-16 11:43:33,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:33,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539440368] [2022-11-16 11:43:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:33,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:33,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:33,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539440368] [2022-11-16 11:43:33,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539440368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:33,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:33,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:33,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967726343] [2022-11-16 11:43:33,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:33,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:33,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:33,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:33,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:33,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 377 transitions, 828 flow. Second operand has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:33,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:33,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:33,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:34,048 INFO L130 PetriNetUnfolder]: 214/1275 cut-off events. [2022-11-16 11:43:34,049 INFO L131 PetriNetUnfolder]: For 161/285 co-relation queries the response was YES. [2022-11-16 11:43:34,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 1275 events. 214/1275 cut-off events. For 161/285 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9990 event pairs, 90 based on Foata normal form. 8/1016 useless extension candidates. Maximal degree in co-relation 1340. Up to 228 conditions per place. [2022-11-16 11:43:34,108 INFO L137 encePairwiseOnDemand]: 407/420 looper letters, 63 selfloop transitions, 9 changer transitions 0/399 dead transitions. [2022-11-16 11:43:34,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 399 transitions, 1023 flow [2022-11-16 11:43:34,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:43:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1488 transitions. [2022-11-16 11:43:34,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-11-16 11:43:34,113 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1488 transitions. [2022-11-16 11:43:34,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1488 transitions. [2022-11-16 11:43:34,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:34,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1488 transitions. [2022-11-16 11:43:34,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:34,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:34,129 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:34,130 INFO L175 Difference]: Start difference. First operand has 377 places, 377 transitions, 828 flow. Second operand 4 states and 1488 transitions. [2022-11-16 11:43:34,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 399 transitions, 1023 flow [2022-11-16 11:43:34,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 399 transitions, 1005 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:43:34,138 INFO L231 Difference]: Finished difference. Result has 375 places, 380 transitions, 866 flow [2022-11-16 11:43:34,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=866, PETRI_PLACES=375, PETRI_TRANSITIONS=380} [2022-11-16 11:43:34,140 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 1 predicate places. [2022-11-16 11:43:34,140 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 380 transitions, 866 flow [2022-11-16 11:43:34,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:34,141 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:34,141 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] [2022-11-16 11:43:34,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:43:34,141 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:34,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:34,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1890523423, now seen corresponding path program 1 times [2022-11-16 11:43:34,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:34,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910465497] [2022-11-16 11:43:34,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:34,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:34,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:34,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910465497] [2022-11-16 11:43:34,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910465497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:34,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:34,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:34,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147705772] [2022-11-16 11:43:34,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:34,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:34,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:34,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:34,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:34,242 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:34,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 380 transitions, 866 flow. Second operand has 4 states, 4 states have (on average 355.25) internal successors, (1421), 4 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:34,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:34,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:34,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:34,642 INFO L130 PetriNetUnfolder]: 132/944 cut-off events. [2022-11-16 11:43:34,643 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-11-16 11:43:34,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 944 events. 132/944 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5946 event pairs, 48 based on Foata normal form. 6/834 useless extension candidates. Maximal degree in co-relation 1350. Up to 130 conditions per place. [2022-11-16 11:43:34,685 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 64 selfloop transitions, 7 changer transitions 0/398 dead transitions. [2022-11-16 11:43:34,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 398 transitions, 1044 flow [2022-11-16 11:43:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:43:34,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1485 transitions. [2022-11-16 11:43:34,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8839285714285714 [2022-11-16 11:43:34,689 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1485 transitions. [2022-11-16 11:43:34,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1485 transitions. [2022-11-16 11:43:34,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:34,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1485 transitions. [2022-11-16 11:43:34,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 371.25) internal successors, (1485), 4 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:34,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:34,698 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:34,698 INFO L175 Difference]: Start difference. First operand has 375 places, 380 transitions, 866 flow. Second operand 4 states and 1485 transitions. [2022-11-16 11:43:34,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 398 transitions, 1044 flow [2022-11-16 11:43:34,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 398 transitions, 1039 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:43:34,707 INFO L231 Difference]: Finished difference. Result has 377 places, 378 transitions, 863 flow [2022-11-16 11:43:34,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=863, PETRI_PLACES=377, PETRI_TRANSITIONS=378} [2022-11-16 11:43:34,708 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 3 predicate places. [2022-11-16 11:43:34,709 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 378 transitions, 863 flow [2022-11-16 11:43:34,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.25) internal successors, (1421), 4 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:34,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:34,710 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] [2022-11-16 11:43:34,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:43:34,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:34,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:34,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1523315024, now seen corresponding path program 1 times [2022-11-16 11:43:34,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:34,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608577960] [2022-11-16 11:43:34,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:34,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:34,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:34,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608577960] [2022-11-16 11:43:34,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608577960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:34,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:34,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:34,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338182955] [2022-11-16 11:43:34,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:34,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:43:34,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:34,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:43:34,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:43:34,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:34,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 378 transitions, 863 flow. Second operand has 6 states, 6 states have (on average 355.1666666666667) internal successors, (2131), 6 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:34,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:34,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:34,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:35,601 INFO L130 PetriNetUnfolder]: 277/1876 cut-off events. [2022-11-16 11:43:35,601 INFO L131 PetriNetUnfolder]: For 108/200 co-relation queries the response was YES. [2022-11-16 11:43:35,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2856 conditions, 1876 events. 277/1876 cut-off events. For 108/200 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 13311 event pairs, 108 based on Foata normal form. 2/1650 useless extension candidates. Maximal degree in co-relation 2256. Up to 239 conditions per place. [2022-11-16 11:43:35,673 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 47 selfloop transitions, 10 changer transitions 0/386 dead transitions. [2022-11-16 11:43:35,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 386 transitions, 1002 flow [2022-11-16 11:43:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:43:35,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:43:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2528 transitions. [2022-11-16 11:43:35,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-16 11:43:35,679 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2528 transitions. [2022-11-16 11:43:35,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2528 transitions. [2022-11-16 11:43:35,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:35,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2528 transitions. [2022-11-16 11:43:35,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.14285714285717) internal successors, (2528), 7 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:35,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:35,693 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:35,693 INFO L175 Difference]: Start difference. First operand has 377 places, 378 transitions, 863 flow. Second operand 7 states and 2528 transitions. [2022-11-16 11:43:35,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 386 transitions, 1002 flow [2022-11-16 11:43:35,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 386 transitions, 991 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:43:35,702 INFO L231 Difference]: Finished difference. Result has 380 places, 377 transitions, 870 flow [2022-11-16 11:43:35,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=870, PETRI_PLACES=380, PETRI_TRANSITIONS=377} [2022-11-16 11:43:35,704 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-16 11:43:35,705 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 377 transitions, 870 flow [2022-11-16 11:43:35,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 355.1666666666667) internal successors, (2131), 6 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:35,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:35,707 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] [2022-11-16 11:43:35,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:43:35,707 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:35,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:35,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1553470387, now seen corresponding path program 1 times [2022-11-16 11:43:35,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:35,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7817818] [2022-11-16 11:43:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:35,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:35,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:35,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7817818] [2022-11-16 11:43:35,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7817818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:35,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:35,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:35,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677620247] [2022-11-16 11:43:35,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:35,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:35,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:35,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:35,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:35,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:35,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 377 transitions, 870 flow. Second operand has 4 states, 4 states have (on average 355.5) internal successors, (1422), 4 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:35,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:35,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:35,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:36,243 INFO L130 PetriNetUnfolder]: 163/1107 cut-off events. [2022-11-16 11:43:36,243 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-11-16 11:43:36,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1839 conditions, 1107 events. 163/1107 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 7391 event pairs, 74 based on Foata normal form. 6/984 useless extension candidates. Maximal degree in co-relation 1663. Up to 201 conditions per place. [2022-11-16 11:43:36,290 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 60 selfloop transitions, 7 changer transitions 0/396 dead transitions. [2022-11-16 11:43:36,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 396 transitions, 1049 flow [2022-11-16 11:43:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:43:36,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1480 transitions. [2022-11-16 11:43:36,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2022-11-16 11:43:36,294 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1480 transitions. [2022-11-16 11:43:36,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1480 transitions. [2022-11-16 11:43:36,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:36,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1480 transitions. [2022-11-16 11:43:36,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:36,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:36,303 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:36,303 INFO L175 Difference]: Start difference. First operand has 380 places, 377 transitions, 870 flow. Second operand 4 states and 1480 transitions. [2022-11-16 11:43:36,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 396 transitions, 1049 flow [2022-11-16 11:43:36,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 396 transitions, 1024 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 11:43:36,312 INFO L231 Difference]: Finished difference. Result has 376 places, 378 transitions, 875 flow [2022-11-16 11:43:36,313 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=875, PETRI_PLACES=376, PETRI_TRANSITIONS=378} [2022-11-16 11:43:36,314 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 2 predicate places. [2022-11-16 11:43:36,315 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 378 transitions, 875 flow [2022-11-16 11:43:36,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.5) internal successors, (1422), 4 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:36,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:36,316 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] [2022-11-16 11:43:36,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:43:36,316 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:36,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:36,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1013590811, now seen corresponding path program 1 times [2022-11-16 11:43:36,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:36,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257260968] [2022-11-16 11:43:36,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:36,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:36,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:36,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257260968] [2022-11-16 11:43:36,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257260968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:36,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:36,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:36,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147022046] [2022-11-16 11:43:36,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:36,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:43:36,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:36,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:43:36,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:43:36,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:36,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 378 transitions, 875 flow. Second operand has 6 states, 6 states have (on average 355.1666666666667) internal successors, (2131), 6 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:36,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:36,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:36,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:37,558 INFO L130 PetriNetUnfolder]: 563/3170 cut-off events. [2022-11-16 11:43:37,558 INFO L131 PetriNetUnfolder]: For 426/456 co-relation queries the response was YES. [2022-11-16 11:43:37,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4460 conditions, 3170 events. 563/3170 cut-off events. For 426/456 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 33839 event pairs, 128 based on Foata normal form. 0/2444 useless extension candidates. Maximal degree in co-relation 3556. Up to 401 conditions per place. [2022-11-16 11:43:37,658 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 55 selfloop transitions, 9 changer transitions 0/391 dead transitions. [2022-11-16 11:43:37,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 391 transitions, 1035 flow [2022-11-16 11:43:37,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:43:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:43:37,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2536 transitions. [2022-11-16 11:43:37,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8625850340136054 [2022-11-16 11:43:37,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2536 transitions. [2022-11-16 11:43:37,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2536 transitions. [2022-11-16 11:43:37,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:37,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2536 transitions. [2022-11-16 11:43:37,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 362.2857142857143) internal successors, (2536), 7 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:37,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:37,683 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:37,684 INFO L175 Difference]: Start difference. First operand has 376 places, 378 transitions, 875 flow. Second operand 7 states and 2536 transitions. [2022-11-16 11:43:37,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 391 transitions, 1035 flow [2022-11-16 11:43:37,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 391 transitions, 1030 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:43:37,692 INFO L231 Difference]: Finished difference. Result has 380 places, 377 transitions, 886 flow [2022-11-16 11:43:37,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=886, PETRI_PLACES=380, PETRI_TRANSITIONS=377} [2022-11-16 11:43:37,696 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-16 11:43:37,696 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 377 transitions, 886 flow [2022-11-16 11:43:37,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 355.1666666666667) internal successors, (2131), 6 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:37,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:37,698 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] [2022-11-16 11:43:37,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:43:37,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:37,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:37,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1356545265, now seen corresponding path program 1 times [2022-11-16 11:43:37,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:37,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72393913] [2022-11-16 11:43:37,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:37,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:37,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:37,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72393913] [2022-11-16 11:43:37,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72393913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:37,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:37,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:37,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992355161] [2022-11-16 11:43:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:37,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:37,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:37,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:37,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:37,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:37,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 377 transitions, 886 flow. Second operand has 4 states, 4 states have (on average 355.25) internal successors, (1421), 4 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:37,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:37,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:37,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:38,678 INFO L130 PetriNetUnfolder]: 620/2940 cut-off events. [2022-11-16 11:43:38,679 INFO L131 PetriNetUnfolder]: For 639/645 co-relation queries the response was YES. [2022-11-16 11:43:38,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4335 conditions, 2940 events. 620/2940 cut-off events. For 639/645 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 31448 event pairs, 207 based on Foata normal form. 20/2275 useless extension candidates. Maximal degree in co-relation 4245. Up to 615 conditions per place. [2022-11-16 11:43:38,827 INFO L137 encePairwiseOnDemand]: 407/420 looper letters, 62 selfloop transitions, 9 changer transitions 0/398 dead transitions. [2022-11-16 11:43:38,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 398 transitions, 1074 flow [2022-11-16 11:43:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:43:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1487 transitions. [2022-11-16 11:43:38,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8851190476190476 [2022-11-16 11:43:38,832 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1487 transitions. [2022-11-16 11:43:38,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1487 transitions. [2022-11-16 11:43:38,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:38,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1487 transitions. [2022-11-16 11:43:38,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 371.75) internal successors, (1487), 4 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:38,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:38,842 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:38,842 INFO L175 Difference]: Start difference. First operand has 380 places, 377 transitions, 886 flow. Second operand 4 states and 1487 transitions. [2022-11-16 11:43:38,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 398 transitions, 1074 flow [2022-11-16 11:43:38,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 398 transitions, 1056 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:43:38,852 INFO L231 Difference]: Finished difference. Result has 378 places, 380 transitions, 924 flow [2022-11-16 11:43:38,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=924, PETRI_PLACES=378, PETRI_TRANSITIONS=380} [2022-11-16 11:43:38,854 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 4 predicate places. [2022-11-16 11:43:38,854 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 380 transitions, 924 flow [2022-11-16 11:43:38,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.25) internal successors, (1421), 4 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:38,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:38,855 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] [2022-11-16 11:43:38,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:43:38,856 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:38,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2133347930, now seen corresponding path program 1 times [2022-11-16 11:43:38,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:38,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409651815] [2022-11-16 11:43:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:38,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:38,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:38,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409651815] [2022-11-16 11:43:38,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409651815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:38,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:38,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:38,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109981888] [2022-11-16 11:43:38,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:38,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:38,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:38,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:38,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:38,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:38,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 380 transitions, 924 flow. Second operand has 4 states, 4 states have (on average 355.5) internal successors, (1422), 4 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:38,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:38,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:38,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:39,798 INFO L130 PetriNetUnfolder]: 250/1485 cut-off events. [2022-11-16 11:43:39,798 INFO L131 PetriNetUnfolder]: For 313/487 co-relation queries the response was YES. [2022-11-16 11:43:39,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 1485 events. 250/1485 cut-off events. For 313/487 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12305 event pairs, 96 based on Foata normal form. 10/1177 useless extension candidates. Maximal degree in co-relation 2166. Up to 231 conditions per place. [2022-11-16 11:43:39,912 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 63 selfloop transitions, 7 changer transitions 0/397 dead transitions. [2022-11-16 11:43:39,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 397 transitions, 1097 flow [2022-11-16 11:43:39,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:43:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1484 transitions. [2022-11-16 11:43:39,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-11-16 11:43:39,917 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1484 transitions. [2022-11-16 11:43:39,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1484 transitions. [2022-11-16 11:43:39,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:39,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1484 transitions. [2022-11-16 11:43:39,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:39,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:39,926 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:39,926 INFO L175 Difference]: Start difference. First operand has 378 places, 380 transitions, 924 flow. Second operand 4 states and 1484 transitions. [2022-11-16 11:43:39,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 397 transitions, 1097 flow [2022-11-16 11:43:39,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 397 transitions, 1092 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:43:39,937 INFO L231 Difference]: Finished difference. Result has 380 places, 378 transitions, 921 flow [2022-11-16 11:43:39,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=921, PETRI_PLACES=380, PETRI_TRANSITIONS=378} [2022-11-16 11:43:39,939 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-16 11:43:39,940 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 378 transitions, 921 flow [2022-11-16 11:43:39,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.5) internal successors, (1422), 4 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:39,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:39,941 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] [2022-11-16 11:43:39,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:43:39,941 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:39,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:39,942 INFO L85 PathProgramCache]: Analyzing trace with hash 124788053, now seen corresponding path program 1 times [2022-11-16 11:43:39,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:39,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625494425] [2022-11-16 11:43:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:39,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:40,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:40,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:40,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625494425] [2022-11-16 11:43:40,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625494425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:40,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:40,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:43:40,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896519490] [2022-11-16 11:43:40,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:40,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:43:40,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:40,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:43:40,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:43:40,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-16 11:43:40,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 378 transitions, 921 flow. Second operand has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:40,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:40,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-16 11:43:40,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:41,036 INFO L130 PetriNetUnfolder]: 418/2137 cut-off events. [2022-11-16 11:43:41,037 INFO L131 PetriNetUnfolder]: For 152/398 co-relation queries the response was YES. [2022-11-16 11:43:41,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 2137 events. 418/2137 cut-off events. For 152/398 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 16284 event pairs, 101 based on Foata normal form. 4/1931 useless extension candidates. Maximal degree in co-relation 3490. Up to 219 conditions per place. [2022-11-16 11:43:41,125 INFO L137 encePairwiseOnDemand]: 405/420 looper letters, 67 selfloop transitions, 16 changer transitions 0/402 dead transitions. [2022-11-16 11:43:41,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 402 transitions, 1156 flow [2022-11-16 11:43:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:43:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:43:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3855 transitions. [2022-11-16 11:43:41,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8344155844155844 [2022-11-16 11:43:41,134 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3855 transitions. [2022-11-16 11:43:41,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3855 transitions. [2022-11-16 11:43:41,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:41,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3855 transitions. [2022-11-16 11:43:41,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.45454545454544) internal successors, (3855), 11 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:41,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:41,154 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:41,154 INFO L175 Difference]: Start difference. First operand has 380 places, 378 transitions, 921 flow. Second operand 11 states and 3855 transitions. [2022-11-16 11:43:41,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 402 transitions, 1156 flow [2022-11-16 11:43:41,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 402 transitions, 1145 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:43:41,162 INFO L231 Difference]: Finished difference. Result has 390 places, 379 transitions, 955 flow [2022-11-16 11:43:41,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=955, PETRI_PLACES=390, PETRI_TRANSITIONS=379} [2022-11-16 11:43:41,164 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 16 predicate places. [2022-11-16 11:43:41,165 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 379 transitions, 955 flow [2022-11-16 11:43:41,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:41,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:41,166 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] [2022-11-16 11:43:41,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:43:41,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:41,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:41,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1709275280, now seen corresponding path program 1 times [2022-11-16 11:43:41,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:41,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705485697] [2022-11-16 11:43:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:41,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:41,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:41,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705485697] [2022-11-16 11:43:41,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705485697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:41,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:41,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108360164] [2022-11-16 11:43:41,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:41,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:43:41,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:41,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:43:41,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:43:41,269 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:41,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 379 transitions, 955 flow. Second operand has 6 states, 6 states have (on average 355.3333333333333) internal successors, (2132), 6 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:41,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:41,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:41,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:42,245 INFO L130 PetriNetUnfolder]: 367/2696 cut-off events. [2022-11-16 11:43:42,245 INFO L131 PetriNetUnfolder]: For 449/449 co-relation queries the response was YES. [2022-11-16 11:43:42,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4196 conditions, 2696 events. 367/2696 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 23235 event pairs, 149 based on Foata normal form. 0/2293 useless extension candidates. Maximal degree in co-relation 4038. Up to 328 conditions per place. [2022-11-16 11:43:42,348 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 47 selfloop transitions, 10 changer transitions 0/387 dead transitions. [2022-11-16 11:43:42,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 387 transitions, 1100 flow [2022-11-16 11:43:42,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:43:42,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:43:42,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2528 transitions. [2022-11-16 11:43:42,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-16 11:43:42,362 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2528 transitions. [2022-11-16 11:43:42,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2528 transitions. [2022-11-16 11:43:42,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:42,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2528 transitions. [2022-11-16 11:43:42,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.14285714285717) internal successors, (2528), 7 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:42,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:42,376 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:42,376 INFO L175 Difference]: Start difference. First operand has 390 places, 379 transitions, 955 flow. Second operand 7 states and 2528 transitions. [2022-11-16 11:43:42,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 387 transitions, 1100 flow [2022-11-16 11:43:42,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 387 transitions, 1070 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 11:43:42,387 INFO L231 Difference]: Finished difference. Result has 389 places, 378 transitions, 949 flow [2022-11-16 11:43:42,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=949, PETRI_PLACES=389, PETRI_TRANSITIONS=378} [2022-11-16 11:43:42,388 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 15 predicate places. [2022-11-16 11:43:42,389 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 378 transitions, 949 flow [2022-11-16 11:43:42,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 355.3333333333333) internal successors, (2132), 6 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:42,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:42,390 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] [2022-11-16 11:43:42,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:43:42,390 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:42,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:42,391 INFO L85 PathProgramCache]: Analyzing trace with hash -426536634, now seen corresponding path program 1 times [2022-11-16 11:43:42,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:42,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715574256] [2022-11-16 11:43:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:42,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:42,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:42,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715574256] [2022-11-16 11:43:42,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715574256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:42,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:42,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:43:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437574545] [2022-11-16 11:43:42,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:42,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:43:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:43:42,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:43:42,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-16 11:43:42,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 378 transitions, 949 flow. Second operand has 8 states, 8 states have (on average 345.125) internal successors, (2761), 8 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:42,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:42,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-16 11:43:42,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:43,511 INFO L130 PetriNetUnfolder]: 368/2074 cut-off events. [2022-11-16 11:43:43,511 INFO L131 PetriNetUnfolder]: For 327/549 co-relation queries the response was YES. [2022-11-16 11:43:43,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 2074 events. 368/2074 cut-off events. For 327/549 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 15862 event pairs, 101 based on Foata normal form. 4/1889 useless extension candidates. Maximal degree in co-relation 3512. Up to 219 conditions per place. [2022-11-16 11:43:43,582 INFO L137 encePairwiseOnDemand]: 404/420 looper letters, 69 selfloop transitions, 17 changer transitions 0/404 dead transitions. [2022-11-16 11:43:43,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 404 transitions, 1215 flow [2022-11-16 11:43:43,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:43:43,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:43:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3857 transitions. [2022-11-16 11:43:43,590 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8348484848484848 [2022-11-16 11:43:43,591 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3857 transitions. [2022-11-16 11:43:43,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3857 transitions. [2022-11-16 11:43:43,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:43,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3857 transitions. [2022-11-16 11:43:43,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.6363636363636) internal successors, (3857), 11 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:43,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:43,613 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:43,614 INFO L175 Difference]: Start difference. First operand has 389 places, 378 transitions, 949 flow. Second operand 11 states and 3857 transitions. [2022-11-16 11:43:43,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 404 transitions, 1215 flow [2022-11-16 11:43:43,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 404 transitions, 1181 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:43:43,624 INFO L231 Difference]: Finished difference. Result has 395 places, 379 transitions, 976 flow [2022-11-16 11:43:43,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=976, PETRI_PLACES=395, PETRI_TRANSITIONS=379} [2022-11-16 11:43:43,626 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 21 predicate places. [2022-11-16 11:43:43,626 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 379 transitions, 976 flow [2022-11-16 11:43:43,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 345.125) internal successors, (2761), 8 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:43,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:43,627 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] [2022-11-16 11:43:43,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:43:43,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:43,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:43,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1060673197, now seen corresponding path program 1 times [2022-11-16 11:43:43,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:43,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178230453] [2022-11-16 11:43:43,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:43,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:43,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178230453] [2022-11-16 11:43:43,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178230453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:43,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:43,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:43,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826964010] [2022-11-16 11:43:43,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:43,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:43,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:43,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:43,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:43,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:43,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 379 transitions, 976 flow. Second operand has 4 states, 4 states have (on average 355.75) internal successors, (1423), 4 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:43,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:43,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:43,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:44,622 INFO L130 PetriNetUnfolder]: 313/1770 cut-off events. [2022-11-16 11:43:44,622 INFO L131 PetriNetUnfolder]: For 324/546 co-relation queries the response was YES. [2022-11-16 11:43:44,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 1770 events. 313/1770 cut-off events. For 324/546 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 15641 event pairs, 85 based on Foata normal form. 10/1406 useless extension candidates. Maximal degree in co-relation 2674. Up to 356 conditions per place. [2022-11-16 11:43:44,680 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 59 selfloop transitions, 7 changer transitions 0/397 dead transitions. [2022-11-16 11:43:44,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 397 transitions, 1150 flow [2022-11-16 11:43:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:44,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:43:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1479 transitions. [2022-11-16 11:43:44,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8803571428571428 [2022-11-16 11:43:44,685 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1479 transitions. [2022-11-16 11:43:44,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1479 transitions. [2022-11-16 11:43:44,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:44,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1479 transitions. [2022-11-16 11:43:44,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 369.75) internal successors, (1479), 4 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) [2022-11-16 11:43:44,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:44,700 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:44,700 INFO L175 Difference]: Start difference. First operand has 395 places, 379 transitions, 976 flow. Second operand 4 states and 1479 transitions. [2022-11-16 11:43:44,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 397 transitions, 1150 flow [2022-11-16 11:43:44,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 397 transitions, 1120 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-16 11:43:44,712 INFO L231 Difference]: Finished difference. Result has 391 places, 380 transitions, 976 flow [2022-11-16 11:43:44,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=976, PETRI_PLACES=391, PETRI_TRANSITIONS=380} [2022-11-16 11:43:44,713 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 17 predicate places. [2022-11-16 11:43:44,714 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 380 transitions, 976 flow [2022-11-16 11:43:44,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.75) internal successors, (1423), 4 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:44,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:44,715 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] [2022-11-16 11:43:44,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:43:44,715 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:44,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2106832086, now seen corresponding path program 1 times [2022-11-16 11:43:44,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:44,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131492480] [2022-11-16 11:43:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:44,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:44,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:44,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131492480] [2022-11-16 11:43:44,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131492480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:44,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:44,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:44,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146701775] [2022-11-16 11:43:44,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:43:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:44,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:43:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:43:44,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 420 [2022-11-16 11:43:44,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 380 transitions, 976 flow. Second operand has 6 states, 6 states have (on average 336.3333333333333) internal successors, (2018), 6 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:44,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:44,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 420 [2022-11-16 11:43:44,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:45,773 INFO L130 PetriNetUnfolder]: 241/1280 cut-off events. [2022-11-16 11:43:45,773 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2022-11-16 11:43:45,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1280 events. 241/1280 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9339 event pairs, 122 based on Foata normal form. 3/1175 useless extension candidates. Maximal degree in co-relation 2347. Up to 315 conditions per place. [2022-11-16 11:43:45,846 INFO L137 encePairwiseOnDemand]: 403/420 looper letters, 74 selfloop transitions, 17 changer transitions 0/400 dead transitions. [2022-11-16 11:43:45,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 400 transitions, 1212 flow [2022-11-16 11:43:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:43:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:43:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2421 transitions. [2022-11-16 11:43:45,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823469387755102 [2022-11-16 11:43:45,853 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2421 transitions. [2022-11-16 11:43:45,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2421 transitions. [2022-11-16 11:43:45,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:45,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2421 transitions. [2022-11-16 11:43:45,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 345.85714285714283) internal successors, (2421), 7 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:45,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:45,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:45,867 INFO L175 Difference]: Start difference. First operand has 391 places, 380 transitions, 976 flow. Second operand 7 states and 2421 transitions. [2022-11-16 11:43:45,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 400 transitions, 1212 flow [2022-11-16 11:43:45,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 400 transitions, 1204 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:43:45,878 INFO L231 Difference]: Finished difference. Result has 399 places, 388 transitions, 1067 flow [2022-11-16 11:43:45,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1067, PETRI_PLACES=399, PETRI_TRANSITIONS=388} [2022-11-16 11:43:45,880 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 25 predicate places. [2022-11-16 11:43:45,880 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 388 transitions, 1067 flow [2022-11-16 11:43:45,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.3333333333333) internal successors, (2018), 6 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:45,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:45,881 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] [2022-11-16 11:43:45,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:43:45,882 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash -160253990, now seen corresponding path program 1 times [2022-11-16 11:43:45,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:45,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083469703] [2022-11-16 11:43:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:45,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:46,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:46,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083469703] [2022-11-16 11:43:46,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083469703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:46,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:46,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:46,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966051465] [2022-11-16 11:43:46,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:46,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:43:46,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:46,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:43:46,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:43:46,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 420 [2022-11-16 11:43:46,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 388 transitions, 1067 flow. Second operand has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:46,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:46,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 420 [2022-11-16 11:43:46,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:46,790 INFO L130 PetriNetUnfolder]: 225/1258 cut-off events. [2022-11-16 11:43:46,790 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2022-11-16 11:43:46,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2610 conditions, 1258 events. 225/1258 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9046 event pairs, 102 based on Foata normal form. 3/1192 useless extension candidates. Maximal degree in co-relation 2445. Up to 265 conditions per place. [2022-11-16 11:43:46,836 INFO L137 encePairwiseOnDemand]: 402/420 looper letters, 94 selfloop transitions, 20 changer transitions 0/423 dead transitions. [2022-11-16 11:43:46,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 423 transitions, 1424 flow [2022-11-16 11:43:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:43:46,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:43:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2435 transitions. [2022-11-16 11:43:46,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8282312925170068 [2022-11-16 11:43:46,842 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2435 transitions. [2022-11-16 11:43:46,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2435 transitions. [2022-11-16 11:43:46,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:46,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2435 transitions. [2022-11-16 11:43:46,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 347.85714285714283) internal successors, (2435), 7 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:46,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:46,852 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:46,853 INFO L175 Difference]: Start difference. First operand has 399 places, 388 transitions, 1067 flow. Second operand 7 states and 2435 transitions. [2022-11-16 11:43:46,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 423 transitions, 1424 flow [2022-11-16 11:43:46,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 423 transitions, 1412 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:43:46,864 INFO L231 Difference]: Finished difference. Result has 407 places, 399 transitions, 1193 flow [2022-11-16 11:43:46,864 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1193, PETRI_PLACES=407, PETRI_TRANSITIONS=399} [2022-11-16 11:43:46,865 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 33 predicate places. [2022-11-16 11:43:46,865 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 399 transitions, 1193 flow [2022-11-16 11:43:46,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:46,866 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:46,866 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] [2022-11-16 11:43:46,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:43:46,867 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:46,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:46,867 INFO L85 PathProgramCache]: Analyzing trace with hash -28056744, now seen corresponding path program 1 times [2022-11-16 11:43:46,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:46,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501462043] [2022-11-16 11:43:46,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:46,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:46,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:46,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501462043] [2022-11-16 11:43:46,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501462043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:46,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:46,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:46,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873198204] [2022-11-16 11:43:46,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:46,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:46,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:46,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:46,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:46,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:46,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 399 transitions, 1193 flow. Second operand has 4 states, 4 states have (on average 355.75) internal successors, (1423), 4 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:46,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:46,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:46,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:48,101 INFO L130 PetriNetUnfolder]: 727/3244 cut-off events. [2022-11-16 11:43:48,102 INFO L131 PetriNetUnfolder]: For 1116/1122 co-relation queries the response was YES. [2022-11-16 11:43:48,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5243 conditions, 3244 events. 727/3244 cut-off events. For 1116/1122 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 37619 event pairs, 288 based on Foata normal form. 26/2442 useless extension candidates. Maximal degree in co-relation 5141. Up to 629 conditions per place. [2022-11-16 11:43:48,184 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 62 selfloop transitions, 7 changer transitions 0/415 dead transitions. [2022-11-16 11:43:48,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 415 transitions, 1359 flow [2022-11-16 11:43:48,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:48,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:43:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1483 transitions. [2022-11-16 11:43:48,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8827380952380952 [2022-11-16 11:43:48,188 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1483 transitions. [2022-11-16 11:43:48,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1483 transitions. [2022-11-16 11:43:48,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:48,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1483 transitions. [2022-11-16 11:43:48,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 370.75) internal successors, (1483), 4 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:48,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:48,195 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:48,195 INFO L175 Difference]: Start difference. First operand has 407 places, 399 transitions, 1193 flow. Second operand 4 states and 1483 transitions. [2022-11-16 11:43:48,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 415 transitions, 1359 flow [2022-11-16 11:43:48,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 415 transitions, 1346 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:43:48,206 INFO L231 Difference]: Finished difference. Result has 408 places, 397 transitions, 1182 flow [2022-11-16 11:43:48,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1182, PETRI_PLACES=408, PETRI_TRANSITIONS=397} [2022-11-16 11:43:48,207 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 34 predicate places. [2022-11-16 11:43:48,208 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 397 transitions, 1182 flow [2022-11-16 11:43:48,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.75) internal successors, (1423), 4 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:48,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:48,208 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] [2022-11-16 11:43:48,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:43:48,209 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:48,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:48,209 INFO L85 PathProgramCache]: Analyzing trace with hash -869757851, now seen corresponding path program 1 times [2022-11-16 11:43:48,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:48,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739422911] [2022-11-16 11:43:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:48,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:48,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:48,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739422911] [2022-11-16 11:43:48,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739422911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:48,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:48,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:48,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126495005] [2022-11-16 11:43:48,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:48,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:43:48,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:48,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:43:48,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:43:48,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:48,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 397 transitions, 1182 flow. Second operand has 6 states, 6 states have (on average 355.5) internal successors, (2133), 6 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:48,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:48,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:48,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:49,661 INFO L130 PetriNetUnfolder]: 773/4644 cut-off events. [2022-11-16 11:43:49,661 INFO L131 PetriNetUnfolder]: For 1041/1083 co-relation queries the response was YES. [2022-11-16 11:43:49,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7136 conditions, 4644 events. 773/4644 cut-off events. For 1041/1083 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 53146 event pairs, 546 based on Foata normal form. 0/3679 useless extension candidates. Maximal degree in co-relation 5979. Up to 716 conditions per place. [2022-11-16 11:43:49,749 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 47 selfloop transitions, 10 changer transitions 0/405 dead transitions. [2022-11-16 11:43:49,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 405 transitions, 1318 flow [2022-11-16 11:43:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:43:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:43:49,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2528 transitions. [2022-11-16 11:43:49,753 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-16 11:43:49,753 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2528 transitions. [2022-11-16 11:43:49,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2528 transitions. [2022-11-16 11:43:49,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:49,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2528 transitions. [2022-11-16 11:43:49,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.14285714285717) internal successors, (2528), 7 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:49,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:49,762 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:49,762 INFO L175 Difference]: Start difference. First operand has 408 places, 397 transitions, 1182 flow. Second operand 7 states and 2528 transitions. [2022-11-16 11:43:49,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 405 transitions, 1318 flow [2022-11-16 11:43:49,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 405 transitions, 1307 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:43:49,774 INFO L231 Difference]: Finished difference. Result has 411 places, 396 transitions, 1189 flow [2022-11-16 11:43:49,775 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1189, PETRI_PLACES=411, PETRI_TRANSITIONS=396} [2022-11-16 11:43:49,776 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 37 predicate places. [2022-11-16 11:43:49,776 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 396 transitions, 1189 flow [2022-11-16 11:43:49,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 355.5) internal successors, (2133), 6 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:49,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:49,777 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] [2022-11-16 11:43:49,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:43:49,777 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:49,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1928070325, now seen corresponding path program 1 times [2022-11-16 11:43:49,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:49,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369691754] [2022-11-16 11:43:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:49,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:49,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:49,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369691754] [2022-11-16 11:43:49,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369691754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:49,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:49,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:43:49,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506754988] [2022-11-16 11:43:49,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:49,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:43:49,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:49,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:43:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:43:49,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-16 11:43:49,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 396 transitions, 1189 flow. Second operand has 8 states, 8 states have (on average 345.125) internal successors, (2761), 8 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:49,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:49,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-16 11:43:49,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:51,088 INFO L130 PetriNetUnfolder]: 573/2978 cut-off events. [2022-11-16 11:43:51,088 INFO L131 PetriNetUnfolder]: For 772/772 co-relation queries the response was YES. [2022-11-16 11:43:51,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5439 conditions, 2978 events. 573/2978 cut-off events. For 772/772 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 26346 event pairs, 103 based on Foata normal form. 0/2578 useless extension candidates. Maximal degree in co-relation 5273. Up to 308 conditions per place. [2022-11-16 11:43:51,157 INFO L137 encePairwiseOnDemand]: 405/420 looper letters, 67 selfloop transitions, 16 changer transitions 0/420 dead transitions. [2022-11-16 11:43:51,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 420 transitions, 1424 flow [2022-11-16 11:43:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:43:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:43:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3855 transitions. [2022-11-16 11:43:51,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8344155844155844 [2022-11-16 11:43:51,162 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3855 transitions. [2022-11-16 11:43:51,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3855 transitions. [2022-11-16 11:43:51,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:51,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3855 transitions. [2022-11-16 11:43:51,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.45454545454544) internal successors, (3855), 11 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:51,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:51,173 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:51,173 INFO L175 Difference]: Start difference. First operand has 411 places, 396 transitions, 1189 flow. Second operand 11 states and 3855 transitions. [2022-11-16 11:43:51,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 420 transitions, 1424 flow [2022-11-16 11:43:51,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 420 transitions, 1404 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:43:51,185 INFO L231 Difference]: Finished difference. Result has 417 places, 397 transitions, 1214 flow [2022-11-16 11:43:51,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=417, PETRI_TRANSITIONS=397} [2022-11-16 11:43:51,187 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 43 predicate places. [2022-11-16 11:43:51,187 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 397 transitions, 1214 flow [2022-11-16 11:43:51,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 345.125) internal successors, (2761), 8 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:51,187 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:51,188 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:51,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:43:51,188 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:51,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:51,189 INFO L85 PathProgramCache]: Analyzing trace with hash -359360947, now seen corresponding path program 1 times [2022-11-16 11:43:51,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:51,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116077599] [2022-11-16 11:43:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:51,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:51,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:51,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116077599] [2022-11-16 11:43:51,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116077599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:51,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:51,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:43:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714526345] [2022-11-16 11:43:51,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:51,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:43:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:51,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:43:51,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:43:51,325 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-16 11:43:51,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 397 transitions, 1214 flow. Second operand has 8 states, 8 states have (on average 345.25) internal successors, (2762), 8 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:51,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:51,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-16 11:43:51,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:52,574 INFO L130 PetriNetUnfolder]: 503/2888 cut-off events. [2022-11-16 11:43:52,574 INFO L131 PetriNetUnfolder]: For 914/914 co-relation queries the response was YES. [2022-11-16 11:43:52,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5366 conditions, 2888 events. 503/2888 cut-off events. For 914/914 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 25374 event pairs, 142 based on Foata normal form. 0/2559 useless extension candidates. Maximal degree in co-relation 5203. Up to 308 conditions per place. [2022-11-16 11:43:52,672 INFO L137 encePairwiseOnDemand]: 404/420 looper letters, 69 selfloop transitions, 17 changer transitions 0/423 dead transitions. [2022-11-16 11:43:52,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 423 transitions, 1466 flow [2022-11-16 11:43:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:43:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:43:52,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3857 transitions. [2022-11-16 11:43:52,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8348484848484848 [2022-11-16 11:43:52,676 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3857 transitions. [2022-11-16 11:43:52,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3857 transitions. [2022-11-16 11:43:52,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:52,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3857 transitions. [2022-11-16 11:43:52,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.6363636363636) internal successors, (3857), 11 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:52,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:52,687 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:52,687 INFO L175 Difference]: Start difference. First operand has 417 places, 397 transitions, 1214 flow. Second operand 11 states and 3857 transitions. [2022-11-16 11:43:52,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 423 transitions, 1466 flow [2022-11-16 11:43:52,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 423 transitions, 1442 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 11:43:52,702 INFO L231 Difference]: Finished difference. Result has 423 places, 398 transitions, 1237 flow [2022-11-16 11:43:52,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1237, PETRI_PLACES=423, PETRI_TRANSITIONS=398} [2022-11-16 11:43:52,703 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 49 predicate places. [2022-11-16 11:43:52,703 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 398 transitions, 1237 flow [2022-11-16 11:43:52,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 345.25) internal successors, (2762), 8 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:52,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:52,704 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:52,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:43:52,705 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:52,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1738272280, now seen corresponding path program 1 times [2022-11-16 11:43:52,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:52,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426040040] [2022-11-16 11:43:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:52,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:52,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:52,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426040040] [2022-11-16 11:43:52,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426040040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:52,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:52,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:43:52,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977237704] [2022-11-16 11:43:52,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:52,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:52,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:52,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:52,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:52,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:43:52,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 398 transitions, 1237 flow. Second operand has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:52,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:52,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:43:52,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:54,414 INFO L130 PetriNetUnfolder]: 918/3964 cut-off events. [2022-11-16 11:43:54,414 INFO L131 PetriNetUnfolder]: For 1160/1166 co-relation queries the response was YES. [2022-11-16 11:43:54,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6394 conditions, 3964 events. 918/3964 cut-off events. For 1160/1166 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 49013 event pairs, 444 based on Foata normal form. 26/2964 useless extension candidates. Maximal degree in co-relation 6285. Up to 967 conditions per place. [2022-11-16 11:43:54,503 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 58 selfloop transitions, 7 changer transitions 0/415 dead transitions. [2022-11-16 11:43:54,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 415 transitions, 1404 flow [2022-11-16 11:43:54,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:43:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:43:54,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1478 transitions. [2022-11-16 11:43:54,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8797619047619047 [2022-11-16 11:43:54,507 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1478 transitions. [2022-11-16 11:43:54,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1478 transitions. [2022-11-16 11:43:54,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:54,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1478 transitions. [2022-11-16 11:43:54,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 369.5) internal successors, (1478), 4 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) [2022-11-16 11:43:54,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:54,515 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:54,515 INFO L175 Difference]: Start difference. First operand has 423 places, 398 transitions, 1237 flow. Second operand 4 states and 1478 transitions. [2022-11-16 11:43:54,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 415 transitions, 1404 flow [2022-11-16 11:43:54,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 415 transitions, 1374 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-16 11:43:54,529 INFO L231 Difference]: Finished difference. Result has 419 places, 399 transitions, 1237 flow [2022-11-16 11:43:54,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1237, PETRI_PLACES=419, PETRI_TRANSITIONS=399} [2022-11-16 11:43:54,531 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 45 predicate places. [2022-11-16 11:43:54,531 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 399 transitions, 1237 flow [2022-11-16 11:43:54,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:54,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:54,532 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:54,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:43:54,532 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:54,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:54,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1975503023, now seen corresponding path program 1 times [2022-11-16 11:43:54,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:54,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971619628] [2022-11-16 11:43:54,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:54,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:54,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:54,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971619628] [2022-11-16 11:43:54,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971619628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:54,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:54,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:54,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271612427] [2022-11-16 11:43:54,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:54,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:43:54,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:54,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:43:54,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:43:54,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 420 [2022-11-16 11:43:54,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 399 transitions, 1237 flow. Second operand has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:54,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:54,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 420 [2022-11-16 11:43:54,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:55,850 INFO L130 PetriNetUnfolder]: 470/1994 cut-off events. [2022-11-16 11:43:55,850 INFO L131 PetriNetUnfolder]: For 649/991 co-relation queries the response was YES. [2022-11-16 11:43:55,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3869 conditions, 1994 events. 470/1994 cut-off events. For 649/991 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 18935 event pairs, 265 based on Foata normal form. 5/1585 useless extension candidates. Maximal degree in co-relation 3683. Up to 566 conditions per place. [2022-11-16 11:43:55,957 INFO L137 encePairwiseOnDemand]: 403/420 looper letters, 74 selfloop transitions, 17 changer transitions 0/419 dead transitions. [2022-11-16 11:43:55,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 419 transitions, 1473 flow [2022-11-16 11:43:55,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:43:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:43:55,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2421 transitions. [2022-11-16 11:43:55,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823469387755102 [2022-11-16 11:43:55,960 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2421 transitions. [2022-11-16 11:43:55,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2421 transitions. [2022-11-16 11:43:55,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:55,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2421 transitions. [2022-11-16 11:43:55,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 345.85714285714283) internal successors, (2421), 7 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:55,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:55,968 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:55,968 INFO L175 Difference]: Start difference. First operand has 419 places, 399 transitions, 1237 flow. Second operand 7 states and 2421 transitions. [2022-11-16 11:43:55,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 419 transitions, 1473 flow [2022-11-16 11:43:55,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 419 transitions, 1465 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:43:55,981 INFO L231 Difference]: Finished difference. Result has 427 places, 407 transitions, 1328 flow [2022-11-16 11:43:55,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1328, PETRI_PLACES=427, PETRI_TRANSITIONS=407} [2022-11-16 11:43:55,982 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 53 predicate places. [2022-11-16 11:43:55,982 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 407 transitions, 1328 flow [2022-11-16 11:43:55,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:55,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:55,983 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:55,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:43:55,984 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:55,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:55,984 INFO L85 PathProgramCache]: Analyzing trace with hash -384020230, now seen corresponding path program 1 times [2022-11-16 11:43:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:55,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715571585] [2022-11-16 11:43:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:55,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:56,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:56,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715571585] [2022-11-16 11:43:56,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715571585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:56,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:56,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:56,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849111159] [2022-11-16 11:43:56,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:56,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:43:56,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:56,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:43:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:43:56,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 420 [2022-11-16 11:43:56,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 407 transitions, 1328 flow. Second operand has 6 states, 6 states have (on average 336.6666666666667) internal successors, (2020), 6 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:56,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:56,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 420 [2022-11-16 11:43:56,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:57,239 INFO L130 PetriNetUnfolder]: 438/1922 cut-off events. [2022-11-16 11:43:57,240 INFO L131 PetriNetUnfolder]: For 925/1244 co-relation queries the response was YES. [2022-11-16 11:43:57,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4022 conditions, 1922 events. 438/1922 cut-off events. For 925/1244 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 18248 event pairs, 165 based on Foata normal form. 5/1598 useless extension candidates. Maximal degree in co-relation 3836. Up to 476 conditions per place. [2022-11-16 11:43:57,366 INFO L137 encePairwiseOnDemand]: 402/420 looper letters, 94 selfloop transitions, 20 changer transitions 0/442 dead transitions. [2022-11-16 11:43:57,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 442 transitions, 1685 flow [2022-11-16 11:43:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:43:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:43:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2435 transitions. [2022-11-16 11:43:57,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8282312925170068 [2022-11-16 11:43:57,369 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2435 transitions. [2022-11-16 11:43:57,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2435 transitions. [2022-11-16 11:43:57,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:57,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2435 transitions. [2022-11-16 11:43:57,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 347.85714285714283) internal successors, (2435), 7 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:57,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:57,374 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:57,374 INFO L175 Difference]: Start difference. First operand has 427 places, 407 transitions, 1328 flow. Second operand 7 states and 2435 transitions. [2022-11-16 11:43:57,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 442 transitions, 1685 flow [2022-11-16 11:43:57,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 442 transitions, 1673 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:43:57,384 INFO L231 Difference]: Finished difference. Result has 435 places, 418 transitions, 1454 flow [2022-11-16 11:43:57,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1454, PETRI_PLACES=435, PETRI_TRANSITIONS=418} [2022-11-16 11:43:57,385 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 61 predicate places. [2022-11-16 11:43:57,385 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 418 transitions, 1454 flow [2022-11-16 11:43:57,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.6666666666667) internal successors, (2020), 6 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:57,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:57,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:57,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:43:57,386 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:57,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:57,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1683537034, now seen corresponding path program 1 times [2022-11-16 11:43:57,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:57,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6306920] [2022-11-16 11:43:57,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:57,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:43:57,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:57,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6306920] [2022-11-16 11:43:57,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6306920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:57,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:57,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:43:57,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279318900] [2022-11-16 11:43:57,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:57,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:43:57,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:57,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:43:57,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:43:57,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-16 11:43:57,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 418 transitions, 1454 flow. Second operand has 8 states, 8 states have (on average 345.25) internal successors, (2762), 8 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:57,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:43:57,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-16 11:43:57,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:59,765 INFO L130 PetriNetUnfolder]: 1222/5770 cut-off events. [2022-11-16 11:43:59,766 INFO L131 PetriNetUnfolder]: For 2001/2259 co-relation queries the response was YES. [2022-11-16 11:43:59,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9988 conditions, 5770 events. 1222/5770 cut-off events. For 2001/2259 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 71429 event pairs, 363 based on Foata normal form. 0/4547 useless extension candidates. Maximal degree in co-relation 7950. Up to 711 conditions per place. [2022-11-16 11:43:59,930 INFO L137 encePairwiseOnDemand]: 405/420 looper letters, 67 selfloop transitions, 16 changer transitions 0/442 dead transitions. [2022-11-16 11:43:59,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 442 transitions, 1682 flow [2022-11-16 11:43:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:43:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:43:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3855 transitions. [2022-11-16 11:43:59,934 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8344155844155844 [2022-11-16 11:43:59,934 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3855 transitions. [2022-11-16 11:43:59,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3855 transitions. [2022-11-16 11:43:59,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:59,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3855 transitions. [2022-11-16 11:43:59,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.45454545454544) internal successors, (3855), 11 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:59,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:59,945 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:59,945 INFO L175 Difference]: Start difference. First operand has 435 places, 418 transitions, 1454 flow. Second operand 11 states and 3855 transitions. [2022-11-16 11:43:59,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 442 transitions, 1682 flow [2022-11-16 11:43:59,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 442 transitions, 1674 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:43:59,962 INFO L231 Difference]: Finished difference. Result has 446 places, 419 transitions, 1491 flow [2022-11-16 11:43:59,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1491, PETRI_PLACES=446, PETRI_TRANSITIONS=419} [2022-11-16 11:43:59,964 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 72 predicate places. [2022-11-16 11:43:59,964 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 419 transitions, 1491 flow [2022-11-16 11:43:59,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 345.25) internal successors, (2762), 8 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:59,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:59,965 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:59,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:43:59,965 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:43:59,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:59,966 INFO L85 PathProgramCache]: Analyzing trace with hash 650041727, now seen corresponding path program 1 times [2022-11-16 11:43:59,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:59,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422704950] [2022-11-16 11:43:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:59,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:00,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:00,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422704950] [2022-11-16 11:44:00,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422704950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:00,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:00,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:00,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841701101] [2022-11-16 11:44:00,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:00,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:44:00,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:00,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:44:00,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:44:00,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-16 11:44:00,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 419 transitions, 1491 flow. Second operand has 8 states, 8 states have (on average 345.375) internal successors, (2763), 8 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:00,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:00,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-16 11:44:00,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:02,306 INFO L130 PetriNetUnfolder]: 1072/5567 cut-off events. [2022-11-16 11:44:02,306 INFO L131 PetriNetUnfolder]: For 2141/2525 co-relation queries the response was YES. [2022-11-16 11:44:02,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9917 conditions, 5567 events. 1072/5567 cut-off events. For 2141/2525 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 67480 event pairs, 444 based on Foata normal form. 0/4547 useless extension candidates. Maximal degree in co-relation 7895. Up to 685 conditions per place. [2022-11-16 11:44:02,732 INFO L137 encePairwiseOnDemand]: 404/420 looper letters, 69 selfloop transitions, 17 changer transitions 0/445 dead transitions. [2022-11-16 11:44:02,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 445 transitions, 1736 flow [2022-11-16 11:44:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:44:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:44:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3857 transitions. [2022-11-16 11:44:02,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8348484848484848 [2022-11-16 11:44:02,738 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3857 transitions. [2022-11-16 11:44:02,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3857 transitions. [2022-11-16 11:44:02,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:02,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3857 transitions. [2022-11-16 11:44:02,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.6363636363636) internal successors, (3857), 11 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:02,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:02,761 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:02,762 INFO L175 Difference]: Start difference. First operand has 446 places, 419 transitions, 1491 flow. Second operand 11 states and 3857 transitions. [2022-11-16 11:44:02,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 445 transitions, 1736 flow [2022-11-16 11:44:02,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 445 transitions, 1712 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 11:44:02,781 INFO L231 Difference]: Finished difference. Result has 452 places, 420 transitions, 1514 flow [2022-11-16 11:44:02,782 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1514, PETRI_PLACES=452, PETRI_TRANSITIONS=420} [2022-11-16 11:44:02,783 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 78 predicate places. [2022-11-16 11:44:02,783 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 420 transitions, 1514 flow [2022-11-16 11:44:02,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 345.375) internal successors, (2763), 8 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:02,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:02,784 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:02,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 11:44:02,784 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:02,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:02,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1692828387, now seen corresponding path program 1 times [2022-11-16 11:44:02,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:02,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674815078] [2022-11-16 11:44:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:02,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:02,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:02,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674815078] [2022-11-16 11:44:02,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674815078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:02,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:02,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:44:02,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29699356] [2022-11-16 11:44:02,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:02,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:02,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:02,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:02,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:02,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 420 [2022-11-16 11:44:02,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 420 transitions, 1514 flow. Second operand has 6 states, 6 states have (on average 336.6666666666667) internal successors, (2020), 6 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:02,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:02,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 420 [2022-11-16 11:44:02,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:04,703 INFO L130 PetriNetUnfolder]: 1398/5010 cut-off events. [2022-11-16 11:44:04,703 INFO L131 PetriNetUnfolder]: For 2345/2351 co-relation queries the response was YES. [2022-11-16 11:44:04,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9264 conditions, 5010 events. 1398/5010 cut-off events. For 2345/2351 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 63106 event pairs, 789 based on Foata normal form. 26/3863 useless extension candidates. Maximal degree in co-relation 9141. Up to 1567 conditions per place. [2022-11-16 11:44:04,892 INFO L137 encePairwiseOnDemand]: 403/420 looper letters, 73 selfloop transitions, 17 changer transitions 1/440 dead transitions. [2022-11-16 11:44:04,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 440 transitions, 1745 flow [2022-11-16 11:44:04,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:44:04,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:44:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2421 transitions. [2022-11-16 11:44:04,895 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823469387755102 [2022-11-16 11:44:04,896 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2421 transitions. [2022-11-16 11:44:04,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2421 transitions. [2022-11-16 11:44:04,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:04,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2421 transitions. [2022-11-16 11:44:04,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 345.85714285714283) internal successors, (2421), 7 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:04,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:04,902 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:04,903 INFO L175 Difference]: Start difference. First operand has 452 places, 420 transitions, 1514 flow. Second operand 7 states and 2421 transitions. [2022-11-16 11:44:04,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 440 transitions, 1745 flow [2022-11-16 11:44:04,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 440 transitions, 1717 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-16 11:44:04,921 INFO L231 Difference]: Finished difference. Result has 455 places, 428 transitions, 1585 flow [2022-11-16 11:44:04,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1585, PETRI_PLACES=455, PETRI_TRANSITIONS=428} [2022-11-16 11:44:04,922 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 81 predicate places. [2022-11-16 11:44:04,923 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 428 transitions, 1585 flow [2022-11-16 11:44:04,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.6666666666667) internal successors, (2020), 6 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:04,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:04,923 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:04,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:44:04,924 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:04,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:04,924 INFO L85 PathProgramCache]: Analyzing trace with hash -103309697, now seen corresponding path program 1 times [2022-11-16 11:44:04,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:04,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682960075] [2022-11-16 11:44:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:04,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:05,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:05,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682960075] [2022-11-16 11:44:05,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682960075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:05,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:05,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:44:05,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054449491] [2022-11-16 11:44:05,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:05,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:05,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:05,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:05,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:05,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:44:05,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 428 transitions, 1585 flow. Second operand has 6 states, 6 states have (on average 356.1666666666667) internal successors, (2137), 6 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:05,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:05,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:44:05,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:05,773 INFO L130 PetriNetUnfolder]: 171/1457 cut-off events. [2022-11-16 11:44:05,774 INFO L131 PetriNetUnfolder]: For 675/675 co-relation queries the response was YES. [2022-11-16 11:44:05,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 1457 events. 171/1457 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10261 event pairs, 45 based on Foata normal form. 0/1430 useless extension candidates. Maximal degree in co-relation 2798. Up to 211 conditions per place. [2022-11-16 11:44:05,826 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 53 selfloop transitions, 8 changer transitions 0/439 dead transitions. [2022-11-16 11:44:05,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 439 transitions, 1743 flow [2022-11-16 11:44:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:44:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:44:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2528 transitions. [2022-11-16 11:44:05,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-16 11:44:05,830 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2528 transitions. [2022-11-16 11:44:05,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2528 transitions. [2022-11-16 11:44:05,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:05,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2528 transitions. [2022-11-16 11:44:05,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.14285714285717) internal successors, (2528), 7 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:05,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:05,835 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:05,835 INFO L175 Difference]: Start difference. First operand has 455 places, 428 transitions, 1585 flow. Second operand 7 states and 2528 transitions. [2022-11-16 11:44:05,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 439 transitions, 1743 flow [2022-11-16 11:44:05,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 439 transitions, 1736 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:44:05,850 INFO L231 Difference]: Finished difference. Result has 459 places, 428 transitions, 1594 flow [2022-11-16 11:44:05,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1594, PETRI_PLACES=459, PETRI_TRANSITIONS=428} [2022-11-16 11:44:05,851 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 85 predicate places. [2022-11-16 11:44:05,851 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 428 transitions, 1594 flow [2022-11-16 11:44:05,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.1666666666667) internal successors, (2137), 6 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:05,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:05,852 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:05,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 11:44:05,852 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:05,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:05,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1665103887, now seen corresponding path program 1 times [2022-11-16 11:44:05,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:05,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561181098] [2022-11-16 11:44:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:05,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:05,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:05,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561181098] [2022-11-16 11:44:05,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561181098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:05,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:05,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:44:05,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411155031] [2022-11-16 11:44:05,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:05,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:05,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:05,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:05,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:05,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 420 [2022-11-16 11:44:05,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 428 transitions, 1594 flow. Second operand has 6 states, 6 states have (on average 336.8333333333333) internal successors, (2021), 6 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:05,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:05,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 420 [2022-11-16 11:44:05,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:07,766 INFO L130 PetriNetUnfolder]: 1302/4875 cut-off events. [2022-11-16 11:44:07,766 INFO L131 PetriNetUnfolder]: For 2749/2764 co-relation queries the response was YES. [2022-11-16 11:44:07,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9558 conditions, 4875 events. 1302/4875 cut-off events. For 2749/2764 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 60488 event pairs, 585 based on Foata normal form. 22/3906 useless extension candidates. Maximal degree in co-relation 9431. Up to 1317 conditions per place. [2022-11-16 11:44:07,923 INFO L137 encePairwiseOnDemand]: 402/420 looper letters, 93 selfloop transitions, 20 changer transitions 1/463 dead transitions. [2022-11-16 11:44:07,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 463 transitions, 1944 flow [2022-11-16 11:44:07,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:44:07,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:44:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2435 transitions. [2022-11-16 11:44:07,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8282312925170068 [2022-11-16 11:44:07,926 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2435 transitions. [2022-11-16 11:44:07,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2435 transitions. [2022-11-16 11:44:07,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:07,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2435 transitions. [2022-11-16 11:44:07,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 347.85714285714283) internal successors, (2435), 7 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:07,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:07,931 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:07,931 INFO L175 Difference]: Start difference. First operand has 459 places, 428 transitions, 1594 flow. Second operand 7 states and 2435 transitions. [2022-11-16 11:44:07,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 463 transitions, 1944 flow [2022-11-16 11:44:07,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 463 transitions, 1935 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:44:07,952 INFO L231 Difference]: Finished difference. Result has 465 places, 439 transitions, 1721 flow [2022-11-16 11:44:07,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1721, PETRI_PLACES=465, PETRI_TRANSITIONS=439} [2022-11-16 11:44:07,953 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 91 predicate places. [2022-11-16 11:44:07,954 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 439 transitions, 1721 flow [2022-11-16 11:44:07,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.8333333333333) internal successors, (2021), 6 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:07,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:07,954 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:07,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 11:44:07,955 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:07,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:07,955 INFO L85 PathProgramCache]: Analyzing trace with hash 296815839, now seen corresponding path program 1 times [2022-11-16 11:44:07,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:07,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156746913] [2022-11-16 11:44:07,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:07,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:08,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:08,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156746913] [2022-11-16 11:44:08,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156746913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:08,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:08,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:44:08,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366244712] [2022-11-16 11:44:08,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:08,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:08,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:08,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:08,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:08,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:44:08,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 439 transitions, 1721 flow. Second operand has 6 states, 6 states have (on average 356.3333333333333) internal successors, (2138), 6 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:08,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:08,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:44:08,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:11,751 INFO L130 PetriNetUnfolder]: 1433/11192 cut-off events. [2022-11-16 11:44:11,751 INFO L131 PetriNetUnfolder]: For 6970/7199 co-relation queries the response was YES. [2022-11-16 11:44:12,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22532 conditions, 11192 events. 1433/11192 cut-off events. For 6970/7199 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 149587 event pairs, 801 based on Foata normal form. 45/10193 useless extension candidates. Maximal degree in co-relation 22240. Up to 1113 conditions per place. [2022-11-16 11:44:12,079 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 53 selfloop transitions, 8 changer transitions 0/450 dead transitions. [2022-11-16 11:44:12,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 450 transitions, 1879 flow [2022-11-16 11:44:12,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:44:12,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:44:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2528 transitions. [2022-11-16 11:44:12,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-16 11:44:12,083 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2528 transitions. [2022-11-16 11:44:12,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2528 transitions. [2022-11-16 11:44:12,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:12,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2528 transitions. [2022-11-16 11:44:12,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.14285714285717) internal successors, (2528), 7 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:12,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:12,090 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:12,090 INFO L175 Difference]: Start difference. First operand has 465 places, 439 transitions, 1721 flow. Second operand 7 states and 2528 transitions. [2022-11-16 11:44:12,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 450 transitions, 1879 flow [2022-11-16 11:44:12,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 450 transitions, 1871 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:44:12,187 INFO L231 Difference]: Finished difference. Result has 469 places, 439 transitions, 1729 flow [2022-11-16 11:44:12,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1729, PETRI_PLACES=469, PETRI_TRANSITIONS=439} [2022-11-16 11:44:12,189 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 95 predicate places. [2022-11-16 11:44:12,189 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 439 transitions, 1729 flow [2022-11-16 11:44:12,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.3333333333333) internal successors, (2138), 6 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:12,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:12,190 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:12,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 11:44:12,190 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:12,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:12,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2011984201, now seen corresponding path program 1 times [2022-11-16 11:44:12,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:12,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105103471] [2022-11-16 11:44:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:12,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:12,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:12,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105103471] [2022-11-16 11:44:12,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105103471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:12,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:12,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:44:12,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196334055] [2022-11-16 11:44:12,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:12,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:12,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:12,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:12,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:12,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:44:12,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 439 transitions, 1729 flow. Second operand has 6 states, 6 states have (on average 356.5) internal successors, (2139), 6 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:12,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:12,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:44:12,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:13,127 INFO L130 PetriNetUnfolder]: 168/1447 cut-off events. [2022-11-16 11:44:13,128 INFO L131 PetriNetUnfolder]: For 757/757 co-relation queries the response was YES. [2022-11-16 11:44:13,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3102 conditions, 1447 events. 168/1447 cut-off events. For 757/757 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10143 event pairs, 63 based on Foata normal form. 0/1428 useless extension candidates. Maximal degree in co-relation 2816. Up to 197 conditions per place. [2022-11-16 11:44:13,208 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 49 selfloop transitions, 6 changer transitions 0/444 dead transitions. [2022-11-16 11:44:13,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 444 transitions, 1855 flow [2022-11-16 11:44:13,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:44:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:44:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2166 transitions. [2022-11-16 11:44:13,211 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595238095238096 [2022-11-16 11:44:13,211 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2166 transitions. [2022-11-16 11:44:13,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2166 transitions. [2022-11-16 11:44:13,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:13,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2166 transitions. [2022-11-16 11:44:13,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 361.0) internal successors, (2166), 6 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,214 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,215 INFO L175 Difference]: Start difference. First operand has 469 places, 439 transitions, 1729 flow. Second operand 6 states and 2166 transitions. [2022-11-16 11:44:13,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 444 transitions, 1855 flow [2022-11-16 11:44:13,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 444 transitions, 1849 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:44:13,227 INFO L231 Difference]: Finished difference. Result has 470 places, 438 transitions, 1733 flow [2022-11-16 11:44:13,228 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1733, PETRI_PLACES=470, PETRI_TRANSITIONS=438} [2022-11-16 11:44:13,228 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 96 predicate places. [2022-11-16 11:44:13,228 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 438 transitions, 1733 flow [2022-11-16 11:44:13,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.5) internal successors, (2139), 6 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:13,229 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:13,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 11:44:13,229 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:13,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1317158476, now seen corresponding path program 1 times [2022-11-16 11:44:13,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:13,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945279455] [2022-11-16 11:44:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:13,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:13,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:13,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945279455] [2022-11-16 11:44:13,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945279455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:13,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:13,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:44:13,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864747999] [2022-11-16 11:44:13,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:13,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:13,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:13,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:13,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:13,318 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:44:13,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 438 transitions, 1733 flow. Second operand has 6 states, 6 states have (on average 356.5) internal successors, (2139), 6 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:13,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:44:13,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:15,985 INFO L130 PetriNetUnfolder]: 1736/8846 cut-off events. [2022-11-16 11:44:15,985 INFO L131 PetriNetUnfolder]: For 5937/7209 co-relation queries the response was YES. [2022-11-16 11:44:16,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18385 conditions, 8846 events. 1736/8846 cut-off events. For 5937/7209 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 109021 event pairs, 702 based on Foata normal form. 6/7837 useless extension candidates. Maximal degree in co-relation 18085. Up to 1459 conditions per place. [2022-11-16 11:44:16,311 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 57 selfloop transitions, 8 changer transitions 0/452 dead transitions. [2022-11-16 11:44:16,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 452 transitions, 1911 flow [2022-11-16 11:44:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:44:16,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:44:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2528 transitions. [2022-11-16 11:44:16,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-16 11:44:16,314 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2528 transitions. [2022-11-16 11:44:16,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2528 transitions. [2022-11-16 11:44:16,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:16,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2528 transitions. [2022-11-16 11:44:16,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.14285714285717) internal successors, (2528), 7 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:16,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:16,321 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:16,321 INFO L175 Difference]: Start difference. First operand has 470 places, 438 transitions, 1733 flow. Second operand 7 states and 2528 transitions. [2022-11-16 11:44:16,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 452 transitions, 1911 flow [2022-11-16 11:44:16,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 452 transitions, 1900 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:44:16,376 INFO L231 Difference]: Finished difference. Result has 471 places, 438 transitions, 1738 flow [2022-11-16 11:44:16,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1738, PETRI_PLACES=471, PETRI_TRANSITIONS=438} [2022-11-16 11:44:16,377 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 97 predicate places. [2022-11-16 11:44:16,377 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 438 transitions, 1738 flow [2022-11-16 11:44:16,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.5) internal successors, (2139), 6 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:16,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:16,378 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:16,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 11:44:16,379 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash 144362478, now seen corresponding path program 1 times [2022-11-16 11:44:16,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:16,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320686001] [2022-11-16 11:44:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:16,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:16,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320686001] [2022-11-16 11:44:16,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320686001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:16,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:16,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:16,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736108314] [2022-11-16 11:44:16,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:16,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:44:16,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:16,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:44:16,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:44:16,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-16 11:44:16,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 438 transitions, 1738 flow. Second operand has 8 states, 8 states have (on average 346.5) internal successors, (2772), 8 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:16,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:16,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-16 11:44:16,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:17,487 INFO L130 PetriNetUnfolder]: 228/1498 cut-off events. [2022-11-16 11:44:17,487 INFO L131 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-11-16 11:44:17,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3338 conditions, 1498 events. 228/1498 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 10707 event pairs, 51 based on Foata normal form. 8/1486 useless extension candidates. Maximal degree in co-relation 3049. Up to 155 conditions per place. [2022-11-16 11:44:17,567 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 65 selfloop transitions, 17 changer transitions 0/457 dead transitions. [2022-11-16 11:44:17,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 457 transitions, 1950 flow [2022-11-16 11:44:17,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:44:17,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:44:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3850 transitions. [2022-11-16 11:44:17,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-16 11:44:17,572 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3850 transitions. [2022-11-16 11:44:17,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3850 transitions. [2022-11-16 11:44:17,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:17,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3850 transitions. [2022-11-16 11:44:17,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:17,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:17,583 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:17,583 INFO L175 Difference]: Start difference. First operand has 471 places, 438 transitions, 1738 flow. Second operand 11 states and 3850 transitions. [2022-11-16 11:44:17,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 457 transitions, 1950 flow [2022-11-16 11:44:17,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 457 transitions, 1937 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:44:17,600 INFO L231 Difference]: Finished difference. Result has 476 places, 436 transitions, 1744 flow [2022-11-16 11:44:17,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1744, PETRI_PLACES=476, PETRI_TRANSITIONS=436} [2022-11-16 11:44:17,601 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 102 predicate places. [2022-11-16 11:44:17,602 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 436 transitions, 1744 flow [2022-11-16 11:44:17,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.5) internal successors, (2772), 8 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:17,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:17,603 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:17,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 11:44:17,603 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:17,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:17,603 INFO L85 PathProgramCache]: Analyzing trace with hash 705067017, now seen corresponding path program 1 times [2022-11-16 11:44:17,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:17,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049392578] [2022-11-16 11:44:17,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:17,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:17,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:17,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049392578] [2022-11-16 11:44:17,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049392578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:17,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:17,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:44:17,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164756261] [2022-11-16 11:44:17,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:17,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:17,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:17,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:17,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:17,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:44:17,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 436 transitions, 1744 flow. Second operand has 6 states, 6 states have (on average 356.6666666666667) internal successors, (2140), 6 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:17,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:17,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:44:17,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:20,697 INFO L130 PetriNetUnfolder]: 1406/10909 cut-off events. [2022-11-16 11:44:20,697 INFO L131 PetriNetUnfolder]: For 7189/7960 co-relation queries the response was YES. [2022-11-16 11:44:20,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22176 conditions, 10909 events. 1406/10909 cut-off events. For 7189/7960 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 146002 event pairs, 798 based on Foata normal form. 47/10191 useless extension candidates. Maximal degree in co-relation 21869. Up to 1029 conditions per place. [2022-11-16 11:44:21,019 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 52 selfloop transitions, 6 changer transitions 0/443 dead transitions. [2022-11-16 11:44:21,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 443 transitions, 1886 flow [2022-11-16 11:44:21,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:44:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:44:21,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2166 transitions. [2022-11-16 11:44:21,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595238095238096 [2022-11-16 11:44:21,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2166 transitions. [2022-11-16 11:44:21,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2166 transitions. [2022-11-16 11:44:21,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:21,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2166 transitions. [2022-11-16 11:44:21,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 361.0) internal successors, (2166), 6 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:21,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:21,029 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:21,029 INFO L175 Difference]: Start difference. First operand has 476 places, 436 transitions, 1744 flow. Second operand 6 states and 2166 transitions. [2022-11-16 11:44:21,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 443 transitions, 1886 flow [2022-11-16 11:44:21,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 443 transitions, 1849 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-16 11:44:21,123 INFO L231 Difference]: Finished difference. Result has 471 places, 435 transitions, 1717 flow [2022-11-16 11:44:21,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1717, PETRI_PLACES=471, PETRI_TRANSITIONS=435} [2022-11-16 11:44:21,124 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 97 predicate places. [2022-11-16 11:44:21,124 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 435 transitions, 1717 flow [2022-11-16 11:44:21,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.6666666666667) internal successors, (2140), 6 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:21,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:21,126 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:21,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 11:44:21,126 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:21,126 INFO L85 PathProgramCache]: Analyzing trace with hash 180270591, now seen corresponding path program 1 times [2022-11-16 11:44:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:21,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402221882] [2022-11-16 11:44:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:21,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:21,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402221882] [2022-11-16 11:44:21,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402221882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:21,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:21,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:21,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152702084] [2022-11-16 11:44:21,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:21,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:44:21,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:21,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:44:21,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:44:21,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-16 11:44:21,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 435 transitions, 1717 flow. Second operand has 8 states, 8 states have (on average 346.625) internal successors, (2773), 8 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:21,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:21,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-16 11:44:21,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:22,170 INFO L130 PetriNetUnfolder]: 198/1459 cut-off events. [2022-11-16 11:44:22,170 INFO L131 PetriNetUnfolder]: For 700/700 co-relation queries the response was YES. [2022-11-16 11:44:22,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3164 conditions, 1459 events. 198/1459 cut-off events. For 700/700 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10244 event pairs, 51 based on Foata normal form. 8/1448 useless extension candidates. Maximal degree in co-relation 2878. Up to 141 conditions per place. [2022-11-16 11:44:22,239 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 66 selfloop transitions, 17 changer transitions 0/457 dead transitions. [2022-11-16 11:44:22,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 457 transitions, 1951 flow [2022-11-16 11:44:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:44:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:44:22,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3851 transitions. [2022-11-16 11:44:22,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8335497835497836 [2022-11-16 11:44:22,244 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3851 transitions. [2022-11-16 11:44:22,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3851 transitions. [2022-11-16 11:44:22,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:22,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3851 transitions. [2022-11-16 11:44:22,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.09090909090907) internal successors, (3851), 11 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:22,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:22,254 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:22,254 INFO L175 Difference]: Start difference. First operand has 471 places, 435 transitions, 1717 flow. Second operand 11 states and 3851 transitions. [2022-11-16 11:44:22,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 457 transitions, 1951 flow [2022-11-16 11:44:22,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 457 transitions, 1933 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:44:22,271 INFO L231 Difference]: Finished difference. Result has 475 places, 434 transitions, 1729 flow [2022-11-16 11:44:22,272 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1729, PETRI_PLACES=475, PETRI_TRANSITIONS=434} [2022-11-16 11:44:22,272 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 101 predicate places. [2022-11-16 11:44:22,272 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 434 transitions, 1729 flow [2022-11-16 11:44:22,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.625) internal successors, (2773), 8 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:22,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:22,273 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:22,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 11:44:22,274 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:22,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:22,274 INFO L85 PathProgramCache]: Analyzing trace with hash -440797442, now seen corresponding path program 1 times [2022-11-16 11:44:22,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:22,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801963398] [2022-11-16 11:44:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:22,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:22,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:22,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801963398] [2022-11-16 11:44:22,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801963398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:22,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:22,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:44:22,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212394920] [2022-11-16 11:44:22,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:22,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:22,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:22,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:22,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:22,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 420 [2022-11-16 11:44:22,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 434 transitions, 1729 flow. Second operand has 6 states, 6 states have (on average 356.8333333333333) internal successors, (2141), 6 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:22,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:22,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 420 [2022-11-16 11:44:22,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:24,572 INFO L130 PetriNetUnfolder]: 1650/6957 cut-off events. [2022-11-16 11:44:24,573 INFO L131 PetriNetUnfolder]: For 5249/6500 co-relation queries the response was YES. [2022-11-16 11:44:24,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14880 conditions, 6957 events. 1650/6957 cut-off events. For 5249/6500 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 81449 event pairs, 726 based on Foata normal form. 6/5982 useless extension candidates. Maximal degree in co-relation 14584. Up to 1334 conditions per place. [2022-11-16 11:44:24,774 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 52 selfloop transitions, 6 changer transitions 0/441 dead transitions. [2022-11-16 11:44:24,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 441 transitions, 1869 flow [2022-11-16 11:44:24,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:44:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:44:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2166 transitions. [2022-11-16 11:44:24,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595238095238096 [2022-11-16 11:44:24,777 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2166 transitions. [2022-11-16 11:44:24,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2166 transitions. [2022-11-16 11:44:24,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:24,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2166 transitions. [2022-11-16 11:44:24,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 361.0) internal successors, (2166), 6 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:24,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:24,780 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:24,780 INFO L175 Difference]: Start difference. First operand has 475 places, 434 transitions, 1729 flow. Second operand 6 states and 2166 transitions. [2022-11-16 11:44:24,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 441 transitions, 1869 flow [2022-11-16 11:44:24,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 441 transitions, 1832 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-16 11:44:24,816 INFO L231 Difference]: Finished difference. Result has 470 places, 433 transitions, 1702 flow [2022-11-16 11:44:24,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1702, PETRI_PLACES=470, PETRI_TRANSITIONS=433} [2022-11-16 11:44:24,817 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 96 predicate places. [2022-11-16 11:44:24,817 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 433 transitions, 1702 flow [2022-11-16 11:44:24,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.8333333333333) internal successors, (2141), 6 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:24,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:24,818 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:24,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 11:44:24,819 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:24,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:24,819 INFO L85 PathProgramCache]: Analyzing trace with hash 115589454, now seen corresponding path program 1 times [2022-11-16 11:44:24,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:24,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978647979] [2022-11-16 11:44:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:24,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:24,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:24,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978647979] [2022-11-16 11:44:24,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978647979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:24,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:24,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:24,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571986698] [2022-11-16 11:44:24,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:24,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:44:24,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:44:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:44:24,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-16 11:44:24,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 433 transitions, 1702 flow. Second operand has 8 states, 8 states have (on average 346.625) internal successors, (2773), 8 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:24,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:24,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-16 11:44:24,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:29,045 INFO L130 PetriNetUnfolder]: 1956/14995 cut-off events. [2022-11-16 11:44:29,045 INFO L131 PetriNetUnfolder]: For 11820/12777 co-relation queries the response was YES. [2022-11-16 11:44:29,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31830 conditions, 14995 events. 1956/14995 cut-off events. For 11820/12777 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 214520 event pairs, 716 based on Foata normal form. 36/14063 useless extension candidates. Maximal degree in co-relation 31546. Up to 1108 conditions per place. [2022-11-16 11:44:29,427 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 73 selfloop transitions, 17 changer transitions 0/459 dead transitions. [2022-11-16 11:44:29,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 459 transitions, 1993 flow [2022-11-16 11:44:29,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:44:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:44:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3850 transitions. [2022-11-16 11:44:29,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-16 11:44:29,431 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3850 transitions. [2022-11-16 11:44:29,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3850 transitions. [2022-11-16 11:44:29,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:29,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3850 transitions. [2022-11-16 11:44:29,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:29,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:29,441 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:29,441 INFO L175 Difference]: Start difference. First operand has 470 places, 433 transitions, 1702 flow. Second operand 11 states and 3850 transitions. [2022-11-16 11:44:29,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 459 transitions, 1993 flow [2022-11-16 11:44:29,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 459 transitions, 1947 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:44:29,563 INFO L231 Difference]: Finished difference. Result has 474 places, 431 transitions, 1703 flow [2022-11-16 11:44:29,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1703, PETRI_PLACES=474, PETRI_TRANSITIONS=431} [2022-11-16 11:44:29,564 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 100 predicate places. [2022-11-16 11:44:29,565 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 431 transitions, 1703 flow [2022-11-16 11:44:29,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.625) internal successors, (2773), 8 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:29,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:29,565 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:29,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 11:44:29,566 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:29,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:29,566 INFO L85 PathProgramCache]: Analyzing trace with hash -711693050, now seen corresponding path program 1 times [2022-11-16 11:44:29,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:29,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136078602] [2022-11-16 11:44:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:29,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:29,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:29,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136078602] [2022-11-16 11:44:29,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136078602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:29,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:29,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:29,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401711277] [2022-11-16 11:44:29,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:29,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:44:29,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:29,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:44:29,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:44:29,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-16 11:44:29,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 431 transitions, 1703 flow. Second operand has 8 states, 8 states have (on average 346.75) internal successors, (2774), 8 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:29,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:29,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-16 11:44:29,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:32,412 INFO L130 PetriNetUnfolder]: 1632/10317 cut-off events. [2022-11-16 11:44:32,412 INFO L131 PetriNetUnfolder]: For 7389/8209 co-relation queries the response was YES. [2022-11-16 11:44:32,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21597 conditions, 10317 events. 1632/10317 cut-off events. For 7389/8209 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 135916 event pairs, 482 based on Foata normal form. 36/9511 useless extension candidates. Maximal degree in co-relation 21314. Up to 744 conditions per place. [2022-11-16 11:44:32,652 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 74 selfloop transitions, 17 changer transitions 0/460 dead transitions. [2022-11-16 11:44:32,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 460 transitions, 1990 flow [2022-11-16 11:44:32,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:44:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:44:32,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3851 transitions. [2022-11-16 11:44:32,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8335497835497836 [2022-11-16 11:44:32,656 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3851 transitions. [2022-11-16 11:44:32,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3851 transitions. [2022-11-16 11:44:32,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:32,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3851 transitions. [2022-11-16 11:44:32,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.09090909090907) internal successors, (3851), 11 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:32,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:32,668 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:32,668 INFO L175 Difference]: Start difference. First operand has 474 places, 431 transitions, 1703 flow. Second operand 11 states and 3851 transitions. [2022-11-16 11:44:32,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 460 transitions, 1990 flow [2022-11-16 11:44:32,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 460 transitions, 1944 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-16 11:44:32,751 INFO L231 Difference]: Finished difference. Result has 473 places, 430 transitions, 1689 flow [2022-11-16 11:44:32,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1689, PETRI_PLACES=473, PETRI_TRANSITIONS=430} [2022-11-16 11:44:32,752 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 99 predicate places. [2022-11-16 11:44:32,753 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 430 transitions, 1689 flow [2022-11-16 11:44:32,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.75) internal successors, (2774), 8 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:32,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:32,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:32,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-16 11:44:32,754 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:32,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:32,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1753844957, now seen corresponding path program 1 times [2022-11-16 11:44:32,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:32,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327378063] [2022-11-16 11:44:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:32,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:32,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:32,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327378063] [2022-11-16 11:44:32,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327378063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:32,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:32,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:32,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989236173] [2022-11-16 11:44:32,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:32,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:44:32,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:32,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:44:32,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:44:32,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-16 11:44:32,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 430 transitions, 1689 flow. Second operand has 8 states, 8 states have (on average 346.75) internal successors, (2774), 8 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:32,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:32,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-16 11:44:32,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:35,522 INFO L130 PetriNetUnfolder]: 2310/7464 cut-off events. [2022-11-16 11:44:35,522 INFO L131 PetriNetUnfolder]: For 8560/12799 co-relation queries the response was YES. [2022-11-16 11:44:35,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16713 conditions, 7464 events. 2310/7464 cut-off events. For 8560/12799 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 88351 event pairs, 993 based on Foata normal form. 56/6123 useless extension candidates. Maximal degree in co-relation 16432. Up to 1031 conditions per place. [2022-11-16 11:44:35,689 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 73 selfloop transitions, 17 changer transitions 0/456 dead transitions. [2022-11-16 11:44:35,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 456 transitions, 1973 flow [2022-11-16 11:44:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:44:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:44:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3850 transitions. [2022-11-16 11:44:35,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-16 11:44:35,694 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3850 transitions. [2022-11-16 11:44:35,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3850 transitions. [2022-11-16 11:44:35,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:35,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3850 transitions. [2022-11-16 11:44:35,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:35,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:35,700 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:35,700 INFO L175 Difference]: Start difference. First operand has 473 places, 430 transitions, 1689 flow. Second operand 11 states and 3850 transitions. [2022-11-16 11:44:35,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 456 transitions, 1973 flow [2022-11-16 11:44:35,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 456 transitions, 1901 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-16 11:44:35,728 INFO L231 Difference]: Finished difference. Result has 472 places, 428 transitions, 1664 flow [2022-11-16 11:44:35,729 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1664, PETRI_PLACES=472, PETRI_TRANSITIONS=428} [2022-11-16 11:44:35,729 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 98 predicate places. [2022-11-16 11:44:35,729 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 428 transitions, 1664 flow [2022-11-16 11:44:35,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.75) internal successors, (2774), 8 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:35,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:35,730 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:35,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-16 11:44:35,731 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:44:35,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1465382456, now seen corresponding path program 1 times [2022-11-16 11:44:35,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:35,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610671536] [2022-11-16 11:44:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:35,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:35,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:35,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610671536] [2022-11-16 11:44:35,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610671536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:35,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:35,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:35,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224619434] [2022-11-16 11:44:35,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:35,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:44:35,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:35,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:44:35,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:44:35,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 420 [2022-11-16 11:44:35,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 428 transitions, 1664 flow. Second operand has 8 states, 8 states have (on average 346.875) internal successors, (2775), 8 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:35,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:35,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 420 [2022-11-16 11:44:35,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:38,187 INFO L130 PetriNetUnfolder]: 1980/7165 cut-off events. [2022-11-16 11:44:38,187 INFO L131 PetriNetUnfolder]: For 6224/7877 co-relation queries the response was YES. [2022-11-16 11:44:38,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15891 conditions, 7165 events. 1980/7165 cut-off events. For 6224/7877 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 85271 event pairs, 573 based on Foata normal form. 56/6034 useless extension candidates. Maximal degree in co-relation 15612. Up to 1031 conditions per place. [2022-11-16 11:44:38,359 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 0 selfloop transitions, 0 changer transitions 457/457 dead transitions. [2022-11-16 11:44:38,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 457 transitions, 1944 flow [2022-11-16 11:44:38,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:44:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:44:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3851 transitions. [2022-11-16 11:44:38,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8335497835497836 [2022-11-16 11:44:38,363 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3851 transitions. [2022-11-16 11:44:38,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3851 transitions. [2022-11-16 11:44:38,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:38,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3851 transitions. [2022-11-16 11:44:38,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 350.09090909090907) internal successors, (3851), 11 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:38,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:38,374 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:38,374 INFO L175 Difference]: Start difference. First operand has 472 places, 428 transitions, 1664 flow. Second operand 11 states and 3851 transitions. [2022-11-16 11:44:38,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 457 transitions, 1944 flow [2022-11-16 11:44:38,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 457 transitions, 1898 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-16 11:44:38,423 INFO L231 Difference]: Finished difference. Result has 471 places, 0 transitions, 0 flow [2022-11-16 11:44:38,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=471, PETRI_TRANSITIONS=0} [2022-11-16 11:44:38,424 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 97 predicate places. [2022-11-16 11:44:38,424 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 0 transitions, 0 flow [2022-11-16 11:44:38,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.875) internal successors, (2775), 8 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:38,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 75 remaining) [2022-11-16 11:44:38,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 75 remaining) [2022-11-16 11:44:38,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 75 remaining) [2022-11-16 11:44:38,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 75 remaining) [2022-11-16 11:44:38,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 75 remaining) [2022-11-16 11:44:38,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 75 remaining) [2022-11-16 11:44:38,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 75 remaining) [2022-11-16 11:44:38,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 75 remaining) [2022-11-16 11:44:38,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 75 remaining) [2022-11-16 11:44:38,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 75 remaining) [2022-11-16 11:44:38,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 75 remaining) [2022-11-16 11:44:38,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 75 remaining) [2022-11-16 11:44:38,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 75 remaining) [2022-11-16 11:44:38,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 75 remaining) [2022-11-16 11:44:38,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 75 remaining) [2022-11-16 11:44:38,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 75 remaining) [2022-11-16 11:44:38,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 75 remaining) [2022-11-16 11:44:38,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 75 remaining) [2022-11-16 11:44:38,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 75 remaining) [2022-11-16 11:44:38,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 75 remaining) [2022-11-16 11:44:38,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 75 remaining) [2022-11-16 11:44:38,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 75 remaining) [2022-11-16 11:44:38,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 75 remaining) [2022-11-16 11:44:38,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 75 remaining) [2022-11-16 11:44:38,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 75 remaining) [2022-11-16 11:44:38,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 75 remaining) [2022-11-16 11:44:38,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 75 remaining) [2022-11-16 11:44:38,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 75 remaining) [2022-11-16 11:44:38,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 75 remaining) [2022-11-16 11:44:38,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 75 remaining) [2022-11-16 11:44:38,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 75 remaining) [2022-11-16 11:44:38,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 75 remaining) [2022-11-16 11:44:38,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 75 remaining) [2022-11-16 11:44:38,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 75 remaining) [2022-11-16 11:44:38,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 75 remaining) [2022-11-16 11:44:38,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 75 remaining) [2022-11-16 11:44:38,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 75 remaining) [2022-11-16 11:44:38,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 75 remaining) [2022-11-16 11:44:38,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 75 remaining) [2022-11-16 11:44:38,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 75 remaining) [2022-11-16 11:44:38,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 75 remaining) [2022-11-16 11:44:38,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 75 remaining) [2022-11-16 11:44:38,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 75 remaining) [2022-11-16 11:44:38,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 75 remaining) [2022-11-16 11:44:38,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 75 remaining) [2022-11-16 11:44:38,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 75 remaining) [2022-11-16 11:44:38,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 75 remaining) [2022-11-16 11:44:38,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 75 remaining) [2022-11-16 11:44:38,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 75 remaining) [2022-11-16 11:44:38,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 75 remaining) [2022-11-16 11:44:38,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 75 remaining) [2022-11-16 11:44:38,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 75 remaining) [2022-11-16 11:44:38,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 75 remaining) [2022-11-16 11:44:38,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 75 remaining) [2022-11-16 11:44:38,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 75 remaining) [2022-11-16 11:44:38,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 75 remaining) [2022-11-16 11:44:38,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 75 remaining) [2022-11-16 11:44:38,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 75 remaining) [2022-11-16 11:44:38,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 75 remaining) [2022-11-16 11:44:38,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 75 remaining) [2022-11-16 11:44:38,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 75 remaining) [2022-11-16 11:44:38,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 75 remaining) [2022-11-16 11:44:38,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 75 remaining) [2022-11-16 11:44:38,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 75 remaining) [2022-11-16 11:44:38,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 75 remaining) [2022-11-16 11:44:38,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 75 remaining) [2022-11-16 11:44:38,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 75 remaining) [2022-11-16 11:44:38,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 75 remaining) [2022-11-16 11:44:38,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 75 remaining) [2022-11-16 11:44:38,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 75 remaining) [2022-11-16 11:44:38,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 75 remaining) [2022-11-16 11:44:38,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 75 remaining) [2022-11-16 11:44:38,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 75 remaining) [2022-11-16 11:44:38,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 75 remaining) [2022-11-16 11:44:38,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 75 remaining) [2022-11-16 11:44:38,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 11:44:38,441 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:38,446 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:44:38,447 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:44:38,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:44:38 BasicIcfg [2022-11-16 11:44:38,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:44:38,453 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:44:38,453 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:44:38,453 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:44:38,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:43:28" (3/4) ... [2022-11-16 11:44:38,456 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:44:38,462 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 11:44:38,462 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 11:44:38,462 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 11:44:38,467 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-16 11:44:38,467 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 11:44:38,467 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:44:38,468 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:44:38,512 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:44:38,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:44:38,517 INFO L158 Benchmark]: Toolchain (without parser) took 71750.32ms. Allocated memory was 132.1MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 94.5MB in the beginning and 1.0GB in the end (delta: -908.3MB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2022-11-16 11:44:38,517 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 132.1MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:44:38,518 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.37ms. Allocated memory is still 132.1MB. Free memory was 94.4MB in the beginning and 106.1MB in the end (delta: -11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:44:38,519 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.25ms. Allocated memory is still 132.1MB. Free memory was 106.1MB in the beginning and 103.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:44:38,520 INFO L158 Benchmark]: Boogie Preprocessor took 64.88ms. Allocated memory is still 132.1MB. Free memory was 103.5MB in the beginning and 101.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:44:38,521 INFO L158 Benchmark]: RCFGBuilder took 1005.24ms. Allocated memory is still 132.1MB. Free memory was 101.8MB in the beginning and 73.6MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-16 11:44:38,521 INFO L158 Benchmark]: TraceAbstraction took 70223.22ms. Allocated memory was 132.1MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 73.1MB in the beginning and 1.0GB in the end (delta: -932.9MB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2022-11-16 11:44:38,521 INFO L158 Benchmark]: Witness Printer took 59.89ms. Allocated memory is still 2.6GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:44:38,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 132.1MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.37ms. Allocated memory is still 132.1MB. Free memory was 94.4MB in the beginning and 106.1MB in the end (delta: -11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.25ms. Allocated memory is still 132.1MB. Free memory was 106.1MB in the beginning and 103.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.88ms. Allocated memory is still 132.1MB. Free memory was 103.5MB in the beginning and 101.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1005.24ms. Allocated memory is still 132.1MB. Free memory was 101.8MB in the beginning and 73.6MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 70223.22ms. Allocated memory was 132.1MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 73.1MB in the beginning and 1.0GB in the end (delta: -932.9MB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 59.89ms. Allocated memory is still 2.6GB. Free memory was 1.0GB in the beginning and 1.0GB 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: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: 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, 686 locations, 75 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: 70.0s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 64.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3522 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3522 mSDsluCounter, 2744 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1592 mSDsCounter, 276 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5198 IncrementalHoareTripleChecker+Invalid, 5474 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 276 mSolverCounterUnsat, 1152 mSDtfsCounter, 5198 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 354 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1744occurred in iteration=32, InterpolantAutomatonStates: 291, 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, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 3672 NumberOfCodeBlocks, 3672 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 3633 ConstructedInterpolants, 0 QuantifiedInterpolants, 8793 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 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 36 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:44:38,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8cc8c5-c6fa-4031-b801-26cdf368d8f6/bin/uautomizer-tPACEb0tL8/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