./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:54:44,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:54:44,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:54:44,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:54:44,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:54:44,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:54:44,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:54:44,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:54:44,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:54:44,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:54:44,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:54:44,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:54:44,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:54:44,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:54:44,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:54:44,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:54:44,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:54:44,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:54:44,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:54:44,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:54:44,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:54:44,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:54:44,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:54:44,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:54:44,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:54:44,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:54:44,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:54:44,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:54:44,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:54:44,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:54:44,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:54:44,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:54:44,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:54:44,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:54:44,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:54:44,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:54:44,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:54:44,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:54:44,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:54:44,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:54:44,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:54:44,286 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:54:44,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:54:44,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:54:44,311 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:54:44,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:54:44,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:54:44,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:54:44,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:54:44,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:54:44,314 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:54:44,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:54:44,314 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:54:44,315 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:54:44,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:54:44,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:54:44,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:54:44,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:54:44,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:54:44,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:54:44,316 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:54:44,316 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:54:44,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:54:44,317 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:54:44,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:54:44,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:54:44,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:54:44,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:54:44,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:54:44,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:54:44,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:54:44,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:54:44,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:54:44,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:54:44,320 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:54:44,320 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:54:44,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:54:44,320 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_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2022-11-20 10:54:44,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:54:44,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:54:44,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:54:44,630 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:54:44,630 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:54:44,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-11-20 10:54:48,013 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:54:48,331 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:54:48,332 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-11-20 10:54:48,339 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/data/7572c99f5/4223435f66e84b739a35b52ac05f52f4/FLAGa3c01820e [2022-11-20 10:54:48,363 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/data/7572c99f5/4223435f66e84b739a35b52ac05f52f4 [2022-11-20 10:54:48,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:54:48,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:54:48,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:54:48,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:54:48,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:54:48,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba7170a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48, skipping insertion in model container [2022-11-20 10:54:48,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:54:48,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:54:48,592 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-11-20 10:54:48,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:54:48,610 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:54:48,636 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-11-20 10:54:48,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:54:48,656 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:54:48,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48 WrapperNode [2022-11-20 10:54:48,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:54:48,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:54:48,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:54:48,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:54:48,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,704 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 209 [2022-11-20 10:54:48,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:54:48,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:54:48,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:54:48,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:54:48,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,748 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:54:48,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:54:48,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:54:48,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:54:48,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48" (1/1) ... [2022-11-20 10:54:48,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:54:48,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:48,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:54:48,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:54:48,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:54:48,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:54:48,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:54:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:54:48,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:54:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:54:48,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:54:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:54:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:54:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:54:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:54:48,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:54:48,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:54:48,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:54:48,857 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:54:48,982 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:54:48,984 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:54:49,562 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:54:49,575 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:54:49,575 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:54:49,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:49 BoogieIcfgContainer [2022-11-20 10:54:49,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:54:49,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:54:49,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:54:49,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:54:49,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:54:48" (1/3) ... [2022-11-20 10:54:49,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f0ecfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:54:49, skipping insertion in model container [2022-11-20 10:54:49,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:48" (2/3) ... [2022-11-20 10:54:49,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f0ecfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:54:49, skipping insertion in model container [2022-11-20 10:54:49,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:49" (3/3) ... [2022-11-20 10:54:49,590 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-11-20 10:54:49,601 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:54:49,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:54:49,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 10:54:49,614 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:54:49,794 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:54:49,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 285 transitions, 594 flow [2022-11-20 10:54:50,101 INFO L130 PetriNetUnfolder]: 20/282 cut-off events. [2022-11-20 10:54:50,102 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:54:50,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 282 events. 20/282 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 728 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 205. Up to 2 conditions per place. [2022-11-20 10:54:50,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 285 transitions, 594 flow [2022-11-20 10:54:50,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 253 transitions, 521 flow [2022-11-20 10:54:50,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:54:50,148 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;@c1c29e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:54:50,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-20 10:54:50,171 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-20 10:54:50,171 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:54:50,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:50,172 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:50,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:50,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:50,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1001472441, now seen corresponding path program 1 times [2022-11-20 10:54:50,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:50,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940809965] [2022-11-20 10:54:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:50,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:50,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:50,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940809965] [2022-11-20 10:54:50,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940809965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:50,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:50,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:50,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018190514] [2022-11-20 10:54:50,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:50,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:50,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:50,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:50,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:50,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 285 [2022-11-20 10:54:50,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 253 transitions, 521 flow. Second operand has 6 states, 6 states have (on average 245.83333333333334) internal successors, (1475), 6 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:50,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:50,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 285 [2022-11-20 10:54:50,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:51,224 INFO L130 PetriNetUnfolder]: 72/482 cut-off events. [2022-11-20 10:54:51,224 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-11-20 10:54:51,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 482 events. 72/482 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2481 event pairs, 2 based on Foata normal form. 115/535 useless extension candidates. Maximal degree in co-relation 610. Up to 119 conditions per place. [2022-11-20 10:54:51,241 INFO L137 encePairwiseOnDemand]: 273/285 looper letters, 33 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-20 10:54:51,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 254 transitions, 617 flow [2022-11-20 10:54:51,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:54:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1517 transitions. [2022-11-20 10:54:51,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8871345029239766 [2022-11-20 10:54:51,275 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1517 transitions. [2022-11-20 10:54:51,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1517 transitions. [2022-11-20 10:54:51,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:51,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1517 transitions. [2022-11-20 10:54:51,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:51,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:51,312 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:51,314 INFO L175 Difference]: Start difference. First operand has 245 places, 253 transitions, 521 flow. Second operand 6 states and 1517 transitions. [2022-11-20 10:54:51,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 254 transitions, 617 flow [2022-11-20 10:54:51,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 254 transitions, 598 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:54:51,331 INFO L231 Difference]: Finished difference. Result has 244 places, 246 transitions, 508 flow [2022-11-20 10:54:51,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=508, PETRI_PLACES=244, PETRI_TRANSITIONS=246} [2022-11-20 10:54:51,341 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, -1 predicate places. [2022-11-20 10:54:51,342 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 246 transitions, 508 flow [2022-11-20 10:54:51,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 245.83333333333334) internal successors, (1475), 6 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:51,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:51,344 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:51,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:54:51,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:51,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:51,346 INFO L85 PathProgramCache]: Analyzing trace with hash 980875305, now seen corresponding path program 1 times [2022-11-20 10:54:51,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:51,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015799218] [2022-11-20 10:54:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:51,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:51,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:51,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015799218] [2022-11-20 10:54:51,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015799218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:51,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:51,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:51,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951527264] [2022-11-20 10:54:51,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:51,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:51,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:51,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:51,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:51,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-20 10:54:51,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 246 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:51,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:51,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-20 10:54:51,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:51,857 INFO L130 PetriNetUnfolder]: 87/780 cut-off events. [2022-11-20 10:54:51,858 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-20 10:54:51,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 780 events. 87/780 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5123 event pairs, 24 based on Foata normal form. 0/663 useless extension candidates. Maximal degree in co-relation 668. Up to 71 conditions per place. [2022-11-20 10:54:51,873 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 37 selfloop transitions, 4 changer transitions 0/260 dead transitions. [2022-11-20 10:54:51,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 260 transitions, 626 flow [2022-11-20 10:54:51,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:54:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1031 transitions. [2022-11-20 10:54:51,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9043859649122807 [2022-11-20 10:54:51,878 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1031 transitions. [2022-11-20 10:54:51,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1031 transitions. [2022-11-20 10:54:51,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:51,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1031 transitions. [2022-11-20 10:54:51,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:51,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:51,889 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:51,889 INFO L175 Difference]: Start difference. First operand has 244 places, 246 transitions, 508 flow. Second operand 4 states and 1031 transitions. [2022-11-20 10:54:51,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 260 transitions, 626 flow [2022-11-20 10:54:51,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 260 transitions, 617 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:54:51,902 INFO L231 Difference]: Finished difference. Result has 245 places, 247 transitions, 523 flow [2022-11-20 10:54:51,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=523, PETRI_PLACES=245, PETRI_TRANSITIONS=247} [2022-11-20 10:54:51,904 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 0 predicate places. [2022-11-20 10:54:51,904 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 247 transitions, 523 flow [2022-11-20 10:54:51,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:51,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:51,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:51,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:54:51,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:51,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:51,911 INFO L85 PathProgramCache]: Analyzing trace with hash 518337590, now seen corresponding path program 1 times [2022-11-20 10:54:51,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:51,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087457052] [2022-11-20 10:54:51,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:51,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:52,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:52,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087457052] [2022-11-20 10:54:52,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087457052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:52,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:52,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:52,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325501873] [2022-11-20 10:54:52,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:52,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:52,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:52,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:52,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:52,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 285 [2022-11-20 10:54:52,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 247 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:52,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:52,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 285 [2022-11-20 10:54:52,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:52,668 INFO L130 PetriNetUnfolder]: 246/1486 cut-off events. [2022-11-20 10:54:52,668 INFO L131 PetriNetUnfolder]: For 123/355 co-relation queries the response was YES. [2022-11-20 10:54:52,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 1486 events. 246/1486 cut-off events. For 123/355 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11416 event pairs, 20 based on Foata normal form. 0/1206 useless extension candidates. Maximal degree in co-relation 1579. Up to 327 conditions per place. [2022-11-20 10:54:52,696 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 32 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-20 10:54:52,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 253 transitions, 616 flow [2022-11-20 10:54:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:54:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1502 transitions. [2022-11-20 10:54:52,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783625730994152 [2022-11-20 10:54:52,702 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1502 transitions. [2022-11-20 10:54:52,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1502 transitions. [2022-11-20 10:54:52,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:52,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1502 transitions. [2022-11-20 10:54:52,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:52,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:52,715 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:52,715 INFO L175 Difference]: Start difference. First operand has 245 places, 247 transitions, 523 flow. Second operand 6 states and 1502 transitions. [2022-11-20 10:54:52,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 253 transitions, 616 flow [2022-11-20 10:54:52,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 253 transitions, 616 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:54:52,721 INFO L231 Difference]: Finished difference. Result has 249 places, 246 transitions, 531 flow [2022-11-20 10:54:52,722 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=531, PETRI_PLACES=249, PETRI_TRANSITIONS=246} [2022-11-20 10:54:52,722 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 4 predicate places. [2022-11-20 10:54:52,723 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 246 transitions, 531 flow [2022-11-20 10:54:52,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:52,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:52,725 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:52,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:54:52,725 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:52,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:52,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1111403126, now seen corresponding path program 1 times [2022-11-20 10:54:52,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:52,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102292780] [2022-11-20 10:54:52,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:52,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:52,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:52,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102292780] [2022-11-20 10:54:52,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102292780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:52,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:52,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:52,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876937818] [2022-11-20 10:54:52,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:52,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:52,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:52,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:52,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:52,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-20 10:54:52,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 246 transitions, 531 flow. Second operand has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:52,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:52,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-20 10:54:52,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:53,238 INFO L130 PetriNetUnfolder]: 138/945 cut-off events. [2022-11-20 10:54:53,239 INFO L131 PetriNetUnfolder]: For 104/378 co-relation queries the response was YES. [2022-11-20 10:54:53,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 945 events. 138/945 cut-off events. For 104/378 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7016 event pairs, 48 based on Foata normal form. 0/776 useless extension candidates. Maximal degree in co-relation 1060. Up to 126 conditions per place. [2022-11-20 10:54:53,266 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 36 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2022-11-20 10:54:53,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 259 transitions, 644 flow [2022-11-20 10:54:53,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:53,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:54:53,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1030 transitions. [2022-11-20 10:54:53,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9035087719298246 [2022-11-20 10:54:53,271 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1030 transitions. [2022-11-20 10:54:53,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1030 transitions. [2022-11-20 10:54:53,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:53,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1030 transitions. [2022-11-20 10:54:53,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.5) internal successors, (1030), 4 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:53,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:53,286 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:53,287 INFO L175 Difference]: Start difference. First operand has 249 places, 246 transitions, 531 flow. Second operand 4 states and 1030 transitions. [2022-11-20 10:54:53,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 259 transitions, 644 flow [2022-11-20 10:54:53,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 259 transitions, 635 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:54:53,295 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 546 flow [2022-11-20 10:54:53,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2022-11-20 10:54:53,302 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 5 predicate places. [2022-11-20 10:54:53,303 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 546 flow [2022-11-20 10:54:53,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:53,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:53,305 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:53,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:54:53,306 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:53,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:53,307 INFO L85 PathProgramCache]: Analyzing trace with hash 323604880, now seen corresponding path program 1 times [2022-11-20 10:54:53,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:53,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247709903] [2022-11-20 10:54:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:53,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:53,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:53,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247709903] [2022-11-20 10:54:53,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247709903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:53,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:53,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:53,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107316203] [2022-11-20 10:54:53,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:53,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:53,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:53,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:53,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:53,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-20 10:54:53,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 546 flow. Second operand has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:53,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:53,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-20 10:54:53,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:53,783 INFO L130 PetriNetUnfolder]: 81/918 cut-off events. [2022-11-20 10:54:53,783 INFO L131 PetriNetUnfolder]: For 55/59 co-relation queries the response was YES. [2022-11-20 10:54:53,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 918 events. 81/918 cut-off events. For 55/59 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6417 event pairs, 24 based on Foata normal form. 3/803 useless extension candidates. Maximal degree in co-relation 1062. Up to 72 conditions per place. [2022-11-20 10:54:53,803 INFO L137 encePairwiseOnDemand]: 281/285 looper letters, 37 selfloop transitions, 3 changer transitions 0/259 dead transitions. [2022-11-20 10:54:53,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 259 transitions, 654 flow [2022-11-20 10:54:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:54:53,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1029 transitions. [2022-11-20 10:54:53,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9026315789473685 [2022-11-20 10:54:53,807 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1029 transitions. [2022-11-20 10:54:53,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1029 transitions. [2022-11-20 10:54:53,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:53,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1029 transitions. [2022-11-20 10:54:53,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:53,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:53,815 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:53,815 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 546 flow. Second operand 4 states and 1029 transitions. [2022-11-20 10:54:53,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 259 transitions, 654 flow [2022-11-20 10:54:53,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 259 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:54:53,822 INFO L231 Difference]: Finished difference. Result has 252 places, 246 transitions, 544 flow [2022-11-20 10:54:53,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=544, PETRI_PLACES=252, PETRI_TRANSITIONS=246} [2022-11-20 10:54:53,823 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 7 predicate places. [2022-11-20 10:54:53,824 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 246 transitions, 544 flow [2022-11-20 10:54:53,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:53,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:53,825 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] [2022-11-20 10:54:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:54:53,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1441817411, now seen corresponding path program 1 times [2022-11-20 10:54:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:53,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403911904] [2022-11-20 10:54:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:53,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:53,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:53,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403911904] [2022-11-20 10:54:53,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403911904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:53,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:53,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:53,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810586546] [2022-11-20 10:54:53,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:53,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:53,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:53,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:53,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:53,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 285 [2022-11-20 10:54:53,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 246 transitions, 544 flow. Second operand has 6 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:53,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:53,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 285 [2022-11-20 10:54:53,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:54,380 INFO L130 PetriNetUnfolder]: 104/1056 cut-off events. [2022-11-20 10:54:54,380 INFO L131 PetriNetUnfolder]: For 49/65 co-relation queries the response was YES. [2022-11-20 10:54:54,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 1056 events. 104/1056 cut-off events. For 49/65 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7645 event pairs, 7 based on Foata normal form. 0/926 useless extension candidates. Maximal degree in co-relation 1227. Up to 168 conditions per place. [2022-11-20 10:54:54,405 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 31 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-20 10:54:54,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 253 transitions, 638 flow [2022-11-20 10:54:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:54:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1501 transitions. [2022-11-20 10:54:54,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8777777777777778 [2022-11-20 10:54:54,410 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1501 transitions. [2022-11-20 10:54:54,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1501 transitions. [2022-11-20 10:54:54,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:54,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1501 transitions. [2022-11-20 10:54:54,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.16666666666666) internal successors, (1501), 6 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,422 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,422 INFO L175 Difference]: Start difference. First operand has 252 places, 246 transitions, 544 flow. Second operand 6 states and 1501 transitions. [2022-11-20 10:54:54,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 253 transitions, 638 flow [2022-11-20 10:54:54,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 253 transitions, 633 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:54:54,430 INFO L231 Difference]: Finished difference. Result has 254 places, 245 transitions, 547 flow [2022-11-20 10:54:54,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=254, PETRI_TRANSITIONS=245} [2022-11-20 10:54:54,432 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 9 predicate places. [2022-11-20 10:54:54,432 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 245 transitions, 547 flow [2022-11-20 10:54:54,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:54,434 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:54,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:54:54,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:54,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:54,435 INFO L85 PathProgramCache]: Analyzing trace with hash -812553210, now seen corresponding path program 1 times [2022-11-20 10:54:54,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:54,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821992008] [2022-11-20 10:54:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:54,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:54,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:54,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821992008] [2022-11-20 10:54:54,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821992008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:54,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:54,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:54,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807576581] [2022-11-20 10:54:54,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:54,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:54,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:54,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 285 [2022-11-20 10:54:54,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 245 transitions, 547 flow. Second operand has 5 states, 5 states have (on average 245.6) internal successors, (1228), 5 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:54,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 285 [2022-11-20 10:54:54,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:54,940 INFO L130 PetriNetUnfolder]: 95/947 cut-off events. [2022-11-20 10:54:54,940 INFO L131 PetriNetUnfolder]: For 38/42 co-relation queries the response was YES. [2022-11-20 10:54:54,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 947 events. 95/947 cut-off events. For 38/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6769 event pairs, 30 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 1151. Up to 90 conditions per place. [2022-11-20 10:54:54,961 INFO L137 encePairwiseOnDemand]: 278/285 looper letters, 44 selfloop transitions, 7 changer transitions 0/266 dead transitions. [2022-11-20 10:54:54,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 266 transitions, 703 flow [2022-11-20 10:54:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:54:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1510 transitions. [2022-11-20 10:54:54,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8830409356725146 [2022-11-20 10:54:54,966 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1510 transitions. [2022-11-20 10:54:54,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1510 transitions. [2022-11-20 10:54:54,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:54,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1510 transitions. [2022-11-20 10:54:54,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.66666666666666) internal successors, (1510), 6 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,978 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,978 INFO L175 Difference]: Start difference. First operand has 254 places, 245 transitions, 547 flow. Second operand 6 states and 1510 transitions. [2022-11-20 10:54:54,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 266 transitions, 703 flow [2022-11-20 10:54:54,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 266 transitions, 689 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 10:54:54,986 INFO L231 Difference]: Finished difference. Result has 255 places, 248 transitions, 568 flow [2022-11-20 10:54:54,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=255, PETRI_TRANSITIONS=248} [2022-11-20 10:54:54,987 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 10 predicate places. [2022-11-20 10:54:54,987 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 248 transitions, 568 flow [2022-11-20 10:54:54,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.6) internal successors, (1228), 5 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:54,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:54,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:54:54,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:54,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:54,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2069331958, now seen corresponding path program 1 times [2022-11-20 10:54:54,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:54,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669223656] [2022-11-20 10:54:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:54,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:55,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:55,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669223656] [2022-11-20 10:54:55,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669223656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:55,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:55,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:55,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865338545] [2022-11-20 10:54:55,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:55,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:55,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:55,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:55,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:55,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 285 [2022-11-20 10:54:55,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 248 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:55,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:55,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 285 [2022-11-20 10:54:55,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:55,712 INFO L130 PetriNetUnfolder]: 375/1876 cut-off events. [2022-11-20 10:54:55,712 INFO L131 PetriNetUnfolder]: For 292/298 co-relation queries the response was YES. [2022-11-20 10:54:55,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 1876 events. 375/1876 cut-off events. For 292/298 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15481 event pairs, 4 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 2466. Up to 574 conditions per place. [2022-11-20 10:54:55,740 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 31 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-20 10:54:55,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 253 transitions, 654 flow [2022-11-20 10:54:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:54:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1501 transitions. [2022-11-20 10:54:55,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8777777777777778 [2022-11-20 10:54:55,745 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1501 transitions. [2022-11-20 10:54:55,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1501 transitions. [2022-11-20 10:54:55,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:55,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1501 transitions. [2022-11-20 10:54:55,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.16666666666666) internal successors, (1501), 6 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:55,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:55,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:55,757 INFO L175 Difference]: Start difference. First operand has 255 places, 248 transitions, 568 flow. Second operand 6 states and 1501 transitions. [2022-11-20 10:54:55,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 253 transitions, 654 flow [2022-11-20 10:54:55,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 253 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:54:55,766 INFO L231 Difference]: Finished difference. Result has 258 places, 247 transitions, 573 flow [2022-11-20 10:54:55,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=573, PETRI_PLACES=258, PETRI_TRANSITIONS=247} [2022-11-20 10:54:55,771 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 13 predicate places. [2022-11-20 10:54:55,771 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 247 transitions, 573 flow [2022-11-20 10:54:55,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:55,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:55,773 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:55,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:54:55,773 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:55,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:55,774 INFO L85 PathProgramCache]: Analyzing trace with hash -275217912, now seen corresponding path program 1 times [2022-11-20 10:54:55,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:55,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465314945] [2022-11-20 10:54:55,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:55,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:55,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:55,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465314945] [2022-11-20 10:54:55,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465314945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:55,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:55,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:55,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763208253] [2022-11-20 10:54:55,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:55,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:55,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:55,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:55,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:55,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-20 10:54:55,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 247 transitions, 573 flow. Second operand has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:55,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:55,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-20 10:54:55,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:56,403 INFO L130 PetriNetUnfolder]: 368/1772 cut-off events. [2022-11-20 10:54:56,403 INFO L131 PetriNetUnfolder]: For 369/629 co-relation queries the response was YES. [2022-11-20 10:54:56,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 1772 events. 368/1772 cut-off events. For 369/629 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16893 event pairs, 144 based on Foata normal form. 0/1356 useless extension candidates. Maximal degree in co-relation 2500. Up to 338 conditions per place. [2022-11-20 10:54:56,431 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 35 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2022-11-20 10:54:56,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 259 transitions, 679 flow [2022-11-20 10:54:56,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:54:56,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1029 transitions. [2022-11-20 10:54:56,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9026315789473685 [2022-11-20 10:54:56,436 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1029 transitions. [2022-11-20 10:54:56,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1029 transitions. [2022-11-20 10:54:56,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:56,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1029 transitions. [2022-11-20 10:54:56,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:56,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:56,455 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:56,464 INFO L175 Difference]: Start difference. First operand has 258 places, 247 transitions, 573 flow. Second operand 4 states and 1029 transitions. [2022-11-20 10:54:56,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 259 transitions, 679 flow [2022-11-20 10:54:56,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 259 transitions, 670 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:54:56,471 INFO L231 Difference]: Finished difference. Result has 259 places, 248 transitions, 588 flow [2022-11-20 10:54:56,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=259, PETRI_TRANSITIONS=248} [2022-11-20 10:54:56,473 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 14 predicate places. [2022-11-20 10:54:56,474 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 248 transitions, 588 flow [2022-11-20 10:54:56,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:56,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:56,476 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:56,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:54:56,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:56,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash 477347057, now seen corresponding path program 1 times [2022-11-20 10:54:56,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:56,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159709448] [2022-11-20 10:54:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:56,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:56,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:56,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159709448] [2022-11-20 10:54:56,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159709448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:56,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:56,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:56,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133487202] [2022-11-20 10:54:56,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:56,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:56,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:56,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:56,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:56,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-20 10:54:56,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 248 transitions, 588 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:56,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:56,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-20 10:54:56,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:57,087 INFO L130 PetriNetUnfolder]: 129/1067 cut-off events. [2022-11-20 10:54:57,087 INFO L131 PetriNetUnfolder]: For 168/442 co-relation queries the response was YES. [2022-11-20 10:54:57,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 1067 events. 129/1067 cut-off events. For 168/442 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8311 event pairs, 48 based on Foata normal form. 5/912 useless extension candidates. Maximal degree in co-relation 1351. Up to 121 conditions per place. [2022-11-20 10:54:57,123 INFO L137 encePairwiseOnDemand]: 281/285 looper letters, 36 selfloop transitions, 3 changer transitions 0/259 dead transitions. [2022-11-20 10:54:57,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 259 transitions, 691 flow [2022-11-20 10:54:57,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:57,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:54:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1028 transitions. [2022-11-20 10:54:57,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9017543859649123 [2022-11-20 10:54:57,127 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1028 transitions. [2022-11-20 10:54:57,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1028 transitions. [2022-11-20 10:54:57,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:57,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1028 transitions. [2022-11-20 10:54:57,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:57,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:57,135 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:57,136 INFO L175 Difference]: Start difference. First operand has 259 places, 248 transitions, 588 flow. Second operand 4 states and 1028 transitions. [2022-11-20 10:54:57,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 259 transitions, 691 flow [2022-11-20 10:54:57,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 259 transitions, 689 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:54:57,143 INFO L231 Difference]: Finished difference. Result has 261 places, 247 transitions, 586 flow [2022-11-20 10:54:57,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=586, PETRI_PLACES=261, PETRI_TRANSITIONS=247} [2022-11-20 10:54:57,145 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 16 predicate places. [2022-11-20 10:54:57,146 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 247 transitions, 586 flow [2022-11-20 10:54:57,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:57,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:57,147 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] [2022-11-20 10:54:57,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:54:57,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:57,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:57,148 INFO L85 PathProgramCache]: Analyzing trace with hash 839494952, now seen corresponding path program 1 times [2022-11-20 10:54:57,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:57,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248234080] [2022-11-20 10:54:57,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:57,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:57,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:57,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248234080] [2022-11-20 10:54:57,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248234080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:57,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:57,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:54:57,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008787853] [2022-11-20 10:54:57,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:57,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:54:57,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:57,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:54:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:54:57,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 285 [2022-11-20 10:54:57,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 247 transitions, 586 flow. Second operand has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:57,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:57,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 285 [2022-11-20 10:54:57,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:57,781 INFO L130 PetriNetUnfolder]: 172/1104 cut-off events. [2022-11-20 10:54:57,782 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-11-20 10:54:57,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 1104 events. 172/1104 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8037 event pairs, 2 based on Foata normal form. 0/1011 useless extension candidates. Maximal degree in co-relation 1715. Up to 157 conditions per place. [2022-11-20 10:54:57,808 INFO L137 encePairwiseOnDemand]: 275/285 looper letters, 41 selfloop transitions, 11 changer transitions 0/263 dead transitions. [2022-11-20 10:54:57,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 263 transitions, 736 flow [2022-11-20 10:54:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:54:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:54:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1962 transitions. [2022-11-20 10:54:57,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8605263157894737 [2022-11-20 10:54:57,814 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1962 transitions. [2022-11-20 10:54:57,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1962 transitions. [2022-11-20 10:54:57,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:57,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1962 transitions. [2022-11-20 10:54:57,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.25) internal successors, (1962), 8 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:57,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:57,826 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:57,826 INFO L175 Difference]: Start difference. First operand has 261 places, 247 transitions, 586 flow. Second operand 8 states and 1962 transitions. [2022-11-20 10:54:57,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 263 transitions, 736 flow [2022-11-20 10:54:57,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 263 transitions, 731 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:54:57,833 INFO L231 Difference]: Finished difference. Result has 268 places, 248 transitions, 617 flow [2022-11-20 10:54:57,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=617, PETRI_PLACES=268, PETRI_TRANSITIONS=248} [2022-11-20 10:54:57,834 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 23 predicate places. [2022-11-20 10:54:57,834 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 248 transitions, 617 flow [2022-11-20 10:54:57,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:57,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:57,835 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] [2022-11-20 10:54:57,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:54:57,836 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:57,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1912857664, now seen corresponding path program 1 times [2022-11-20 10:54:57,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:57,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851198641] [2022-11-20 10:54:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:57,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:57,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:57,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851198641] [2022-11-20 10:54:57,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851198641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:57,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:57,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:57,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568518985] [2022-11-20 10:54:57,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:57,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:57,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:57,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:57,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:57,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 285 [2022-11-20 10:54:57,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 248 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 246.33333333333334) internal successors, (1478), 6 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:57,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:57,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 285 [2022-11-20 10:54:57,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:58,472 INFO L130 PetriNetUnfolder]: 277/1708 cut-off events. [2022-11-20 10:54:58,472 INFO L131 PetriNetUnfolder]: For 212/260 co-relation queries the response was YES. [2022-11-20 10:54:58,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 1708 events. 277/1708 cut-off events. For 212/260 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14003 event pairs, 6 based on Foata normal form. 0/1464 useless extension candidates. Maximal degree in co-relation 2179. Up to 427 conditions per place. [2022-11-20 10:54:58,509 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 30 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-20 10:54:58,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 254 transitions, 706 flow [2022-11-20 10:54:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:54:58,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1500 transitions. [2022-11-20 10:54:58,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8771929824561403 [2022-11-20 10:54:58,514 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1500 transitions. [2022-11-20 10:54:58,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1500 transitions. [2022-11-20 10:54:58,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:58,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1500 transitions. [2022-11-20 10:54:58,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:58,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:58,523 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:58,524 INFO L175 Difference]: Start difference. First operand has 268 places, 248 transitions, 617 flow. Second operand 6 states and 1500 transitions. [2022-11-20 10:54:58,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 254 transitions, 706 flow [2022-11-20 10:54:58,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 254 transitions, 697 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:54:58,530 INFO L231 Difference]: Finished difference. Result has 268 places, 247 transitions, 616 flow [2022-11-20 10:54:58,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=616, PETRI_PLACES=268, PETRI_TRANSITIONS=247} [2022-11-20 10:54:58,532 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 23 predicate places. [2022-11-20 10:54:58,532 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 247 transitions, 616 flow [2022-11-20 10:54:58,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.33333333333334) internal successors, (1478), 6 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:58,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:58,533 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] [2022-11-20 10:54:58,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:54:58,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:58,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:58,534 INFO L85 PathProgramCache]: Analyzing trace with hash 254540471, now seen corresponding path program 1 times [2022-11-20 10:54:58,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:58,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620304272] [2022-11-20 10:54:58,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:58,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:58,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:58,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620304272] [2022-11-20 10:54:58,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620304272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:58,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:58,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:54:58,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923132834] [2022-11-20 10:54:58,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:58,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:54:58,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:58,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:54:58,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:54:58,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 285 [2022-11-20 10:54:58,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 247 transitions, 616 flow. Second operand has 8 states, 8 states have (on average 241.125) internal successors, (1929), 8 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:58,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:58,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 285 [2022-11-20 10:54:58,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:59,312 INFO L130 PetriNetUnfolder]: 164/1654 cut-off events. [2022-11-20 10:54:59,313 INFO L131 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES. [2022-11-20 10:54:59,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2463 conditions, 1654 events. 164/1654 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13959 event pairs, 8 based on Foata normal form. 0/1497 useless extension candidates. Maximal degree in co-relation 2293. Up to 147 conditions per place. [2022-11-20 10:54:59,348 INFO L137 encePairwiseOnDemand]: 275/285 looper letters, 43 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2022-11-20 10:54:59,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 264 transitions, 778 flow [2022-11-20 10:54:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:54:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:54:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1964 transitions. [2022-11-20 10:54:59,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8614035087719298 [2022-11-20 10:54:59,355 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1964 transitions. [2022-11-20 10:54:59,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1964 transitions. [2022-11-20 10:54:59,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:59,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1964 transitions. [2022-11-20 10:54:59,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.5) internal successors, (1964), 8 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:59,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:59,368 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:59,368 INFO L175 Difference]: Start difference. First operand has 268 places, 247 transitions, 616 flow. Second operand 8 states and 1964 transitions. [2022-11-20 10:54:59,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 264 transitions, 778 flow [2022-11-20 10:54:59,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 264 transitions, 761 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:54:59,377 INFO L231 Difference]: Finished difference. Result has 273 places, 248 transitions, 637 flow [2022-11-20 10:54:59,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=273, PETRI_TRANSITIONS=248} [2022-11-20 10:54:59,379 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 28 predicate places. [2022-11-20 10:54:59,379 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 248 transitions, 637 flow [2022-11-20 10:54:59,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.125) internal successors, (1929), 8 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:59,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:59,380 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:59,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:54:59,381 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:54:59,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash 885565827, now seen corresponding path program 1 times [2022-11-20 10:54:59,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:59,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732147025] [2022-11-20 10:54:59,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:59,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:59,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:59,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732147025] [2022-11-20 10:54:59,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732147025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:59,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:59,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:59,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72073410] [2022-11-20 10:54:59,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:59,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:59,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:59,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:59,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:59,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 285 [2022-11-20 10:54:59,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 248 transitions, 637 flow. Second operand has 5 states, 5 states have (on average 245.8) internal successors, (1229), 5 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:59,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:59,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 285 [2022-11-20 10:54:59,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:59,954 INFO L130 PetriNetUnfolder]: 157/1119 cut-off events. [2022-11-20 10:54:59,954 INFO L131 PetriNetUnfolder]: For 172/514 co-relation queries the response was YES. [2022-11-20 10:54:59,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 1119 events. 157/1119 cut-off events. For 172/514 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9063 event pairs, 60 based on Foata normal form. 0/958 useless extension candidates. Maximal degree in co-relation 1506. Up to 153 conditions per place. [2022-11-20 10:54:59,991 INFO L137 encePairwiseOnDemand]: 278/285 looper letters, 43 selfloop transitions, 7 changer transitions 0/268 dead transitions. [2022-11-20 10:54:59,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 268 transitions, 788 flow [2022-11-20 10:54:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:54:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1509 transitions. [2022-11-20 10:54:59,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8824561403508772 [2022-11-20 10:54:59,996 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1509 transitions. [2022-11-20 10:54:59,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1509 transitions. [2022-11-20 10:54:59,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:59,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1509 transitions. [2022-11-20 10:55:00,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.5) internal successors, (1509), 6 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,005 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,005 INFO L175 Difference]: Start difference. First operand has 273 places, 248 transitions, 637 flow. Second operand 6 states and 1509 transitions. [2022-11-20 10:55:00,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 268 transitions, 788 flow [2022-11-20 10:55:00,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 268 transitions, 774 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 10:55:00,075 INFO L231 Difference]: Finished difference. Result has 274 places, 251 transitions, 658 flow [2022-11-20 10:55:00,075 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=658, PETRI_PLACES=274, PETRI_TRANSITIONS=251} [2022-11-20 10:55:00,076 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 29 predicate places. [2022-11-20 10:55:00,076 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 251 transitions, 658 flow [2022-11-20 10:55:00,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.8) internal successors, (1229), 5 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:00,077 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:00,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:55:00,077 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:00,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash -426772261, now seen corresponding path program 1 times [2022-11-20 10:55:00,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:00,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14556289] [2022-11-20 10:55:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:00,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:00,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:00,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14556289] [2022-11-20 10:55:00,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14556289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:00,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:00,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:00,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561144486] [2022-11-20 10:55:00,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:00,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:00,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:00,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:00,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:00,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 285 [2022-11-20 10:55:00,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 251 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:00,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 285 [2022-11-20 10:55:00,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:00,631 INFO L130 PetriNetUnfolder]: 114/894 cut-off events. [2022-11-20 10:55:00,631 INFO L131 PetriNetUnfolder]: For 132/136 co-relation queries the response was YES. [2022-11-20 10:55:00,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 894 events. 114/894 cut-off events. For 132/136 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6288 event pairs, 58 based on Foata normal form. 3/824 useless extension candidates. Maximal degree in co-relation 1413. Up to 153 conditions per place. [2022-11-20 10:55:00,656 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 49 selfloop transitions, 7 changer transitions 0/267 dead transitions. [2022-11-20 10:55:00,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 267 transitions, 817 flow [2022-11-20 10:55:00,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:00,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:55:00,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1712 transitions. [2022-11-20 10:55:00,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8581453634085213 [2022-11-20 10:55:00,661 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1712 transitions. [2022-11-20 10:55:00,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1712 transitions. [2022-11-20 10:55:00,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:00,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1712 transitions. [2022-11-20 10:55:00,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.57142857142858) internal successors, (1712), 7 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,673 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,673 INFO L175 Difference]: Start difference. First operand has 274 places, 251 transitions, 658 flow. Second operand 7 states and 1712 transitions. [2022-11-20 10:55:00,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 267 transitions, 817 flow [2022-11-20 10:55:00,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 267 transitions, 811 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:55:00,681 INFO L231 Difference]: Finished difference. Result has 281 places, 254 transitions, 688 flow [2022-11-20 10:55:00,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=688, PETRI_PLACES=281, PETRI_TRANSITIONS=254} [2022-11-20 10:55:00,683 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 36 predicate places. [2022-11-20 10:55:00,683 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 254 transitions, 688 flow [2022-11-20 10:55:00,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:00,685 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] [2022-11-20 10:55:00,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:55:00,685 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash 381992749, now seen corresponding path program 1 times [2022-11-20 10:55:00,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:00,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826756996] [2022-11-20 10:55:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:00,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:00,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:00,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826756996] [2022-11-20 10:55:00,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826756996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:00,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:00,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:00,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211208821] [2022-11-20 10:55:00,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:00,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:00,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:00,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:00,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:00,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 285 [2022-11-20 10:55:00,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 254 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:00,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 285 [2022-11-20 10:55:00,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:01,387 INFO L130 PetriNetUnfolder]: 108/885 cut-off events. [2022-11-20 10:55:01,387 INFO L131 PetriNetUnfolder]: For 146/150 co-relation queries the response was YES. [2022-11-20 10:55:01,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 885 events. 108/885 cut-off events. For 146/150 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6228 event pairs, 46 based on Foata normal form. 3/829 useless extension candidates. Maximal degree in co-relation 1456. Up to 126 conditions per place. [2022-11-20 10:55:01,411 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 55 selfloop transitions, 8 changer transitions 0/276 dead transitions. [2022-11-20 10:55:01,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 276 transitions, 890 flow [2022-11-20 10:55:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:55:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1718 transitions. [2022-11-20 10:55:01,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8611528822055138 [2022-11-20 10:55:01,416 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1718 transitions. [2022-11-20 10:55:01,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1718 transitions. [2022-11-20 10:55:01,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:01,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1718 transitions. [2022-11-20 10:55:01,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 245.42857142857142) internal successors, (1718), 7 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:01,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:01,428 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:01,429 INFO L175 Difference]: Start difference. First operand has 281 places, 254 transitions, 688 flow. Second operand 7 states and 1718 transitions. [2022-11-20 10:55:01,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 276 transitions, 890 flow [2022-11-20 10:55:01,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 276 transitions, 888 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:55:01,437 INFO L231 Difference]: Finished difference. Result has 289 places, 258 transitions, 735 flow [2022-11-20 10:55:01,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=735, PETRI_PLACES=289, PETRI_TRANSITIONS=258} [2022-11-20 10:55:01,438 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 44 predicate places. [2022-11-20 10:55:01,441 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 258 transitions, 735 flow [2022-11-20 10:55:01,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:01,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:01,442 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:01,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:55:01,442 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1448342929, now seen corresponding path program 1 times [2022-11-20 10:55:01,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:01,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959714922] [2022-11-20 10:55:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:01,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:01,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:01,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959714922] [2022-11-20 10:55:01,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959714922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:01,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:01,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:55:01,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417360172] [2022-11-20 10:55:01,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:01,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:55:01,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:01,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:55:01,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:55:01,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-20 10:55:01,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 258 transitions, 735 flow. Second operand has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:01,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:01,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-20 10:55:01,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:02,066 INFO L130 PetriNetUnfolder]: 354/1760 cut-off events. [2022-11-20 10:55:02,066 INFO L131 PetriNetUnfolder]: For 526/784 co-relation queries the response was YES. [2022-11-20 10:55:02,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2757 conditions, 1760 events. 354/1760 cut-off events. For 526/784 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 17016 event pairs, 144 based on Foata normal form. 13/1394 useless extension candidates. Maximal degree in co-relation 2669. Up to 316 conditions per place. [2022-11-20 10:55:02,091 INFO L137 encePairwiseOnDemand]: 281/285 looper letters, 35 selfloop transitions, 3 changer transitions 0/268 dead transitions. [2022-11-20 10:55:02,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 268 transitions, 831 flow [2022-11-20 10:55:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:55:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:55:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1027 transitions. [2022-11-20 10:55:02,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9008771929824562 [2022-11-20 10:55:02,095 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1027 transitions. [2022-11-20 10:55:02,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1027 transitions. [2022-11-20 10:55:02,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:02,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1027 transitions. [2022-11-20 10:55:02,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 256.75) internal successors, (1027), 4 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:02,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:02,101 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:02,102 INFO L175 Difference]: Start difference. First operand has 289 places, 258 transitions, 735 flow. Second operand 4 states and 1027 transitions. [2022-11-20 10:55:02,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 268 transitions, 831 flow [2022-11-20 10:55:02,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 268 transitions, 829 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:55:02,109 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 733 flow [2022-11-20 10:55:02,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=733, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2022-11-20 10:55:02,111 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 46 predicate places. [2022-11-20 10:55:02,111 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 733 flow [2022-11-20 10:55:02,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:02,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:02,112 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] [2022-11-20 10:55:02,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:55:02,112 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:02,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:02,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2040986715, now seen corresponding path program 1 times [2022-11-20 10:55:02,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:02,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101890289] [2022-11-20 10:55:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:02,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:02,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:02,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101890289] [2022-11-20 10:55:02,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101890289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:02,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:02,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:55:02,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345063975] [2022-11-20 10:55:02,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:02,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:55:02,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:02,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:55:02,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:55:02,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 285 [2022-11-20 10:55:02,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 733 flow. Second operand has 8 states, 8 states have (on average 241.125) internal successors, (1929), 8 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:02,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:02,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 285 [2022-11-20 10:55:02,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:02,993 INFO L130 PetriNetUnfolder]: 241/1764 cut-off events. [2022-11-20 10:55:02,994 INFO L131 PetriNetUnfolder]: For 311/496 co-relation queries the response was YES. [2022-11-20 10:55:03,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 1764 events. 241/1764 cut-off events. For 311/496 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15515 event pairs, 7 based on Foata normal form. 2/1588 useless extension candidates. Maximal degree in co-relation 2595. Up to 209 conditions per place. [2022-11-20 10:55:03,040 INFO L137 encePairwiseOnDemand]: 275/285 looper letters, 40 selfloop transitions, 11 changer transitions 0/272 dead transitions. [2022-11-20 10:55:03,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 272 transitions, 878 flow [2022-11-20 10:55:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:55:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:55:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1961 transitions. [2022-11-20 10:55:03,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8600877192982456 [2022-11-20 10:55:03,047 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1961 transitions. [2022-11-20 10:55:03,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1961 transitions. [2022-11-20 10:55:03,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:03,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1961 transitions. [2022-11-20 10:55:03,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.125) internal successors, (1961), 8 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:03,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:03,061 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:03,061 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 733 flow. Second operand 8 states and 1961 transitions. [2022-11-20 10:55:03,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 272 transitions, 878 flow [2022-11-20 10:55:03,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 272 transitions, 873 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:55:03,070 INFO L231 Difference]: Finished difference. Result has 298 places, 258 transitions, 764 flow [2022-11-20 10:55:03,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=298, PETRI_TRANSITIONS=258} [2022-11-20 10:55:03,071 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 53 predicate places. [2022-11-20 10:55:03,071 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 258 transitions, 764 flow [2022-11-20 10:55:03,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.125) internal successors, (1929), 8 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:03,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:03,072 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] [2022-11-20 10:55:03,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:55:03,073 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:03,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:03,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1948956992, now seen corresponding path program 1 times [2022-11-20 10:55:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:03,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553972446] [2022-11-20 10:55:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:03,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:03,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:03,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553972446] [2022-11-20 10:55:03,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553972446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:03,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:03,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:03,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98250583] [2022-11-20 10:55:03,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:03,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:03,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:03,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:03,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:03,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 285 [2022-11-20 10:55:03,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 258 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 246.5) internal successors, (1479), 6 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:03,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:03,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 285 [2022-11-20 10:55:03,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:03,931 INFO L130 PetriNetUnfolder]: 448/2549 cut-off events. [2022-11-20 10:55:03,931 INFO L131 PetriNetUnfolder]: For 594/600 co-relation queries the response was YES. [2022-11-20 10:55:03,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 2549 events. 448/2549 cut-off events. For 594/600 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 23232 event pairs, 4 based on Foata normal form. 0/2131 useless extension candidates. Maximal degree in co-relation 3719. Up to 737 conditions per place. [2022-11-20 10:55:03,973 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 29 selfloop transitions, 5 changer transitions 0/263 dead transitions. [2022-11-20 10:55:03,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 263 transitions, 850 flow [2022-11-20 10:55:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:55:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:55:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1499 transitions. [2022-11-20 10:55:03,976 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.876608187134503 [2022-11-20 10:55:03,977 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1499 transitions. [2022-11-20 10:55:03,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1499 transitions. [2022-11-20 10:55:03,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:03,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1499 transitions. [2022-11-20 10:55:03,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.83333333333334) internal successors, (1499), 6 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:03,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:03,985 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:03,985 INFO L175 Difference]: Start difference. First operand has 298 places, 258 transitions, 764 flow. Second operand 6 states and 1499 transitions. [2022-11-20 10:55:03,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 263 transitions, 850 flow [2022-11-20 10:55:03,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 263 transitions, 837 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:55:03,995 INFO L231 Difference]: Finished difference. Result has 298 places, 257 transitions, 763 flow [2022-11-20 10:55:03,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=763, PETRI_PLACES=298, PETRI_TRANSITIONS=257} [2022-11-20 10:55:03,996 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 53 predicate places. [2022-11-20 10:55:03,997 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 257 transitions, 763 flow [2022-11-20 10:55:03,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.5) internal successors, (1479), 6 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:03,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:03,998 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] [2022-11-20 10:55:03,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:55:03,998 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:03,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:03,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1153922072, now seen corresponding path program 1 times [2022-11-20 10:55:03,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:03,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882549614] [2022-11-20 10:55:03,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:03,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:04,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:04,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:04,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882549614] [2022-11-20 10:55:04,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882549614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:04,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:04,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:55:04,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976259614] [2022-11-20 10:55:04,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:04,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:55:04,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:04,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:55:04,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:55:04,162 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 285 [2022-11-20 10:55:04,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 257 transitions, 763 flow. Second operand has 8 states, 8 states have (on average 241.25) internal successors, (1930), 8 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:04,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:04,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 285 [2022-11-20 10:55:04,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:04,855 INFO L130 PetriNetUnfolder]: 205/1309 cut-off events. [2022-11-20 10:55:04,855 INFO L131 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2022-11-20 10:55:04,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 1309 events. 205/1309 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10163 event pairs, 2 based on Foata normal form. 0/1203 useless extension candidates. Maximal degree in co-relation 2316. Up to 195 conditions per place. [2022-11-20 10:55:04,896 INFO L137 encePairwiseOnDemand]: 275/285 looper letters, 42 selfloop transitions, 9 changer transitions 0/273 dead transitions. [2022-11-20 10:55:04,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 273 transitions, 912 flow [2022-11-20 10:55:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:55:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:55:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1963 transitions. [2022-11-20 10:55:04,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8609649122807017 [2022-11-20 10:55:04,904 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1963 transitions. [2022-11-20 10:55:04,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1963 transitions. [2022-11-20 10:55:04,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:04,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1963 transitions. [2022-11-20 10:55:04,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.375) internal successors, (1963), 8 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:04,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:04,917 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:04,917 INFO L175 Difference]: Start difference. First operand has 298 places, 257 transitions, 763 flow. Second operand 8 states and 1963 transitions. [2022-11-20 10:55:04,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 273 transitions, 912 flow [2022-11-20 10:55:04,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 273 transitions, 903 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:55:04,929 INFO L231 Difference]: Finished difference. Result has 303 places, 258 transitions, 784 flow [2022-11-20 10:55:04,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=303, PETRI_TRANSITIONS=258} [2022-11-20 10:55:04,933 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 58 predicate places. [2022-11-20 10:55:04,933 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 258 transitions, 784 flow [2022-11-20 10:55:04,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.25) internal successors, (1930), 8 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:04,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:04,934 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:04,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:55:04,935 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash 533427139, now seen corresponding path program 1 times [2022-11-20 10:55:04,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:04,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149467231] [2022-11-20 10:55:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:05,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:05,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149467231] [2022-11-20 10:55:05,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149467231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:05,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:05,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:55:05,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40378639] [2022-11-20 10:55:05,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:05,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:55:05,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:05,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:55:05,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:55:05,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 285 [2022-11-20 10:55:05,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 258 transitions, 784 flow. Second operand has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:05,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:05,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 285 [2022-11-20 10:55:05,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:05,691 INFO L130 PetriNetUnfolder]: 437/2141 cut-off events. [2022-11-20 10:55:05,691 INFO L131 PetriNetUnfolder]: For 518/822 co-relation queries the response was YES. [2022-11-20 10:55:05,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3355 conditions, 2141 events. 437/2141 cut-off events. For 518/822 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21877 event pairs, 216 based on Foata normal form. 13/1689 useless extension candidates. Maximal degree in co-relation 3260. Up to 466 conditions per place. [2022-11-20 10:55:05,721 INFO L137 encePairwiseOnDemand]: 281/285 looper letters, 32 selfloop transitions, 3 changer transitions 0/268 dead transitions. [2022-11-20 10:55:05,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 268 transitions, 876 flow [2022-11-20 10:55:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:55:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:55:05,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1024 transitions. [2022-11-20 10:55:05,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8982456140350877 [2022-11-20 10:55:05,724 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1024 transitions. [2022-11-20 10:55:05,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1024 transitions. [2022-11-20 10:55:05,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:05,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1024 transitions. [2022-11-20 10:55:05,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:05,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:05,730 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:05,730 INFO L175 Difference]: Start difference. First operand has 303 places, 258 transitions, 784 flow. Second operand 4 states and 1024 transitions. [2022-11-20 10:55:05,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 268 transitions, 876 flow [2022-11-20 10:55:05,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 268 transitions, 865 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:55:05,738 INFO L231 Difference]: Finished difference. Result has 301 places, 258 transitions, 782 flow [2022-11-20 10:55:05,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=301, PETRI_TRANSITIONS=258} [2022-11-20 10:55:05,739 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 56 predicate places. [2022-11-20 10:55:05,739 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 258 transitions, 782 flow [2022-11-20 10:55:05,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:05,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:05,740 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] [2022-11-20 10:55:05,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 10:55:05,740 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:05,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:05,741 INFO L85 PathProgramCache]: Analyzing trace with hash 590521788, now seen corresponding path program 1 times [2022-11-20 10:55:05,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:05,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436879072] [2022-11-20 10:55:05,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:05,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:05,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:05,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436879072] [2022-11-20 10:55:05,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436879072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:05,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:05,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:05,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618942414] [2022-11-20 10:55:05,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:05,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:05,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:05,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:05,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:05,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 285 [2022-11-20 10:55:05,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 258 transitions, 782 flow. Second operand has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:05,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:05,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 285 [2022-11-20 10:55:05,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:06,424 INFO L130 PetriNetUnfolder]: 210/1103 cut-off events. [2022-11-20 10:55:06,424 INFO L131 PetriNetUnfolder]: For 369/668 co-relation queries the response was YES. [2022-11-20 10:55:06,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 1103 events. 210/1103 cut-off events. For 369/668 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9383 event pairs, 116 based on Foata normal form. 5/960 useless extension candidates. Maximal degree in co-relation 1870. Up to 271 conditions per place. [2022-11-20 10:55:06,468 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 48 selfloop transitions, 7 changer transitions 0/273 dead transitions. [2022-11-20 10:55:06,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 273 transitions, 936 flow [2022-11-20 10:55:06,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:06,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:55:06,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1711 transitions. [2022-11-20 10:55:06,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8576441102756892 [2022-11-20 10:55:06,472 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1711 transitions. [2022-11-20 10:55:06,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1711 transitions. [2022-11-20 10:55:06,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:06,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1711 transitions. [2022-11-20 10:55:06,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.42857142857142) internal successors, (1711), 7 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:06,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:06,480 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:06,480 INFO L175 Difference]: Start difference. First operand has 301 places, 258 transitions, 782 flow. Second operand 7 states and 1711 transitions. [2022-11-20 10:55:06,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 273 transitions, 936 flow [2022-11-20 10:55:06,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 273 transitions, 931 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:55:06,488 INFO L231 Difference]: Finished difference. Result has 308 places, 261 transitions, 813 flow [2022-11-20 10:55:06,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=813, PETRI_PLACES=308, PETRI_TRANSITIONS=261} [2022-11-20 10:55:06,490 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 63 predicate places. [2022-11-20 10:55:06,490 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 261 transitions, 813 flow [2022-11-20 10:55:06,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:06,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:06,491 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] [2022-11-20 10:55:06,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 10:55:06,491 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:06,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:06,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1853337258, now seen corresponding path program 1 times [2022-11-20 10:55:06,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:06,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078911576] [2022-11-20 10:55:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:06,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:06,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:06,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078911576] [2022-11-20 10:55:06,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078911576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:06,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:06,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:06,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579214018] [2022-11-20 10:55:06,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:06,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:06,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:06,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:06,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:06,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 285 [2022-11-20 10:55:06,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 261 transitions, 813 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:06,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:06,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 285 [2022-11-20 10:55:06,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:07,226 INFO L130 PetriNetUnfolder]: 198/1086 cut-off events. [2022-11-20 10:55:07,227 INFO L131 PetriNetUnfolder]: For 386/671 co-relation queries the response was YES. [2022-11-20 10:55:07,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 1086 events. 198/1086 cut-off events. For 386/671 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9173 event pairs, 92 based on Foata normal form. 5/974 useless extension candidates. Maximal degree in co-relation 1948. Up to 222 conditions per place. [2022-11-20 10:55:07,268 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 54 selfloop transitions, 8 changer transitions 0/282 dead transitions. [2022-11-20 10:55:07,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 282 transitions, 1010 flow [2022-11-20 10:55:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:07,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:55:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1717 transitions. [2022-11-20 10:55:07,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8606516290726817 [2022-11-20 10:55:07,273 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1717 transitions. [2022-11-20 10:55:07,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1717 transitions. [2022-11-20 10:55:07,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:07,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1717 transitions. [2022-11-20 10:55:07,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 245.28571428571428) internal successors, (1717), 7 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:07,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:07,281 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:07,281 INFO L175 Difference]: Start difference. First operand has 308 places, 261 transitions, 813 flow. Second operand 7 states and 1717 transitions. [2022-11-20 10:55:07,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 282 transitions, 1010 flow [2022-11-20 10:55:07,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 282 transitions, 1008 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:55:07,291 INFO L231 Difference]: Finished difference. Result has 316 places, 265 transitions, 860 flow [2022-11-20 10:55:07,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=860, PETRI_PLACES=316, PETRI_TRANSITIONS=265} [2022-11-20 10:55:07,292 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 71 predicate places. [2022-11-20 10:55:07,292 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 265 transitions, 860 flow [2022-11-20 10:55:07,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:07,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:07,293 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] [2022-11-20 10:55:07,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 10:55:07,294 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:07,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:07,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1116327269, now seen corresponding path program 1 times [2022-11-20 10:55:07,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:07,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845162260] [2022-11-20 10:55:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:07,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:07,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:07,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845162260] [2022-11-20 10:55:07,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845162260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:07,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:07,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:55:07,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396584812] [2022-11-20 10:55:07,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:07,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:55:07,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:07,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:55:07,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:55:07,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 285 [2022-11-20 10:55:07,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 265 transitions, 860 flow. Second operand has 8 states, 8 states have (on average 241.25) internal successors, (1930), 8 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:07,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:07,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 285 [2022-11-20 10:55:07,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:08,298 INFO L130 PetriNetUnfolder]: 477/2445 cut-off events. [2022-11-20 10:55:08,298 INFO L131 PetriNetUnfolder]: For 654/800 co-relation queries the response was YES. [2022-11-20 10:55:08,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4094 conditions, 2445 events. 477/2445 cut-off events. For 654/800 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 24437 event pairs, 2 based on Foata normal form. 0/2035 useless extension candidates. Maximal degree in co-relation 3626. Up to 486 conditions per place. [2022-11-20 10:55:08,346 INFO L137 encePairwiseOnDemand]: 275/285 looper letters, 38 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2022-11-20 10:55:08,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 279 transitions, 990 flow [2022-11-20 10:55:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:55:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:55:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1960 transitions. [2022-11-20 10:55:08,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8596491228070176 [2022-11-20 10:55:08,350 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1960 transitions. [2022-11-20 10:55:08,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1960 transitions. [2022-11-20 10:55:08,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:08,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1960 transitions. [2022-11-20 10:55:08,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:08,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:08,359 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:08,359 INFO L175 Difference]: Start difference. First operand has 316 places, 265 transitions, 860 flow. Second operand 8 states and 1960 transitions. [2022-11-20 10:55:08,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 279 transitions, 990 flow [2022-11-20 10:55:08,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 279 transitions, 990 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:55:08,369 INFO L231 Difference]: Finished difference. Result has 325 places, 266 transitions, 890 flow [2022-11-20 10:55:08,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=890, PETRI_PLACES=325, PETRI_TRANSITIONS=266} [2022-11-20 10:55:08,370 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 80 predicate places. [2022-11-20 10:55:08,371 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 266 transitions, 890 flow [2022-11-20 10:55:08,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.25) internal successors, (1930), 8 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:08,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:08,372 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] [2022-11-20 10:55:08,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 10:55:08,372 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:08,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:08,373 INFO L85 PathProgramCache]: Analyzing trace with hash 246407830, now seen corresponding path program 1 times [2022-11-20 10:55:08,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:08,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839454408] [2022-11-20 10:55:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:08,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:08,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:08,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839454408] [2022-11-20 10:55:08,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839454408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:08,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:08,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:55:08,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349628700] [2022-11-20 10:55:08,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:08,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:55:08,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:08,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:55:08,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:55:08,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 285 [2022-11-20 10:55:08,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 266 transitions, 890 flow. Second operand has 8 states, 8 states have (on average 241.375) internal successors, (1931), 8 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:08,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:08,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 285 [2022-11-20 10:55:08,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:09,366 INFO L130 PetriNetUnfolder]: 399/2339 cut-off events. [2022-11-20 10:55:09,366 INFO L131 PetriNetUnfolder]: For 710/833 co-relation queries the response was YES. [2022-11-20 10:55:09,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 2339 events. 399/2339 cut-off events. For 710/833 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22951 event pairs, 2 based on Foata normal form. 0/2019 useless extension candidates. Maximal degree in co-relation 3554. Up to 432 conditions per place. [2022-11-20 10:55:09,399 INFO L137 encePairwiseOnDemand]: 275/285 looper letters, 41 selfloop transitions, 9 changer transitions 0/282 dead transitions. [2022-11-20 10:55:09,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 282 transitions, 1037 flow [2022-11-20 10:55:09,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:55:09,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:55:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1962 transitions. [2022-11-20 10:55:09,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8605263157894737 [2022-11-20 10:55:09,404 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1962 transitions. [2022-11-20 10:55:09,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1962 transitions. [2022-11-20 10:55:09,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:09,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1962 transitions. [2022-11-20 10:55:09,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.25) internal successors, (1962), 8 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:09,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:09,413 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:09,413 INFO L175 Difference]: Start difference. First operand has 325 places, 266 transitions, 890 flow. Second operand 8 states and 1962 transitions. [2022-11-20 10:55:09,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 282 transitions, 1037 flow [2022-11-20 10:55:09,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 282 transitions, 1028 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:55:09,426 INFO L231 Difference]: Finished difference. Result has 330 places, 267 transitions, 911 flow [2022-11-20 10:55:09,426 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=330, PETRI_TRANSITIONS=267} [2022-11-20 10:55:09,427 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 85 predicate places. [2022-11-20 10:55:09,427 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 267 transitions, 911 flow [2022-11-20 10:55:09,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.375) internal successors, (1931), 8 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:09,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:09,428 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] [2022-11-20 10:55:09,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 10:55:09,429 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:09,429 INFO L85 PathProgramCache]: Analyzing trace with hash 347698298, now seen corresponding path program 1 times [2022-11-20 10:55:09,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:09,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448556242] [2022-11-20 10:55:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:09,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:09,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:09,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448556242] [2022-11-20 10:55:09,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448556242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:09,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:09,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:09,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640221470] [2022-11-20 10:55:09,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:09,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:09,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:09,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:09,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:09,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 285 [2022-11-20 10:55:09,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 267 transitions, 911 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:09,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:09,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 285 [2022-11-20 10:55:09,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:10,540 INFO L130 PetriNetUnfolder]: 653/2286 cut-off events. [2022-11-20 10:55:10,541 INFO L131 PetriNetUnfolder]: For 1028/1321 co-relation queries the response was YES. [2022-11-20 10:55:10,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4397 conditions, 2286 events. 653/2286 cut-off events. For 1028/1321 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 25634 event pairs, 348 based on Foata normal form. 18/1810 useless extension candidates. Maximal degree in co-relation 4291. Up to 741 conditions per place. [2022-11-20 10:55:10,581 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 40 selfloop transitions, 7 changer transitions 4/281 dead transitions. [2022-11-20 10:55:10,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 281 transitions, 1049 flow [2022-11-20 10:55:10,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:55:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1710 transitions. [2022-11-20 10:55:10,585 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-20 10:55:10,585 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1710 transitions. [2022-11-20 10:55:10,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1710 transitions. [2022-11-20 10:55:10,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:10,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1710 transitions. [2022-11-20 10:55:10,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.28571428571428) internal successors, (1710), 7 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:10,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:10,595 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:10,595 INFO L175 Difference]: Start difference. First operand has 330 places, 267 transitions, 911 flow. Second operand 7 states and 1710 transitions. [2022-11-20 10:55:10,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 281 transitions, 1049 flow [2022-11-20 10:55:10,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 281 transitions, 1038 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:55:10,607 INFO L231 Difference]: Finished difference. Result has 334 places, 270 transitions, 936 flow [2022-11-20 10:55:10,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=936, PETRI_PLACES=334, PETRI_TRANSITIONS=270} [2022-11-20 10:55:10,608 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 89 predicate places. [2022-11-20 10:55:10,609 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 270 transitions, 936 flow [2022-11-20 10:55:10,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:10,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:10,610 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] [2022-11-20 10:55:10,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 10:55:10,610 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 10:55:10,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:10,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1379223574, now seen corresponding path program 1 times [2022-11-20 10:55:10,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:10,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131220795] [2022-11-20 10:55:10,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:10,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:10,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:10,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131220795] [2022-11-20 10:55:10,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131220795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:10,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:10,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:10,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51899225] [2022-11-20 10:55:10,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:10,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:10,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:10,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:10,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:55:10,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 285 [2022-11-20 10:55:10,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 270 transitions, 936 flow. Second operand has 6 states, 6 states have (on average 240.83333333333334) internal successors, (1445), 6 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:10,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:10,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 285 [2022-11-20 10:55:10,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:11,858 INFO L130 PetriNetUnfolder]: 605/2225 cut-off events. [2022-11-20 10:55:11,858 INFO L131 PetriNetUnfolder]: For 1080/1357 co-relation queries the response was YES. [2022-11-20 10:55:11,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4598 conditions, 2225 events. 605/2225 cut-off events. For 1080/1357 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 24385 event pairs, 288 based on Foata normal form. 13/1846 useless extension candidates. Maximal degree in co-relation 4493. Up to 616 conditions per place. [2022-11-20 10:55:11,879 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 0 selfloop transitions, 0 changer transitions 291/291 dead transitions. [2022-11-20 10:55:11,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 291 transitions, 1130 flow [2022-11-20 10:55:11,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:11,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:55:11,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1716 transitions. [2022-11-20 10:55:11,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601503759398497 [2022-11-20 10:55:11,884 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1716 transitions. [2022-11-20 10:55:11,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1716 transitions. [2022-11-20 10:55:11,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:11,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1716 transitions. [2022-11-20 10:55:11,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 245.14285714285714) internal successors, (1716), 7 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:11,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:11,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:11,895 INFO L175 Difference]: Start difference. First operand has 334 places, 270 transitions, 936 flow. Second operand 7 states and 1716 transitions. [2022-11-20 10:55:11,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 291 transitions, 1130 flow [2022-11-20 10:55:11,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 291 transitions, 1128 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:55:11,910 INFO L231 Difference]: Finished difference. Result has 338 places, 0 transitions, 0 flow [2022-11-20 10:55:11,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=338, PETRI_TRANSITIONS=0} [2022-11-20 10:55:11,911 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 93 predicate places. [2022-11-20 10:55:11,912 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 0 transitions, 0 flow [2022-11-20 10:55:11,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.83333333333334) internal successors, (1445), 6 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:11,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-20 10:55:11,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-20 10:55:11,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-20 10:55:11,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-20 10:55:11,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-20 10:55:11,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-20 10:55:11,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-20 10:55:11,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-20 10:55:11,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-20 10:55:11,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-20 10:55:11,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-20 10:55:11,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-20 10:55:11,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-20 10:55:11,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-20 10:55:11,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-20 10:55:11,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-20 10:55:11,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-20 10:55:11,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-20 10:55:11,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-11-20 10:55:11,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-11-20 10:55:11,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-11-20 10:55:11,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-20 10:55:11,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-20 10:55:11,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-20 10:55:11,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-20 10:55:11,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-20 10:55:11,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-20 10:55:11,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-20 10:55:11,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-20 10:55:11,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-20 10:55:11,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-20 10:55:11,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-20 10:55:11,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-20 10:55:11,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-20 10:55:11,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-20 10:55:11,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-20 10:55:11,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-20 10:55:11,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-20 10:55:11,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-20 10:55:11,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 10:55:11,925 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:11,932 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:55:11,932 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:55:11,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:55:11 BasicIcfg [2022-11-20 10:55:11,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:55:11,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:55:11,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:55:11,940 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:55:11,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:49" (3/4) ... [2022-11-20 10:55:11,944 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:55:11,952 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 10:55:11,952 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 10:55:11,952 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 10:55:11,960 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 10:55:11,960 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 10:55:11,961 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:55:11,961 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:55:12,005 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:55:12,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:55:12,006 INFO L158 Benchmark]: Toolchain (without parser) took 23635.76ms. Allocated memory was 140.5MB in the beginning and 746.6MB in the end (delta: 606.1MB). Free memory was 111.1MB in the beginning and 533.1MB in the end (delta: -422.0MB). Peak memory consumption was 184.8MB. Max. memory is 16.1GB. [2022-11-20 10:55:12,006 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 115.3MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:55:12,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.01ms. Allocated memory is still 140.5MB. Free memory was 111.1MB in the beginning and 99.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:55:12,007 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.50ms. Allocated memory is still 140.5MB. Free memory was 99.9MB in the beginning and 97.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:12,007 INFO L158 Benchmark]: Boogie Preprocessor took 47.90ms. Allocated memory is still 140.5MB. Free memory was 97.8MB in the beginning and 96.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:12,008 INFO L158 Benchmark]: RCFGBuilder took 824.50ms. Allocated memory is still 140.5MB. Free memory was 96.1MB in the beginning and 74.1MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 10:55:12,008 INFO L158 Benchmark]: TraceAbstraction took 22357.97ms. Allocated memory was 140.5MB in the beginning and 746.6MB in the end (delta: 606.1MB). Free memory was 73.4MB in the beginning and 536.3MB in the end (delta: -462.9MB). Peak memory consumption was 277.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:12,009 INFO L158 Benchmark]: Witness Printer took 65.39ms. Allocated memory is still 746.6MB. Free memory was 536.3MB in the beginning and 533.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:12,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 115.3MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.01ms. Allocated memory is still 140.5MB. Free memory was 111.1MB in the beginning and 99.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.50ms. Allocated memory is still 140.5MB. Free memory was 99.9MB in the beginning and 97.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.90ms. Allocated memory is still 140.5MB. Free memory was 97.8MB in the beginning and 96.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 824.50ms. Allocated memory is still 140.5MB. Free memory was 96.1MB in the beginning and 74.1MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 22357.97ms. Allocated memory was 140.5MB in the beginning and 746.6MB in the end (delta: 606.1MB). Free memory was 73.4MB in the beginning and 536.3MB in the end (delta: -462.9MB). Peak memory consumption was 277.1MB. Max. memory is 16.1GB. * Witness Printer took 65.39ms. Allocated memory is still 746.6MB. Free memory was 536.3MB in the beginning and 533.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 440 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.1s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1491 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1491 mSDsluCounter, 763 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 386 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2465 IncrementalHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 377 mSDtfsCounter, 2465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=936occurred in iteration=26, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1986 ConstructedInterpolants, 0 QuantifiedInterpolants, 4157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 10:55:12,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97ccf0d-8f00-472d-9629-a820cde16a6c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE