./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/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_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/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_cc0e9524-bc3f-4679-a1bb-1e24befd7842/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 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- 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 12:20:38,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:20:38,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:20:38,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:20:38,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:20:38,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:20:38,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:20:38,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:20:38,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:20:38,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:20:38,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:20:38,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:20:38,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:20:38,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:20:38,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:20:38,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:20:38,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:20:38,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:20:38,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:20:38,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:20:38,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:20:38,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:20:38,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:20:38,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:20:38,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:20:38,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:20:38,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:20:38,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:20:38,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:20:38,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:20:38,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:20:38,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:20:38,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:20:38,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:20:38,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:20:38,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:20:38,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:20:38,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:20:38,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:20:38,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:20:38,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:20:38,371 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:20:38,412 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:20:38,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:20:38,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:20:38,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:20:38,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:20:38,414 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:20:38,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:20:38,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:20:38,416 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:20:38,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:20:38,417 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:20:38,417 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:20:38,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:20:38,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:20:38,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:20:38,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:20:38,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:20:38,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:20:38,419 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:20:38,419 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:20:38,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:20:38,419 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:20:38,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:20:38,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:20:38,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:20:38,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:20:38,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:20:38,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:20:38,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:20:38,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:20:38,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:20:38,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:20:38,422 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:20:38,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:20:38,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:20:38,423 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_cc0e9524-bc3f-4679-a1bb-1e24befd7842/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-11-20 12:20:38,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:20:38,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:20:38,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:20:38,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:20:38,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:20:38,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-20 12:20:41,790 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:20:42,011 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:20:42,011 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-20 12:20:42,021 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/data/7c5a82944/10a44b72428c4a0d87086a66909d9503/FLAG7e1fdb06b [2022-11-20 12:20:42,035 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/data/7c5a82944/10a44b72428c4a0d87086a66909d9503 [2022-11-20 12:20:42,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:20:42,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:20:42,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:20:42,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:20:42,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:20:42,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd3ae25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42, skipping insertion in model container [2022-11-20 12:20:42,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:20:42,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:20:42,256 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_cc0e9524-bc3f-4679-a1bb-1e24befd7842/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-20 12:20:42,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:20:42,273 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:20:42,302 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_cc0e9524-bc3f-4679-a1bb-1e24befd7842/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-20 12:20:42,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:20:42,322 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:20:42,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42 WrapperNode [2022-11-20 12:20:42,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:20:42,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:20:42,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:20:42,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:20:42,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,368 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 250 [2022-11-20 12:20:42,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:20:42,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:20:42,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:20:42,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:20:42,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,452 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:20:42,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:20:42,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:20:42,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:20:42,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42" (1/1) ... [2022-11-20 12:20:42,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:20:42,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:42,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:42,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:20:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:20:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:20:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:20:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:20:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:20:42,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:20:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:20:42,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:20:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:20:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:20:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:20:42,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:20:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:20:42,595 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 12:20:42,793 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:20:42,795 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:20:43,269 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:20:43,281 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:20:43,282 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:20:43,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:20:43 BoogieIcfgContainer [2022-11-20 12:20:43,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:20:43,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:20:43,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:20:43,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:20:43,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:20:42" (1/3) ... [2022-11-20 12:20:43,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebdd1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:20:43, skipping insertion in model container [2022-11-20 12:20:43,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:42" (2/3) ... [2022-11-20 12:20:43,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebdd1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:20:43, skipping insertion in model container [2022-11-20 12:20:43,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:20:43" (3/3) ... [2022-11-20 12:20:43,297 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2022-11-20 12:20:43,308 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:20:43,341 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:20:43,341 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-20 12:20:43,341 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:20:43,541 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:20:43,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 332 transitions, 680 flow [2022-11-20 12:20:43,787 INFO L130 PetriNetUnfolder]: 23/330 cut-off events. [2022-11-20 12:20:43,787 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:20:43,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 330 events. 23/330 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 725 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 206. Up to 2 conditions per place. [2022-11-20 12:20:43,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 332 transitions, 680 flow [2022-11-20 12:20:43,805 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 312 transitions, 636 flow [2022-11-20 12:20:43,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:20:43,822 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;@4c22f601, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:20:43,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-20 12:20:43,838 INFO L130 PetriNetUnfolder]: 3/92 cut-off events. [2022-11-20 12:20:43,838 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:20:43,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:43,839 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 12:20:43,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:43,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:43,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1291677977, now seen corresponding path program 1 times [2022-11-20 12:20:43,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:43,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603108056] [2022-11-20 12:20:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:43,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:44,291 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 12:20:44,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:44,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603108056] [2022-11-20 12:20:44,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603108056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:44,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:44,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:20:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120148029] [2022-11-20 12:20:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:44,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:44,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:44,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:44,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:44,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 332 [2022-11-20 12:20:44,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 312 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states 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 12:20:44,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:44,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 332 [2022-11-20 12:20:44,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:44,602 INFO L130 PetriNetUnfolder]: 17/513 cut-off events. [2022-11-20 12:20:44,603 INFO L131 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-11-20 12:20:44,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 513 events. 17/513 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2135 event pairs, 0 based on Foata normal form. 34/477 useless extension candidates. Maximal degree in co-relation 337. Up to 17 conditions per place. [2022-11-20 12:20:44,611 INFO L137 encePairwiseOnDemand]: 311/332 looper letters, 22 selfloop transitions, 4 changer transitions 6/309 dead transitions. [2022-11-20 12:20:44,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 309 transitions, 698 flow [2022-11-20 12:20:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:20:44,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:20:44,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1553 transitions. [2022-11-20 12:20:44,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9355421686746987 [2022-11-20 12:20:44,648 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1553 transitions. [2022-11-20 12:20:44,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1553 transitions. [2022-11-20 12:20:44,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:44,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1553 transitions. [2022-11-20 12:20:44,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states 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 12:20:44,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 12:20:44,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 12:20:44,676 INFO L175 Difference]: Start difference. First operand has 297 places, 312 transitions, 636 flow. Second operand 5 states and 1553 transitions. [2022-11-20 12:20:44,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 309 transitions, 698 flow [2022-11-20 12:20:44,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 309 transitions, 682 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:20:44,687 INFO L231 Difference]: Finished difference. Result has 298 places, 295 transitions, 617 flow [2022-11-20 12:20:44,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=617, PETRI_PLACES=298, PETRI_TRANSITIONS=295} [2022-11-20 12:20:44,693 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 1 predicate places. [2022-11-20 12:20:44,694 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 295 transitions, 617 flow [2022-11-20 12:20:44,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states 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 12:20:44,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:44,695 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:44,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:20:44,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:44,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:44,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2127374341, now seen corresponding path program 1 times [2022-11-20 12:20:44,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:44,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826040231] [2022-11-20 12:20:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:44,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:44,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:44,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826040231] [2022-11-20 12:20:44,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826040231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:20:44,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420165004] [2022-11-20 12:20:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:44,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:44,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:44,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:20:44,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:20:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:45,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:20:45,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:45,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:20:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:45,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420165004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:20:45,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:20:45,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:20:45,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053753815] [2022-11-20 12:20:45,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:20:45,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:20:45,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:20:45,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:20:45,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 332 [2022-11-20 12:20:45,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 295 transitions, 617 flow. Second operand has 12 states, 12 states have (on average 301.6666666666667) internal successors, (3620), 12 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states 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 12:20:45,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:45,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 332 [2022-11-20 12:20:45,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:45,860 INFO L130 PetriNetUnfolder]: 41/1146 cut-off events. [2022-11-20 12:20:45,861 INFO L131 PetriNetUnfolder]: For 16/21 co-relation queries the response was YES. [2022-11-20 12:20:45,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 1146 events. 41/1146 cut-off events. For 16/21 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6958 event pairs, 0 based on Foata normal form. 3/984 useless extension candidates. Maximal degree in co-relation 928. Up to 11 conditions per place. [2022-11-20 12:20:45,877 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 43 selfloop transitions, 18 changer transitions 0/338 dead transitions. [2022-11-20 12:20:45,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 338 transitions, 859 flow [2022-11-20 12:20:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:20:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:20:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5446 transitions. [2022-11-20 12:20:45,889 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9113119143239625 [2022-11-20 12:20:45,889 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5446 transitions. [2022-11-20 12:20:45,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5446 transitions. [2022-11-20 12:20:45,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:45,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5446 transitions. [2022-11-20 12:20:45,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 302.55555555555554) internal successors, (5446), 18 states have internal predecessors, (5446), 0 states have call successors, (0), 0 states 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 12:20:45,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states 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 12:20:45,924 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states 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 12:20:45,924 INFO L175 Difference]: Start difference. First operand has 298 places, 295 transitions, 617 flow. Second operand 18 states and 5446 transitions. [2022-11-20 12:20:45,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 338 transitions, 859 flow [2022-11-20 12:20:45,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 338 transitions, 857 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:20:45,937 INFO L231 Difference]: Finished difference. Result has 313 places, 307 transitions, 721 flow [2022-11-20 12:20:45,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=721, PETRI_PLACES=313, PETRI_TRANSITIONS=307} [2022-11-20 12:20:45,939 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 16 predicate places. [2022-11-20 12:20:45,939 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 307 transitions, 721 flow [2022-11-20 12:20:45,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 301.6666666666667) internal successors, (3620), 12 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states 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 12:20:45,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:45,944 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:45,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:46,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 12:20:46,150 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:46,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:46,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1524094548, now seen corresponding path program 1 times [2022-11-20 12:20:46,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:46,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658151521] [2022-11-20 12:20:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:46,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:46,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:46,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658151521] [2022-11-20 12:20:46,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658151521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:20:46,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140646413] [2022-11-20 12:20:46,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:46,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:46,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:46,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:20:46,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:20:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:46,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:20:46,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:46,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:20:46,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140646413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:46,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:20:46,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:20:46,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230196335] [2022-11-20 12:20:46,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:46,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:20:46,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:46,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:20:46,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:20:46,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 332 [2022-11-20 12:20:46,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 307 transitions, 721 flow. Second operand has 6 states, 6 states have (on average 301.3333333333333) internal successors, (1808), 6 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states 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 12:20:46,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:46,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 332 [2022-11-20 12:20:46,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:46,939 INFO L130 PetriNetUnfolder]: 41/1142 cut-off events. [2022-11-20 12:20:46,939 INFO L131 PetriNetUnfolder]: For 52/57 co-relation queries the response was YES. [2022-11-20 12:20:46,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 1142 events. 41/1142 cut-off events. For 52/57 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6949 event pairs, 0 based on Foata normal form. 4/981 useless extension candidates. Maximal degree in co-relation 1001. Up to 28 conditions per place. [2022-11-20 12:20:46,982 INFO L137 encePairwiseOnDemand]: 327/332 looper letters, 23 selfloop transitions, 11 changer transitions 0/311 dead transitions. [2022-11-20 12:20:46,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 311 transitions, 783 flow [2022-11-20 12:20:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:20:46,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:20:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2119 transitions. [2022-11-20 12:20:46,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9117900172117039 [2022-11-20 12:20:46,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2119 transitions. [2022-11-20 12:20:46,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2119 transitions. [2022-11-20 12:20:46,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:46,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2119 transitions. [2022-11-20 12:20:46,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 302.7142857142857) internal successors, (2119), 7 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states 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 12:20:47,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 12:20:47,004 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 12:20:47,005 INFO L175 Difference]: Start difference. First operand has 313 places, 307 transitions, 721 flow. Second operand 7 states and 2119 transitions. [2022-11-20 12:20:47,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 311 transitions, 783 flow [2022-11-20 12:20:47,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 311 transitions, 751 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 12:20:47,016 INFO L231 Difference]: Finished difference. Result has 309 places, 303 transitions, 684 flow [2022-11-20 12:20:47,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=684, PETRI_PLACES=309, PETRI_TRANSITIONS=303} [2022-11-20 12:20:47,019 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 12 predicate places. [2022-11-20 12:20:47,019 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 303 transitions, 684 flow [2022-11-20 12:20:47,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 301.3333333333333) internal successors, (1808), 6 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states 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 12:20:47,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:47,020 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:47,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:47,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:47,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:47,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:47,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1398389861, now seen corresponding path program 1 times [2022-11-20 12:20:47,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:47,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005706509] [2022-11-20 12:20:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:47,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:47,402 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 12:20:47,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:47,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005706509] [2022-11-20 12:20:47,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005706509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:47,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:47,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:20:47,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942578098] [2022-11-20 12:20:47,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:47,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:47,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:47,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:47,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:47,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-20 12:20:47,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 303 transitions, 684 flow. Second operand has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 12:20:47,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:47,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-20 12:20:47,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:48,486 INFO L130 PetriNetUnfolder]: 246/4032 cut-off events. [2022-11-20 12:20:48,486 INFO L131 PetriNetUnfolder]: For 32/37 co-relation queries the response was YES. [2022-11-20 12:20:48,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4483 conditions, 4032 events. 246/4032 cut-off events. For 32/37 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 39592 event pairs, 15 based on Foata normal form. 0/3382 useless extension candidates. Maximal degree in co-relation 3583. Up to 177 conditions per place. [2022-11-20 12:20:48,527 INFO L137 encePairwiseOnDemand]: 324/332 looper letters, 22 selfloop transitions, 6 changer transitions 0/315 dead transitions. [2022-11-20 12:20:48,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 315 transitions, 768 flow [2022-11-20 12:20:48,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:20:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:20:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1520 transitions. [2022-11-20 12:20:48,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9156626506024096 [2022-11-20 12:20:48,531 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1520 transitions. [2022-11-20 12:20:48,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1520 transitions. [2022-11-20 12:20:48,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:48,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1520 transitions. [2022-11-20 12:20:48,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 12:20:48,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 12:20:48,541 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 12:20:48,542 INFO L175 Difference]: Start difference. First operand has 309 places, 303 transitions, 684 flow. Second operand 5 states and 1520 transitions. [2022-11-20 12:20:48,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 315 transitions, 768 flow [2022-11-20 12:20:48,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 315 transitions, 754 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:20:48,550 INFO L231 Difference]: Finished difference. Result has 311 places, 306 transitions, 706 flow [2022-11-20 12:20:48,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=706, PETRI_PLACES=311, PETRI_TRANSITIONS=306} [2022-11-20 12:20:48,552 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 14 predicate places. [2022-11-20 12:20:48,553 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 306 transitions, 706 flow [2022-11-20 12:20:48,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 12:20:48,553 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:48,554 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:48,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:20:48,554 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:48,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1282797909, now seen corresponding path program 1 times [2022-11-20 12:20:48,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:48,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003145121] [2022-11-20 12:20:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:48,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:48,664 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 12:20:48,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:48,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003145121] [2022-11-20 12:20:48,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003145121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:48,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:48,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:20:48,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328818605] [2022-11-20 12:20:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:48,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:20:48,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:48,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:20:48,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:20:48,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 332 [2022-11-20 12:20:48,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 306 transitions, 706 flow. Second operand has 5 states, 5 states have (on average 300.8) internal successors, (1504), 5 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states 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 12:20:48,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:48,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 332 [2022-11-20 12:20:48,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:49,005 INFO L130 PetriNetUnfolder]: 45/1290 cut-off events. [2022-11-20 12:20:49,005 INFO L131 PetriNetUnfolder]: For 57/65 co-relation queries the response was YES. [2022-11-20 12:20:49,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 1290 events. 45/1290 cut-off events. For 57/65 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8291 event pairs, 0 based on Foata normal form. 0/1110 useless extension candidates. Maximal degree in co-relation 1320. Up to 41 conditions per place. [2022-11-20 12:20:49,031 INFO L137 encePairwiseOnDemand]: 327/332 looper letters, 21 selfloop transitions, 4 changer transitions 0/308 dead transitions. [2022-11-20 12:20:49,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 308 transitions, 760 flow [2022-11-20 12:20:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:20:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:20:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1515 transitions. [2022-11-20 12:20:49,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9126506024096386 [2022-11-20 12:20:49,036 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1515 transitions. [2022-11-20 12:20:49,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1515 transitions. [2022-11-20 12:20:49,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:49,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1515 transitions. [2022-11-20 12:20:49,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.0) internal successors, (1515), 5 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states 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 12:20:49,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 12:20:49,045 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 12:20:49,045 INFO L175 Difference]: Start difference. First operand has 311 places, 306 transitions, 706 flow. Second operand 5 states and 1515 transitions. [2022-11-20 12:20:49,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 308 transitions, 760 flow [2022-11-20 12:20:49,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 308 transitions, 756 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:20:49,054 INFO L231 Difference]: Finished difference. Result has 315 places, 306 transitions, 714 flow [2022-11-20 12:20:49,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=714, PETRI_PLACES=315, PETRI_TRANSITIONS=306} [2022-11-20 12:20:49,057 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 18 predicate places. [2022-11-20 12:20:49,057 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 306 transitions, 714 flow [2022-11-20 12:20:49,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 300.8) internal successors, (1504), 5 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states 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 12:20:49,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:49,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:49,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:20:49,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:49,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:49,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1169997581, now seen corresponding path program 1 times [2022-11-20 12:20:49,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:49,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838182217] [2022-11-20 12:20:49,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:49,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:49,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:49,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838182217] [2022-11-20 12:20:49,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838182217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:20:49,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985083461] [2022-11-20 12:20:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:49,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:49,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:49,256 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:20:49,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:20:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:49,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:20:49,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:49,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:20:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:49,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985083461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:20:49,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:20:49,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-20 12:20:49,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533711033] [2022-11-20 12:20:49,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:20:49,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:20:49,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:49,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:20:49,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:20:49,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-11-20 12:20:49,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 306 transitions, 714 flow. Second operand has 14 states, 14 states have (on average 296.85714285714283) internal successors, (4156), 14 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states 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 12:20:49,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:49,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-11-20 12:20:49,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:49,937 INFO L130 PetriNetUnfolder]: 23/706 cut-off events. [2022-11-20 12:20:49,937 INFO L131 PetriNetUnfolder]: For 46/50 co-relation queries the response was YES. [2022-11-20 12:20:49,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 706 events. 23/706 cut-off events. For 46/50 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3207 event pairs, 0 based on Foata normal form. 2/620 useless extension candidates. Maximal degree in co-relation 716. Up to 19 conditions per place. [2022-11-20 12:20:49,946 INFO L137 encePairwiseOnDemand]: 324/332 looper letters, 27 selfloop transitions, 13 changer transitions 0/315 dead transitions. [2022-11-20 12:20:49,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 315 transitions, 816 flow [2022-11-20 12:20:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:20:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:20:49,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3270 transitions. [2022-11-20 12:20:49,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8953997809419496 [2022-11-20 12:20:49,954 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3270 transitions. [2022-11-20 12:20:49,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3270 transitions. [2022-11-20 12:20:49,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:49,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3270 transitions. [2022-11-20 12:20:49,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 297.27272727272725) internal successors, (3270), 11 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:20:49,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 332.0) internal successors, (3984), 12 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states 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 12:20:49,973 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 332.0) internal successors, (3984), 12 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states 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 12:20:49,973 INFO L175 Difference]: Start difference. First operand has 315 places, 306 transitions, 714 flow. Second operand 11 states and 3270 transitions. [2022-11-20 12:20:49,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 315 transitions, 816 flow [2022-11-20 12:20:49,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 315 transitions, 808 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:20:49,980 INFO L231 Difference]: Finished difference. Result has 324 places, 307 transitions, 753 flow [2022-11-20 12:20:49,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=753, PETRI_PLACES=324, PETRI_TRANSITIONS=307} [2022-11-20 12:20:49,981 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 27 predicate places. [2022-11-20 12:20:49,981 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 307 transitions, 753 flow [2022-11-20 12:20:49,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 296.85714285714283) internal successors, (4156), 14 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states 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 12:20:49,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:49,984 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:49,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:50,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:50,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:50,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:50,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1124360807, now seen corresponding path program 2 times [2022-11-20 12:20:50,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:50,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179456862] [2022-11-20 12:20:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:50,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:20:50,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:50,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179456862] [2022-11-20 12:20:50,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179456862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:20:50,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196463888] [2022-11-20 12:20:50,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:20:50,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:50,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:50,448 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:20:50,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:20:50,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:20:50,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:20:50,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:20:50,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:20:50,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:20:50,846 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:20:50,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196463888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:20:50,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:20:50,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-20 12:20:50,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808306549] [2022-11-20 12:20:50,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:20:50,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:20:50,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:50,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:20:50,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:20:50,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-11-20 12:20:50,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 307 transitions, 753 flow. Second operand has 17 states, 17 states have (on average 297.94117647058823) internal successors, (5065), 17 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states 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 12:20:50,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:50,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-11-20 12:20:50,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:51,260 INFO L130 PetriNetUnfolder]: 11/396 cut-off events. [2022-11-20 12:20:51,261 INFO L131 PetriNetUnfolder]: For 43/45 co-relation queries the response was YES. [2022-11-20 12:20:51,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 396 events. 11/396 cut-off events. For 43/45 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1042 event pairs, 0 based on Foata normal form. 1/353 useless extension candidates. Maximal degree in co-relation 484. Up to 6 conditions per place. [2022-11-20 12:20:51,266 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 19 selfloop transitions, 13 changer transitions 0/307 dead transitions. [2022-11-20 12:20:51,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 307 transitions, 786 flow [2022-11-20 12:20:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:20:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:20:51,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4443 transitions. [2022-11-20 12:20:51,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8921686746987951 [2022-11-20 12:20:51,275 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4443 transitions. [2022-11-20 12:20:51,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4443 transitions. [2022-11-20 12:20:51,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:51,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4443 transitions. [2022-11-20 12:20:51,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 296.2) internal successors, (4443), 15 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states 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 12:20:51,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 332.0) internal successors, (5312), 16 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states 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 12:20:51,298 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 332.0) internal successors, (5312), 16 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states 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 12:20:51,299 INFO L175 Difference]: Start difference. First operand has 324 places, 307 transitions, 753 flow. Second operand 15 states and 4443 transitions. [2022-11-20 12:20:51,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 307 transitions, 786 flow [2022-11-20 12:20:51,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 307 transitions, 741 flow, removed 3 selfloop flow, removed 17 redundant places. [2022-11-20 12:20:51,305 INFO L231 Difference]: Finished difference. Result has 319 places, 300 transitions, 691 flow [2022-11-20 12:20:51,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=691, PETRI_PLACES=319, PETRI_TRANSITIONS=300} [2022-11-20 12:20:51,306 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 22 predicate places. [2022-11-20 12:20:51,307 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 300 transitions, 691 flow [2022-11-20 12:20:51,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 297.94117647058823) internal successors, (5065), 17 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states 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 12:20:51,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:51,309 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:51,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:51,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:20:51,515 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:51,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash 365787341, now seen corresponding path program 2 times [2022-11-20 12:20:51,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:51,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843060862] [2022-11-20 12:20:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:51,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:51,666 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:20:51,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:51,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843060862] [2022-11-20 12:20:51,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843060862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:51,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:51,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:20:51,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867839098] [2022-11-20 12:20:51,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:51,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:20:51,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:51,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:20:51,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:20:51,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 332 [2022-11-20 12:20:51,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 300 transitions, 691 flow. Second operand has 6 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 12:20:51,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:51,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 332 [2022-11-20 12:20:51,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:52,143 INFO L130 PetriNetUnfolder]: 318/2012 cut-off events. [2022-11-20 12:20:52,144 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-20 12:20:52,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2766 conditions, 2012 events. 318/2012 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 15742 event pairs, 46 based on Foata normal form. 0/1748 useless extension candidates. Maximal degree in co-relation 2754. Up to 440 conditions per place. [2022-11-20 12:20:52,159 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 44 selfloop transitions, 5 changer transitions 0/312 dead transitions. [2022-11-20 12:20:52,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 312 transitions, 816 flow [2022-11-20 12:20:52,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:20:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:20:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1712 transitions. [2022-11-20 12:20:52,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8594377510040161 [2022-11-20 12:20:52,164 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1712 transitions. [2022-11-20 12:20:52,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1712 transitions. [2022-11-20 12:20:52,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:52,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1712 transitions. [2022-11-20 12:20:52,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.3333333333333) internal successors, (1712), 6 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 12:20:52,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 12:20:52,174 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 12:20:52,174 INFO L175 Difference]: Start difference. First operand has 319 places, 300 transitions, 691 flow. Second operand 6 states and 1712 transitions. [2022-11-20 12:20:52,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 312 transitions, 816 flow [2022-11-20 12:20:52,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 312 transitions, 791 flow, removed 1 selfloop flow, removed 12 redundant places. [2022-11-20 12:20:52,180 INFO L231 Difference]: Finished difference. Result has 311 places, 299 transitions, 674 flow [2022-11-20 12:20:52,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=674, PETRI_PLACES=311, PETRI_TRANSITIONS=299} [2022-11-20 12:20:52,183 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 14 predicate places. [2022-11-20 12:20:52,183 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 299 transitions, 674 flow [2022-11-20 12:20:52,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 12:20:52,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:52,184 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:52,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:20:52,186 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:52,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:52,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1545493470, now seen corresponding path program 1 times [2022-11-20 12:20:52,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:52,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948255226] [2022-11-20 12:20:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:52,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:20:52,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:52,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948255226] [2022-11-20 12:20:52,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948255226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:52,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:52,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:20:52,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392819492] [2022-11-20 12:20:52,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:52,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:52,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:52,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:52,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-20 12:20:52,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 299 transitions, 674 flow. Second operand has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states 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 12:20:52,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:52,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-20 12:20:52,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:52,575 INFO L130 PetriNetUnfolder]: 85/1074 cut-off events. [2022-11-20 12:20:52,575 INFO L131 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-11-20 12:20:52,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 1074 events. 85/1074 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6454 event pairs, 24 based on Foata normal form. 0/932 useless extension candidates. Maximal degree in co-relation 1359. Up to 84 conditions per place. [2022-11-20 12:20:52,588 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 32 selfloop transitions, 4 changer transitions 0/310 dead transitions. [2022-11-20 12:20:52,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 310 transitions, 771 flow [2022-11-20 12:20:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:20:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:20:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1190 transitions. [2022-11-20 12:20:52,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8960843373493976 [2022-11-20 12:20:52,591 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1190 transitions. [2022-11-20 12:20:52,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1190 transitions. [2022-11-20 12:20:52,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:52,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1190 transitions. [2022-11-20 12:20:52,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.5) internal successors, (1190), 4 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states 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 12:20:52,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:20:52,598 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:20:52,599 INFO L175 Difference]: Start difference. First operand has 311 places, 299 transitions, 674 flow. Second operand 4 states and 1190 transitions. [2022-11-20 12:20:52,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 310 transitions, 771 flow [2022-11-20 12:20:52,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 310 transitions, 762 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:20:52,604 INFO L231 Difference]: Finished difference. Result has 312 places, 300 transitions, 689 flow [2022-11-20 12:20:52,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=689, PETRI_PLACES=312, PETRI_TRANSITIONS=300} [2022-11-20 12:20:52,606 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 15 predicate places. [2022-11-20 12:20:52,606 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 300 transitions, 689 flow [2022-11-20 12:20:52,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states 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 12:20:52,607 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:52,607 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:52,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:20:52,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1408127375, now seen corresponding path program 1 times [2022-11-20 12:20:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:52,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918455135] [2022-11-20 12:20:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:52,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:20:52,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:52,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918455135] [2022-11-20 12:20:52,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918455135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:52,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:52,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:20:52,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408303066] [2022-11-20 12:20:52,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:52,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:52,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:52,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:52,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:52,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-20 12:20:52,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 300 transitions, 689 flow. Second operand has 4 states, 4 states have (on average 300.25) internal successors, (1201), 4 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states 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 12:20:52,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:52,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-20 12:20:52,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:53,136 INFO L130 PetriNetUnfolder]: 162/1689 cut-off events. [2022-11-20 12:20:53,137 INFO L131 PetriNetUnfolder]: For 128/134 co-relation queries the response was YES. [2022-11-20 12:20:53,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 1689 events. 162/1689 cut-off events. For 128/134 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 13126 event pairs, 18 based on Foata normal form. 0/1378 useless extension candidates. Maximal degree in co-relation 2000. Up to 147 conditions per place. [2022-11-20 12:20:53,151 INFO L137 encePairwiseOnDemand]: 324/332 looper letters, 21 selfloop transitions, 6 changer transitions 0/311 dead transitions. [2022-11-20 12:20:53,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 311 transitions, 768 flow [2022-11-20 12:20:53,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:20:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:20:53,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1519 transitions. [2022-11-20 12:20:53,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9150602409638554 [2022-11-20 12:20:53,156 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1519 transitions. [2022-11-20 12:20:53,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1519 transitions. [2022-11-20 12:20:53,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:53,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1519 transitions. [2022-11-20 12:20:53,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.8) internal successors, (1519), 5 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states 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 12:20:53,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 12:20:53,164 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 12:20:53,164 INFO L175 Difference]: Start difference. First operand has 312 places, 300 transitions, 689 flow. Second operand 5 states and 1519 transitions. [2022-11-20 12:20:53,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 311 transitions, 768 flow [2022-11-20 12:20:53,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 311 transitions, 768 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:20:53,171 INFO L231 Difference]: Finished difference. Result has 319 places, 303 transitions, 725 flow [2022-11-20 12:20:53,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=725, PETRI_PLACES=319, PETRI_TRANSITIONS=303} [2022-11-20 12:20:53,173 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 22 predicate places. [2022-11-20 12:20:53,173 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 303 transitions, 725 flow [2022-11-20 12:20:53,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.25) internal successors, (1201), 4 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states 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 12:20:53,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:53,174 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:53,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:20:53,174 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:53,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:53,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1909481087, now seen corresponding path program 1 times [2022-11-20 12:20:53,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:53,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757958651] [2022-11-20 12:20:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:53,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:20:53,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:53,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757958651] [2022-11-20 12:20:53,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757958651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:53,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:53,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:20:53,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785199042] [2022-11-20 12:20:53,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:53,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:20:53,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:53,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:20:53,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:20:53,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 332 [2022-11-20 12:20:53,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 303 transitions, 725 flow. Second operand has 6 states, 6 states have (on average 279.3333333333333) internal successors, (1676), 6 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states 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 12:20:53,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:53,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 332 [2022-11-20 12:20:53,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:54,356 INFO L130 PetriNetUnfolder]: 664/4235 cut-off events. [2022-11-20 12:20:54,357 INFO L131 PetriNetUnfolder]: For 318/318 co-relation queries the response was YES. [2022-11-20 12:20:54,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5859 conditions, 4235 events. 664/4235 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 42700 event pairs, 92 based on Foata normal form. 0/3620 useless extension candidates. Maximal degree in co-relation 5841. Up to 930 conditions per place. [2022-11-20 12:20:54,384 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 43 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2022-11-20 12:20:54,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 314 transitions, 845 flow [2022-11-20 12:20:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:20:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:20:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1711 transitions. [2022-11-20 12:20:54,388 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8589357429718876 [2022-11-20 12:20:54,389 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1711 transitions. [2022-11-20 12:20:54,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1711 transitions. [2022-11-20 12:20:54,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:54,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1711 transitions. [2022-11-20 12:20:54,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.1666666666667) internal successors, (1711), 6 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 12:20:54,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 12:20:54,398 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 12:20:54,398 INFO L175 Difference]: Start difference. First operand has 319 places, 303 transitions, 725 flow. Second operand 6 states and 1711 transitions. [2022-11-20 12:20:54,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 314 transitions, 845 flow [2022-11-20 12:20:54,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 314 transitions, 841 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:20:54,406 INFO L231 Difference]: Finished difference. Result has 322 places, 302 transitions, 729 flow [2022-11-20 12:20:54,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=729, PETRI_PLACES=322, PETRI_TRANSITIONS=302} [2022-11-20 12:20:54,407 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 25 predicate places. [2022-11-20 12:20:54,407 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 302 transitions, 729 flow [2022-11-20 12:20:54,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.3333333333333) internal successors, (1676), 6 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states 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 12:20:54,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:54,408 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:54,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:20:54,408 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:54,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:54,409 INFO L85 PathProgramCache]: Analyzing trace with hash -935627504, now seen corresponding path program 1 times [2022-11-20 12:20:54,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:54,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789110658] [2022-11-20 12:20:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:54,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:20:54,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:54,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789110658] [2022-11-20 12:20:54,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789110658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:54,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:54,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:20:54,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814225303] [2022-11-20 12:20:54,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:54,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:54,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:54,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:54,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:54,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-20 12:20:54,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 302 transitions, 729 flow. Second operand has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 12:20:54,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:54,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-20 12:20:54,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:55,111 INFO L130 PetriNetUnfolder]: 370/1958 cut-off events. [2022-11-20 12:20:55,112 INFO L131 PetriNetUnfolder]: For 372/378 co-relation queries the response was YES. [2022-11-20 12:20:55,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2832 conditions, 1958 events. 370/1958 cut-off events. For 372/378 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 19171 event pairs, 144 based on Foata normal form. 0/1462 useless extension candidates. Maximal degree in co-relation 2814. Up to 352 conditions per place. [2022-11-20 12:20:55,129 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 31 selfloop transitions, 4 changer transitions 0/312 dead transitions. [2022-11-20 12:20:55,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 312 transitions, 821 flow [2022-11-20 12:20:55,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:20:55,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:20:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1189 transitions. [2022-11-20 12:20:55,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8953313253012049 [2022-11-20 12:20:55,133 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1189 transitions. [2022-11-20 12:20:55,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1189 transitions. [2022-11-20 12:20:55,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:55,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1189 transitions. [2022-11-20 12:20:55,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states 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 12:20:55,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:20:55,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:20:55,140 INFO L175 Difference]: Start difference. First operand has 322 places, 302 transitions, 729 flow. Second operand 4 states and 1189 transitions. [2022-11-20 12:20:55,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 312 transitions, 821 flow [2022-11-20 12:20:55,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 312 transitions, 812 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:20:55,147 INFO L231 Difference]: Finished difference. Result has 323 places, 303 transitions, 744 flow [2022-11-20 12:20:55,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=744, PETRI_PLACES=323, PETRI_TRANSITIONS=303} [2022-11-20 12:20:55,149 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 26 predicate places. [2022-11-20 12:20:55,149 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 303 transitions, 744 flow [2022-11-20 12:20:55,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 12:20:55,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:55,150 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:55,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:20:55,150 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:55,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:55,151 INFO L85 PathProgramCache]: Analyzing trace with hash 660666378, now seen corresponding path program 1 times [2022-11-20 12:20:55,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:55,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865788388] [2022-11-20 12:20:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:55,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:20:55,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:55,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865788388] [2022-11-20 12:20:55,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865788388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:55,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:55,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:20:55,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506905703] [2022-11-20 12:20:55,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:55,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:55,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:55,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:55,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:55,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-20 12:20:55,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 303 transitions, 744 flow. Second operand has 4 states, 4 states have (on average 290.25) internal successors, (1161), 4 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states 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 12:20:55,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:55,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-20 12:20:55,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:55,716 INFO L130 PetriNetUnfolder]: 86/1865 cut-off events. [2022-11-20 12:20:55,716 INFO L131 PetriNetUnfolder]: For 98/100 co-relation queries the response was YES. [2022-11-20 12:20:55,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 1865 events. 86/1865 cut-off events. For 98/100 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 13263 event pairs, 24 based on Foata normal form. 4/1665 useless extension candidates. Maximal degree in co-relation 2354. Up to 79 conditions per place. [2022-11-20 12:20:55,736 INFO L137 encePairwiseOnDemand]: 328/332 looper letters, 32 selfloop transitions, 3 changer transitions 0/312 dead transitions. [2022-11-20 12:20:55,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 312 transitions, 831 flow [2022-11-20 12:20:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:20:55,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:20:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1188 transitions. [2022-11-20 12:20:55,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8945783132530121 [2022-11-20 12:20:55,740 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1188 transitions. [2022-11-20 12:20:55,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1188 transitions. [2022-11-20 12:20:55,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:55,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1188 transitions. [2022-11-20 12:20:55,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states 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 12:20:55,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:20:55,747 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:20:55,747 INFO L175 Difference]: Start difference. First operand has 323 places, 303 transitions, 744 flow. Second operand 4 states and 1188 transitions. [2022-11-20 12:20:55,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 312 transitions, 831 flow [2022-11-20 12:20:55,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 312 transitions, 829 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:20:55,754 INFO L231 Difference]: Finished difference. Result has 325 places, 302 transitions, 742 flow [2022-11-20 12:20:55,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=742, PETRI_PLACES=325, PETRI_TRANSITIONS=302} [2022-11-20 12:20:55,757 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 28 predicate places. [2022-11-20 12:20:55,757 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 302 transitions, 742 flow [2022-11-20 12:20:55,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.25) internal successors, (1161), 4 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states 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 12:20:55,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:55,758 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:55,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:20:55,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:55,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:55,760 INFO L85 PathProgramCache]: Analyzing trace with hash -994177894, now seen corresponding path program 1 times [2022-11-20 12:20:55,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:55,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804067] [2022-11-20 12:20:55,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:55,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:20:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:55,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804067] [2022-11-20 12:20:55,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:55,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:55,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:20:55,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561228051] [2022-11-20 12:20:55,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:55,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:20:55,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:55,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:20:55,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:20:55,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 332 [2022-11-20 12:20:55,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 302 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 279.5) internal successors, (1677), 6 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states 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 12:20:55,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:55,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 332 [2022-11-20 12:20:55,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:57,029 INFO L130 PetriNetUnfolder]: 561/4525 cut-off events. [2022-11-20 12:20:57,030 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2022-11-20 12:20:57,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6269 conditions, 4525 events. 561/4525 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 45616 event pairs, 70 based on Foata normal form. 0/4058 useless extension candidates. Maximal degree in co-relation 6249. Up to 848 conditions per place. [2022-11-20 12:20:57,078 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 42 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2022-11-20 12:20:57,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 314 transitions, 863 flow [2022-11-20 12:20:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:20:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:20:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1710 transitions. [2022-11-20 12:20:57,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.858433734939759 [2022-11-20 12:20:57,084 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1710 transitions. [2022-11-20 12:20:57,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1710 transitions. [2022-11-20 12:20:57,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:57,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1710 transitions. [2022-11-20 12:20:57,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.0) internal successors, (1710), 6 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 12:20:57,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 12:20:57,096 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 12:20:57,096 INFO L175 Difference]: Start difference. First operand has 325 places, 302 transitions, 742 flow. Second operand 6 states and 1710 transitions. [2022-11-20 12:20:57,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 314 transitions, 863 flow [2022-11-20 12:20:57,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 314 transitions, 858 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:20:57,105 INFO L231 Difference]: Finished difference. Result has 327 places, 301 transitions, 745 flow [2022-11-20 12:20:57,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=745, PETRI_PLACES=327, PETRI_TRANSITIONS=301} [2022-11-20 12:20:57,106 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 30 predicate places. [2022-11-20 12:20:57,107 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 301 transitions, 745 flow [2022-11-20 12:20:57,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.5) internal successors, (1677), 6 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states 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 12:20:57,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:57,108 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:57,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:20:57,108 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:57,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1502566625, now seen corresponding path program 1 times [2022-11-20 12:20:57,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:57,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965999360] [2022-11-20 12:20:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:20:57,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:57,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965999360] [2022-11-20 12:20:57,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965999360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:57,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:57,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:20:57,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726040421] [2022-11-20 12:20:57,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:57,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:57,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:57,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:57,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:57,221 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-20 12:20:57,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 301 transitions, 745 flow. Second operand has 4 states, 4 states have (on average 290.5) internal successors, (1162), 4 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states 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 12:20:57,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:57,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-20 12:20:57,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:57,702 INFO L130 PetriNetUnfolder]: 98/1967 cut-off events. [2022-11-20 12:20:57,703 INFO L131 PetriNetUnfolder]: For 66/68 co-relation queries the response was YES. [2022-11-20 12:20:57,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 1967 events. 98/1967 cut-off events. For 66/68 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 14526 event pairs, 36 based on Foata normal form. 4/1759 useless extension candidates. Maximal degree in co-relation 2523. Up to 117 conditions per place. [2022-11-20 12:20:57,724 INFO L137 encePairwiseOnDemand]: 328/332 looper letters, 29 selfloop transitions, 3 changer transitions 0/310 dead transitions. [2022-11-20 12:20:57,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 310 transitions, 828 flow [2022-11-20 12:20:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:20:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:20:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1185 transitions. [2022-11-20 12:20:57,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8923192771084337 [2022-11-20 12:20:57,728 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1185 transitions. [2022-11-20 12:20:57,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1185 transitions. [2022-11-20 12:20:57,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:57,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1185 transitions. [2022-11-20 12:20:57,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states 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 12:20:57,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:20:57,734 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:20:57,734 INFO L175 Difference]: Start difference. First operand has 327 places, 301 transitions, 745 flow. Second operand 4 states and 1185 transitions. [2022-11-20 12:20:57,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 310 transitions, 828 flow [2022-11-20 12:20:57,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 310 transitions, 817 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:20:57,741 INFO L231 Difference]: Finished difference. Result has 325 places, 301 transitions, 743 flow [2022-11-20 12:20:57,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=743, PETRI_PLACES=325, PETRI_TRANSITIONS=301} [2022-11-20 12:20:57,745 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 28 predicate places. [2022-11-20 12:20:57,745 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 301 transitions, 743 flow [2022-11-20 12:20:57,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.5) internal successors, (1162), 4 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states 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 12:20:57,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:57,746 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:57,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:20:57,747 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash -929551624, now seen corresponding path program 1 times [2022-11-20 12:20:57,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:57,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026483029] [2022-11-20 12:20:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:57,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:20:57,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:57,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026483029] [2022-11-20 12:20:57,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026483029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:57,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:57,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:20:57,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77694970] [2022-11-20 12:20:57,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:57,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:57,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:57,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:57,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-20 12:20:57,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 301 transitions, 743 flow. Second operand has 4 states, 4 states have (on average 290.5) internal successors, (1162), 4 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states 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 12:20:57,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:57,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-20 12:20:57,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:58,483 INFO L130 PetriNetUnfolder]: 468/2420 cut-off events. [2022-11-20 12:20:58,483 INFO L131 PetriNetUnfolder]: For 656/664 co-relation queries the response was YES. [2022-11-20 12:20:58,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3690 conditions, 2420 events. 468/2420 cut-off events. For 656/664 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 25340 event pairs, 192 based on Foata normal form. 18/1816 useless extension candidates. Maximal degree in co-relation 3669. Up to 456 conditions per place. [2022-11-20 12:20:58,504 INFO L137 encePairwiseOnDemand]: 328/332 looper letters, 31 selfloop transitions, 3 changer transitions 0/309 dead transitions. [2022-11-20 12:20:58,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 309 transitions, 825 flow [2022-11-20 12:20:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:20:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:20:58,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1187 transitions. [2022-11-20 12:20:58,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8938253012048193 [2022-11-20 12:20:58,507 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1187 transitions. [2022-11-20 12:20:58,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1187 transitions. [2022-11-20 12:20:58,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:20:58,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1187 transitions. [2022-11-20 12:20:58,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.75) internal successors, (1187), 4 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states 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 12:20:58,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:20:58,513 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:20:58,514 INFO L175 Difference]: Start difference. First operand has 325 places, 301 transitions, 743 flow. Second operand 4 states and 1187 transitions. [2022-11-20 12:20:58,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 309 transitions, 825 flow [2022-11-20 12:20:58,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 309 transitions, 821 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:20:58,521 INFO L231 Difference]: Finished difference. Result has 326 places, 300 transitions, 739 flow [2022-11-20 12:20:58,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=739, PETRI_PLACES=326, PETRI_TRANSITIONS=300} [2022-11-20 12:20:58,522 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 29 predicate places. [2022-11-20 12:20:58,522 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 300 transitions, 739 flow [2022-11-20 12:20:58,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.5) internal successors, (1162), 4 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states 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 12:20:58,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:20:58,523 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:58,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:20:58,524 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:20:58,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:58,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1977559137, now seen corresponding path program 1 times [2022-11-20 12:20:58,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:58,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394396251] [2022-11-20 12:20:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:58,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:20:58,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:58,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394396251] [2022-11-20 12:20:58,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394396251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:58,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:58,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:20:58,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587783033] [2022-11-20 12:20:58,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:58,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:20:58,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:58,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:20:58,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:20:58,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 332 [2022-11-20 12:20:58,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 300 transitions, 739 flow. Second operand has 8 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states 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 12:20:58,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:20:58,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 332 [2022-11-20 12:20:58,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:20:59,962 INFO L130 PetriNetUnfolder]: 795/5211 cut-off events. [2022-11-20 12:20:59,962 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2022-11-20 12:20:59,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7649 conditions, 5211 events. 795/5211 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 54950 event pairs, 70 based on Foata normal form. 0/4763 useless extension candidates. Maximal degree in co-relation 7629. Up to 786 conditions per place. [2022-11-20 12:21:00,010 INFO L137 encePairwiseOnDemand]: 322/332 looper letters, 57 selfloop transitions, 9 changer transitions 0/327 dead transitions. [2022-11-20 12:21:00,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 327 transitions, 930 flow [2022-11-20 12:21:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:21:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:21:00,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2243 transitions. [2022-11-20 12:21:00,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8445030120481928 [2022-11-20 12:21:00,018 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2243 transitions. [2022-11-20 12:21:00,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2243 transitions. [2022-11-20 12:21:00,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:00,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2243 transitions. [2022-11-20 12:21:00,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.375) internal successors, (2243), 8 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states 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 12:21:00,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 12:21:00,032 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 12:21:00,032 INFO L175 Difference]: Start difference. First operand has 326 places, 300 transitions, 739 flow. Second operand 8 states and 2243 transitions. [2022-11-20 12:21:00,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 327 transitions, 930 flow [2022-11-20 12:21:00,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 327 transitions, 925 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:21:00,043 INFO L231 Difference]: Finished difference. Result has 333 places, 301 transitions, 764 flow [2022-11-20 12:21:00,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=333, PETRI_TRANSITIONS=301} [2022-11-20 12:21:00,044 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 36 predicate places. [2022-11-20 12:21:00,044 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 301 transitions, 764 flow [2022-11-20 12:21:00,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states 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 12:21:00,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:00,045 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:00,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:21:00,045 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:00,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:00,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1248671692, now seen corresponding path program 1 times [2022-11-20 12:21:00,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:00,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183104058] [2022-11-20 12:21:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:00,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:00,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:00,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183104058] [2022-11-20 12:21:00,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183104058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:00,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:00,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:21:00,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465019444] [2022-11-20 12:21:00,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:00,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:21:00,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:00,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:21:00,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:21:00,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 332 [2022-11-20 12:21:00,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 301 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states 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 12:21:00,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:00,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 332 [2022-11-20 12:21:00,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:01,558 INFO L130 PetriNetUnfolder]: 864/6011 cut-off events. [2022-11-20 12:21:01,559 INFO L131 PetriNetUnfolder]: For 714/714 co-relation queries the response was YES. [2022-11-20 12:21:01,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8708 conditions, 6011 events. 864/6011 cut-off events. For 714/714 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 67801 event pairs, 104 based on Foata normal form. 0/5229 useless extension candidates. Maximal degree in co-relation 8686. Up to 1354 conditions per place. [2022-11-20 12:21:01,601 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 41 selfloop transitions, 5 changer transitions 0/312 dead transitions. [2022-11-20 12:21:01,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 312 transitions, 884 flow [2022-11-20 12:21:01,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:21:01,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:21:01,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1709 transitions. [2022-11-20 12:21:01,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8579317269076305 [2022-11-20 12:21:01,606 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1709 transitions. [2022-11-20 12:21:01,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1709 transitions. [2022-11-20 12:21:01,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:01,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1709 transitions. [2022-11-20 12:21:01,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.8333333333333) internal successors, (1709), 6 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states 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 12:21:01,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 12:21:01,615 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 12:21:01,615 INFO L175 Difference]: Start difference. First operand has 333 places, 301 transitions, 764 flow. Second operand 6 states and 1709 transitions. [2022-11-20 12:21:01,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 312 transitions, 884 flow [2022-11-20 12:21:01,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 312 transitions, 871 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:21:01,627 INFO L231 Difference]: Finished difference. Result has 333 places, 300 transitions, 763 flow [2022-11-20 12:21:01,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=763, PETRI_PLACES=333, PETRI_TRANSITIONS=300} [2022-11-20 12:21:01,628 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 36 predicate places. [2022-11-20 12:21:01,628 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 300 transitions, 763 flow [2022-11-20 12:21:01,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states 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 12:21:01,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:01,629 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:01,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:21:01,630 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:01,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:01,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1174790223, now seen corresponding path program 1 times [2022-11-20 12:21:01,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:01,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396130891] [2022-11-20 12:21:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:01,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:01,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:01,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396130891] [2022-11-20 12:21:01,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396130891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:01,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:01,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:21:01,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021736104] [2022-11-20 12:21:01,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:01,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:21:01,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:21:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:21:01,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 332 [2022-11-20 12:21:01,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 300 transitions, 763 flow. Second operand has 8 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states 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 12:21:01,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:01,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 332 [2022-11-20 12:21:01,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:02,900 INFO L130 PetriNetUnfolder]: 687/5049 cut-off events. [2022-11-20 12:21:02,900 INFO L131 PetriNetUnfolder]: For 514/514 co-relation queries the response was YES. [2022-11-20 12:21:02,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7648 conditions, 5049 events. 687/5049 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 53204 event pairs, 70 based on Foata normal form. 0/4675 useless extension candidates. Maximal degree in co-relation 7626. Up to 710 conditions per place. [2022-11-20 12:21:02,938 INFO L137 encePairwiseOnDemand]: 322/332 looper letters, 60 selfloop transitions, 9 changer transitions 0/329 dead transitions. [2022-11-20 12:21:02,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 329 transitions, 979 flow [2022-11-20 12:21:02,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:21:02,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:21:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2245 transitions. [2022-11-20 12:21:02,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8452560240963856 [2022-11-20 12:21:02,943 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2245 transitions. [2022-11-20 12:21:02,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2245 transitions. [2022-11-20 12:21:02,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:02,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2245 transitions. [2022-11-20 12:21:02,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.625) internal successors, (2245), 8 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states 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 12:21:02,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 12:21:02,952 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 12:21:02,952 INFO L175 Difference]: Start difference. First operand has 333 places, 300 transitions, 763 flow. Second operand 8 states and 2245 transitions. [2022-11-20 12:21:02,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 329 transitions, 979 flow [2022-11-20 12:21:02,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 329 transitions, 962 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:21:02,964 INFO L231 Difference]: Finished difference. Result has 338 places, 301 transitions, 784 flow [2022-11-20 12:21:02,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=338, PETRI_TRANSITIONS=301} [2022-11-20 12:21:02,965 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 41 predicate places. [2022-11-20 12:21:02,965 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 301 transitions, 784 flow [2022-11-20 12:21:02,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states 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 12:21:02,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:02,966 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:02,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:21:02,967 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:02,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:02,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2097273297, now seen corresponding path program 1 times [2022-11-20 12:21:02,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:02,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37601063] [2022-11-20 12:21:02,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:02,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:03,057 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:03,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:03,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37601063] [2022-11-20 12:21:03,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37601063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:03,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:03,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:21:03,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475424510] [2022-11-20 12:21:03,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:03,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:21:03,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:03,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:21:03,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:21:03,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-20 12:21:03,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 301 transitions, 784 flow. Second operand has 4 states, 4 states have (on average 290.75) internal successors, (1163), 4 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states 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 12:21:03,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:03,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-20 12:21:03,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:03,807 INFO L130 PetriNetUnfolder]: 578/2900 cut-off events. [2022-11-20 12:21:03,807 INFO L131 PetriNetUnfolder]: For 641/649 co-relation queries the response was YES. [2022-11-20 12:21:03,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 2900 events. 578/2900 cut-off events. For 641/649 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 32712 event pairs, 288 based on Foata normal form. 18/2160 useless extension candidates. Maximal degree in co-relation 4450. Up to 623 conditions per place. [2022-11-20 12:21:03,833 INFO L137 encePairwiseOnDemand]: 328/332 looper letters, 28 selfloop transitions, 3 changer transitions 0/309 dead transitions. [2022-11-20 12:21:03,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 309 transitions, 862 flow [2022-11-20 12:21:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:21:03,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:21:03,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1184 transitions. [2022-11-20 12:21:03,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891566265060241 [2022-11-20 12:21:03,836 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1184 transitions. [2022-11-20 12:21:03,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1184 transitions. [2022-11-20 12:21:03,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:03,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1184 transitions. [2022-11-20 12:21:03,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states 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 12:21:03,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:21:03,841 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:21:03,842 INFO L175 Difference]: Start difference. First operand has 338 places, 301 transitions, 784 flow. Second operand 4 states and 1184 transitions. [2022-11-20 12:21:03,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 309 transitions, 862 flow [2022-11-20 12:21:03,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 309 transitions, 851 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:21:03,849 INFO L231 Difference]: Finished difference. Result has 336 places, 301 transitions, 782 flow [2022-11-20 12:21:03,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=336, PETRI_TRANSITIONS=301} [2022-11-20 12:21:03,850 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 39 predicate places. [2022-11-20 12:21:03,850 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 301 transitions, 782 flow [2022-11-20 12:21:03,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.75) internal successors, (1163), 4 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states 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 12:21:03,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:03,851 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:03,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:21:03,852 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:03,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:03,852 INFO L85 PathProgramCache]: Analyzing trace with hash -419200924, now seen corresponding path program 1 times [2022-11-20 12:21:03,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:03,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678150883] [2022-11-20 12:21:03,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:03,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:03,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:03,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678150883] [2022-11-20 12:21:03,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678150883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:03,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304657434] [2022-11-20 12:21:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:03,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:03,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:03,996 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:04,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:21:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:04,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:21:04,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:04,227 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:04,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:21:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:04,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304657434] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:21:04,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:21:04,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:21:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497680100] [2022-11-20 12:21:04,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:21:04,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:21:04,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:04,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:21:04,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:21:04,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-20 12:21:04,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 301 transitions, 782 flow. Second operand has 12 states, 12 states have (on average 300.8333333333333) internal successors, (3610), 12 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states 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 12:21:04,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:04,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-20 12:21:04,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:05,134 INFO L130 PetriNetUnfolder]: 47/1901 cut-off events. [2022-11-20 12:21:05,135 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-11-20 12:21:05,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 1901 events. 47/1901 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 12486 event pairs, 6 based on Foata normal form. 6/1787 useless extension candidates. Maximal degree in co-relation 2635. Up to 51 conditions per place. [2022-11-20 12:21:05,169 INFO L137 encePairwiseOnDemand]: 323/332 looper letters, 50 selfloop transitions, 20 changer transitions 0/352 dead transitions. [2022-11-20 12:21:05,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 352 transitions, 1066 flow [2022-11-20 12:21:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:21:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:21:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5437 transitions. [2022-11-20 12:21:05,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.909805890227577 [2022-11-20 12:21:05,176 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5437 transitions. [2022-11-20 12:21:05,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5437 transitions. [2022-11-20 12:21:05,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:05,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5437 transitions. [2022-11-20 12:21:05,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 302.05555555555554) internal successors, (5437), 18 states have internal predecessors, (5437), 0 states have call successors, (0), 0 states 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 12:21:05,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states 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 12:21:05,196 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states 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 12:21:05,197 INFO L175 Difference]: Start difference. First operand has 336 places, 301 transitions, 782 flow. Second operand 18 states and 5437 transitions. [2022-11-20 12:21:05,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 352 transitions, 1066 flow [2022-11-20 12:21:05,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 352 transitions, 1064 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:21:05,206 INFO L231 Difference]: Finished difference. Result has 356 places, 313 transitions, 892 flow [2022-11-20 12:21:05,206 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=892, PETRI_PLACES=356, PETRI_TRANSITIONS=313} [2022-11-20 12:21:05,207 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 59 predicate places. [2022-11-20 12:21:05,207 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 313 transitions, 892 flow [2022-11-20 12:21:05,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 300.8333333333333) internal successors, (3610), 12 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states 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 12:21:05,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:05,209 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:05,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 12:21:05,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 12:21:05,414 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:05,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:05,414 INFO L85 PathProgramCache]: Analyzing trace with hash 375970165, now seen corresponding path program 1 times [2022-11-20 12:21:05,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:05,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179193329] [2022-11-20 12:21:05,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:05,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:05,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:05,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179193329] [2022-11-20 12:21:05,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179193329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:05,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:05,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:21:05,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996130655] [2022-11-20 12:21:05,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:05,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:21:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:21:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:21:05,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 332 [2022-11-20 12:21:05,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 313 transitions, 892 flow. Second operand has 6 states, 6 states have (on average 279.5) internal successors, (1677), 6 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states 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 12:21:05,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:05,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 332 [2022-11-20 12:21:05,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:06,409 INFO L130 PetriNetUnfolder]: 195/2130 cut-off events. [2022-11-20 12:21:06,409 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-11-20 12:21:06,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3513 conditions, 2130 events. 195/2130 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 15133 event pairs, 11 based on Foata normal form. 0/1990 useless extension candidates. Maximal degree in co-relation 3485. Up to 439 conditions per place. [2022-11-20 12:21:06,436 INFO L137 encePairwiseOnDemand]: 319/332 looper letters, 57 selfloop transitions, 13 changer transitions 0/337 dead transitions. [2022-11-20 12:21:06,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 337 transitions, 1089 flow [2022-11-20 12:21:06,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:21:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:21:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2549 transitions. [2022-11-20 12:21:06,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8530789825970548 [2022-11-20 12:21:06,441 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2549 transitions. [2022-11-20 12:21:06,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2549 transitions. [2022-11-20 12:21:06,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:06,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2549 transitions. [2022-11-20 12:21:06,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 283.22222222222223) internal successors, (2549), 9 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states 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 12:21:06,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states 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 12:21:06,454 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states 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 12:21:06,454 INFO L175 Difference]: Start difference. First operand has 356 places, 313 transitions, 892 flow. Second operand 9 states and 2549 transitions. [2022-11-20 12:21:06,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 337 transitions, 1089 flow [2022-11-20 12:21:06,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 337 transitions, 1045 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-11-20 12:21:06,466 INFO L231 Difference]: Finished difference. Result has 364 places, 319 transitions, 918 flow [2022-11-20 12:21:06,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=918, PETRI_PLACES=364, PETRI_TRANSITIONS=319} [2022-11-20 12:21:06,467 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 67 predicate places. [2022-11-20 12:21:06,467 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 319 transitions, 918 flow [2022-11-20 12:21:06,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.5) internal successors, (1677), 6 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states 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 12:21:06,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:06,468 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:06,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 12:21:06,469 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:06,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:06,469 INFO L85 PathProgramCache]: Analyzing trace with hash -110325907, now seen corresponding path program 1 times [2022-11-20 12:21:06,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:06,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638243570] [2022-11-20 12:21:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:06,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:06,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:06,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638243570] [2022-11-20 12:21:06,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638243570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:06,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033055289] [2022-11-20 12:21:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:06,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:06,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:06,619 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:06,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:21:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:06,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:21:06,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:06,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:06,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033055289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:06,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:21:06,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:21:06,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225935974] [2022-11-20 12:21:06,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:06,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:21:06,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:21:06,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:21:06,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-20 12:21:06,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 319 transitions, 918 flow. Second operand has 6 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states 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 12:21:06,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:06,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-20 12:21:06,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:07,525 INFO L130 PetriNetUnfolder]: 43/1680 cut-off events. [2022-11-20 12:21:07,525 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2022-11-20 12:21:07,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2549 conditions, 1680 events. 43/1680 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 10338 event pairs, 0 based on Foata normal form. 8/1648 useless extension candidates. Maximal degree in co-relation 2518. Up to 71 conditions per place. [2022-11-20 12:21:07,552 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 25 selfloop transitions, 13 changer transitions 0/325 dead transitions. [2022-11-20 12:21:07,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 325 transitions, 1003 flow [2022-11-20 12:21:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:21:07,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:21:07,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2116 transitions. [2022-11-20 12:21:07,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9104991394148021 [2022-11-20 12:21:07,556 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2116 transitions. [2022-11-20 12:21:07,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2116 transitions. [2022-11-20 12:21:07,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:07,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2116 transitions. [2022-11-20 12:21:07,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states 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 12:21:07,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 12:21:07,564 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 12:21:07,564 INFO L175 Difference]: Start difference. First operand has 364 places, 319 transitions, 918 flow. Second operand 7 states and 2116 transitions. [2022-11-20 12:21:07,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 325 transitions, 1003 flow [2022-11-20 12:21:07,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 325 transitions, 1003 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:21:07,575 INFO L231 Difference]: Finished difference. Result has 365 places, 315 transitions, 925 flow [2022-11-20 12:21:07,575 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=925, PETRI_PLACES=365, PETRI_TRANSITIONS=315} [2022-11-20 12:21:07,576 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 68 predicate places. [2022-11-20 12:21:07,576 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 315 transitions, 925 flow [2022-11-20 12:21:07,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states 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 12:21:07,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:07,577 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:07,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:07,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:07,783 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:07,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:07,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2059565393, now seen corresponding path program 1 times [2022-11-20 12:21:07,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:07,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826047092] [2022-11-20 12:21:07,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:07,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:07,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:07,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826047092] [2022-11-20 12:21:07,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826047092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:07,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:07,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:21:07,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550269115] [2022-11-20 12:21:07,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:07,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:21:07,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:07,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:21:07,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:21:07,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 332 [2022-11-20 12:21:07,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 315 transitions, 925 flow. Second operand has 8 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states 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 12:21:07,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:07,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 332 [2022-11-20 12:21:07,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:11,090 INFO L130 PetriNetUnfolder]: 2629/14411 cut-off events. [2022-11-20 12:21:11,091 INFO L131 PetriNetUnfolder]: For 2135/2135 co-relation queries the response was YES. [2022-11-20 12:21:11,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22811 conditions, 14411 events. 2629/14411 cut-off events. For 2135/2135 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 187807 event pairs, 214 based on Foata normal form. 0/12915 useless extension candidates. Maximal degree in co-relation 22779. Up to 2412 conditions per place. [2022-11-20 12:21:11,200 INFO L137 encePairwiseOnDemand]: 322/332 looper letters, 56 selfloop transitions, 9 changer transitions 0/341 dead transitions. [2022-11-20 12:21:11,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 341 transitions, 1111 flow [2022-11-20 12:21:11,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:21:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:21:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2242 transitions. [2022-11-20 12:21:11,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441265060240963 [2022-11-20 12:21:11,206 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2242 transitions. [2022-11-20 12:21:11,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2242 transitions. [2022-11-20 12:21:11,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:11,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2242 transitions. [2022-11-20 12:21:11,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.25) internal successors, (2242), 8 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states 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 12:21:11,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 12:21:11,218 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 12:21:11,218 INFO L175 Difference]: Start difference. First operand has 365 places, 315 transitions, 925 flow. Second operand 8 states and 2242 transitions. [2022-11-20 12:21:11,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 341 transitions, 1111 flow [2022-11-20 12:21:11,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 341 transitions, 1093 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:21:11,250 INFO L231 Difference]: Finished difference. Result has 369 places, 316 transitions, 937 flow [2022-11-20 12:21:11,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=937, PETRI_PLACES=369, PETRI_TRANSITIONS=316} [2022-11-20 12:21:11,251 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 72 predicate places. [2022-11-20 12:21:11,251 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 316 transitions, 937 flow [2022-11-20 12:21:11,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states 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 12:21:11,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:11,253 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:11,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 12:21:11,253 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:11,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash -577981281, now seen corresponding path program 1 times [2022-11-20 12:21:11,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:11,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436711813] [2022-11-20 12:21:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:11,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:11,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:11,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436711813] [2022-11-20 12:21:11,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436711813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:11,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:11,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:21:11,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613243293] [2022-11-20 12:21:11,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:11,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:21:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:11,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:21:11,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:21:11,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 332 [2022-11-20 12:21:11,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 316 transitions, 937 flow. Second operand has 8 states, 8 states have (on average 274.5) internal successors, (2196), 8 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 12:21:11,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:11,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 332 [2022-11-20 12:21:11,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:14,696 INFO L130 PetriNetUnfolder]: 2233/13879 cut-off events. [2022-11-20 12:21:14,696 INFO L131 PetriNetUnfolder]: For 2505/2505 co-relation queries the response was YES. [2022-11-20 12:21:14,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22399 conditions, 13879 events. 2233/13879 cut-off events. For 2505/2505 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 178754 event pairs, 214 based on Foata normal form. 0/12675 useless extension candidates. Maximal degree in co-relation 22365. Up to 2144 conditions per place. [2022-11-20 12:21:14,773 INFO L137 encePairwiseOnDemand]: 322/332 looper letters, 59 selfloop transitions, 9 changer transitions 0/344 dead transitions. [2022-11-20 12:21:14,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 344 transitions, 1140 flow [2022-11-20 12:21:14,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:21:14,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:21:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2244 transitions. [2022-11-20 12:21:14,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8448795180722891 [2022-11-20 12:21:14,776 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2244 transitions. [2022-11-20 12:21:14,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2244 transitions. [2022-11-20 12:21:14,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:14,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2244 transitions. [2022-11-20 12:21:14,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.5) internal successors, (2244), 8 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states 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 12:21:14,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 12:21:14,784 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 12:21:14,784 INFO L175 Difference]: Start difference. First operand has 369 places, 316 transitions, 937 flow. Second operand 8 states and 2244 transitions. [2022-11-20 12:21:14,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 344 transitions, 1140 flow [2022-11-20 12:21:14,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 344 transitions, 1131 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:21:14,829 INFO L231 Difference]: Finished difference. Result has 374 places, 317 transitions, 958 flow [2022-11-20 12:21:14,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=958, PETRI_PLACES=374, PETRI_TRANSITIONS=317} [2022-11-20 12:21:14,830 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 77 predicate places. [2022-11-20 12:21:14,830 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 317 transitions, 958 flow [2022-11-20 12:21:14,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.5) internal successors, (2196), 8 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 12:21:14,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:14,831 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:14,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 12:21:14,832 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:14,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:14,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1883545042, now seen corresponding path program 1 times [2022-11-20 12:21:14,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:14,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149731672] [2022-11-20 12:21:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:14,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:14,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:14,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149731672] [2022-11-20 12:21:14,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149731672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:14,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111227896] [2022-11-20 12:21:14,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:14,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:14,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:14,958 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:14,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:21:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:15,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:21:15,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:15,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:21:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:15,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111227896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:21:15,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:21:15,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:21:15,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763620127] [2022-11-20 12:21:15,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:21:15,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:21:15,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:15,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:21:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:21:15,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-20 12:21:15,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 317 transitions, 958 flow. Second operand has 12 states, 12 states have (on average 300.9166666666667) internal successors, (3611), 12 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states 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 12:21:15,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:15,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-20 12:21:15,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:19,285 INFO L130 PetriNetUnfolder]: 767/13985 cut-off events. [2022-11-20 12:21:19,285 INFO L131 PetriNetUnfolder]: For 2182/2199 co-relation queries the response was YES. [2022-11-20 12:21:19,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20103 conditions, 13985 events. 767/13985 cut-off events. For 2182/2199 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 186818 event pairs, 102 based on Foata normal form. 54/12731 useless extension candidates. Maximal degree in co-relation 20067. Up to 765 conditions per place. [2022-11-20 12:21:19,384 INFO L137 encePairwiseOnDemand]: 323/332 looper letters, 46 selfloop transitions, 20 changer transitions 0/364 dead transitions. [2022-11-20 12:21:19,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 364 transitions, 1222 flow [2022-11-20 12:21:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:21:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:21:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5433 transitions. [2022-11-20 12:21:19,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9091365461847389 [2022-11-20 12:21:19,391 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5433 transitions. [2022-11-20 12:21:19,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5433 transitions. [2022-11-20 12:21:19,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:19,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5433 transitions. [2022-11-20 12:21:19,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 301.8333333333333) internal successors, (5433), 18 states have internal predecessors, (5433), 0 states have call successors, (0), 0 states 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 12:21:19,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states 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 12:21:19,409 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states 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 12:21:19,409 INFO L175 Difference]: Start difference. First operand has 374 places, 317 transitions, 958 flow. Second operand 18 states and 5433 transitions. [2022-11-20 12:21:19,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 364 transitions, 1222 flow [2022-11-20 12:21:19,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 364 transitions, 1213 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:21:19,486 INFO L231 Difference]: Finished difference. Result has 391 places, 329 transitions, 1061 flow [2022-11-20 12:21:19,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1061, PETRI_PLACES=391, PETRI_TRANSITIONS=329} [2022-11-20 12:21:19,487 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 94 predicate places. [2022-11-20 12:21:19,488 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 329 transitions, 1061 flow [2022-11-20 12:21:19,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 300.9166666666667) internal successors, (3611), 12 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states 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 12:21:19,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:19,489 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:19,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 12:21:19,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 12:21:19,695 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:19,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:19,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1616251165, now seen corresponding path program 1 times [2022-11-20 12:21:19,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:19,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773114385] [2022-11-20 12:21:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:19,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:19,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:19,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773114385] [2022-11-20 12:21:19,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773114385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:19,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:19,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:21:19,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958427000] [2022-11-20 12:21:19,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:19,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:21:19,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:21:19,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:21:19,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 332 [2022-11-20 12:21:19,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 329 transitions, 1061 flow. Second operand has 6 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states 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 12:21:19,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:19,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 332 [2022-11-20 12:21:19,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:24,182 INFO L130 PetriNetUnfolder]: 3266/14718 cut-off events. [2022-11-20 12:21:24,182 INFO L131 PetriNetUnfolder]: For 4939/4956 co-relation queries the response was YES. [2022-11-20 12:21:24,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25788 conditions, 14718 events. 3266/14718 cut-off events. For 4939/4956 co-relation queries the response was YES. Maximal size of possible extension queue 2566. Compared 230403 event pairs, 187 based on Foata normal form. 0/11058 useless extension candidates. Maximal degree in co-relation 25749. Up to 4940 conditions per place. [2022-11-20 12:21:24,285 INFO L137 encePairwiseOnDemand]: 319/332 looper letters, 49 selfloop transitions, 13 changer transitions 6/351 dead transitions. [2022-11-20 12:21:24,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 351 transitions, 1248 flow [2022-11-20 12:21:24,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:21:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:21:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2547 transitions. [2022-11-20 12:21:24,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8524096385542169 [2022-11-20 12:21:24,289 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2547 transitions. [2022-11-20 12:21:24,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2547 transitions. [2022-11-20 12:21:24,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:24,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2547 transitions. [2022-11-20 12:21:24,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 283.0) internal successors, (2547), 9 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states 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 12:21:24,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states 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 12:21:24,297 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states 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 12:21:24,297 INFO L175 Difference]: Start difference. First operand has 391 places, 329 transitions, 1061 flow. Second operand 9 states and 2547 transitions. [2022-11-20 12:21:24,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 351 transitions, 1248 flow [2022-11-20 12:21:24,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 351 transitions, 1204 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-11-20 12:21:24,349 INFO L231 Difference]: Finished difference. Result has 399 places, 335 transitions, 1087 flow [2022-11-20 12:21:24,349 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1087, PETRI_PLACES=399, PETRI_TRANSITIONS=335} [2022-11-20 12:21:24,350 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 102 predicate places. [2022-11-20 12:21:24,350 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 335 transitions, 1087 flow [2022-11-20 12:21:24,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states 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 12:21:24,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:24,351 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:24,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 12:21:24,351 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:24,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:24,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1739644897, now seen corresponding path program 1 times [2022-11-20 12:21:24,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:24,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366970239] [2022-11-20 12:21:24,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:24,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:24,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:24,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366970239] [2022-11-20 12:21:24,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366970239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:24,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413303224] [2022-11-20 12:21:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:24,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:24,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:24,484 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:24,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:21:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:24,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:21:24,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:24,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:24,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413303224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:24,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:21:24,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:21:24,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281646729] [2022-11-20 12:21:24,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:24,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:21:24,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:24,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:21:24,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:21:24,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-20 12:21:24,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 335 transitions, 1087 flow. Second operand has 6 states, 6 states have (on average 300.8333333333333) internal successors, (1805), 6 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states 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 12:21:24,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:24,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-20 12:21:24,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:28,015 INFO L130 PetriNetUnfolder]: 699/11926 cut-off events. [2022-11-20 12:21:28,015 INFO L131 PetriNetUnfolder]: For 2234/2251 co-relation queries the response was YES. [2022-11-20 12:21:28,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18920 conditions, 11926 events. 699/11926 cut-off events. For 2234/2251 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 153299 event pairs, 51 based on Foata normal form. 72/11357 useless extension candidates. Maximal degree in co-relation 18878. Up to 697 conditions per place. [2022-11-20 12:21:28,093 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 24 selfloop transitions, 13 changer transitions 0/340 dead transitions. [2022-11-20 12:21:28,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 340 transitions, 1167 flow [2022-11-20 12:21:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:21:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:21:28,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2115 transitions. [2022-11-20 12:21:28,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9100688468158348 [2022-11-20 12:21:28,096 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2115 transitions. [2022-11-20 12:21:28,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2115 transitions. [2022-11-20 12:21:28,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:28,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2115 transitions. [2022-11-20 12:21:28,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 302.14285714285717) internal successors, (2115), 7 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states 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 12:21:28,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 12:21:28,103 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 12:21:28,103 INFO L175 Difference]: Start difference. First operand has 399 places, 335 transitions, 1087 flow. Second operand 7 states and 2115 transitions. [2022-11-20 12:21:28,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 340 transitions, 1167 flow [2022-11-20 12:21:28,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 340 transitions, 1167 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:21:28,147 INFO L231 Difference]: Finished difference. Result has 400 places, 331 transitions, 1094 flow [2022-11-20 12:21:28,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1094, PETRI_PLACES=400, PETRI_TRANSITIONS=331} [2022-11-20 12:21:28,148 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 103 predicate places. [2022-11-20 12:21:28,149 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 331 transitions, 1094 flow [2022-11-20 12:21:28,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.8333333333333) internal successors, (1805), 6 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states 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 12:21:28,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:28,149 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:28,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:28,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 12:21:28,356 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:28,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash 198236502, now seen corresponding path program 1 times [2022-11-20 12:21:28,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:28,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643151804] [2022-11-20 12:21:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:28,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:28,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:28,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643151804] [2022-11-20 12:21:28,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643151804] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:28,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989095145] [2022-11-20 12:21:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:28,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:28,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:28,551 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:28,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:21:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:28,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:21:28,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 12:21:28,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:28,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989095145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:28,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:21:28,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-20 12:21:28,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066054197] [2022-11-20 12:21:28,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:28,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:21:28,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:28,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:21:28,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:21:28,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 332 [2022-11-20 12:21:28,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 331 transitions, 1094 flow. Second operand has 6 states, 6 states have (on average 272.6666666666667) internal successors, (1636), 6 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states 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 12:21:28,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:28,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 332 [2022-11-20 12:21:28,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:30,410 INFO L130 PetriNetUnfolder]: 271/3373 cut-off events. [2022-11-20 12:21:30,410 INFO L131 PetriNetUnfolder]: For 501/501 co-relation queries the response was YES. [2022-11-20 12:21:30,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6007 conditions, 3373 events. 271/3373 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 28638 event pairs, 198 based on Foata normal form. 8/3355 useless extension candidates. Maximal degree in co-relation 5964. Up to 602 conditions per place. [2022-11-20 12:21:30,468 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 58 selfloop transitions, 6 changer transitions 0/345 dead transitions. [2022-11-20 12:21:30,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 345 transitions, 1261 flow [2022-11-20 12:21:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:21:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:21:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2203 transitions. [2022-11-20 12:21:30,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8294427710843374 [2022-11-20 12:21:30,471 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2203 transitions. [2022-11-20 12:21:30,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2203 transitions. [2022-11-20 12:21:30,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:30,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2203 transitions. [2022-11-20 12:21:30,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 275.375) internal successors, (2203), 8 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states 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 12:21:30,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 12:21:30,478 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 12:21:30,479 INFO L175 Difference]: Start difference. First operand has 400 places, 331 transitions, 1094 flow. Second operand 8 states and 2203 transitions. [2022-11-20 12:21:30,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 345 transitions, 1261 flow [2022-11-20 12:21:30,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 345 transitions, 1241 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:21:30,494 INFO L231 Difference]: Finished difference. Result has 403 places, 333 transitions, 1100 flow [2022-11-20 12:21:30,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1100, PETRI_PLACES=403, PETRI_TRANSITIONS=333} [2022-11-20 12:21:30,495 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 106 predicate places. [2022-11-20 12:21:30,495 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 333 transitions, 1100 flow [2022-11-20 12:21:30,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.6666666666667) internal successors, (1636), 6 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states 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 12:21:30,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:30,496 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:30,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:30,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 12:21:30,709 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:30,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:30,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1663034885, now seen corresponding path program 1 times [2022-11-20 12:21:30,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:30,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893189033] [2022-11-20 12:21:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:30,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:30,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:30,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893189033] [2022-11-20 12:21:30,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893189033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:30,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086516668] [2022-11-20 12:21:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:30,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:30,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:30,984 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:31,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:21:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:31,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:21:31,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 12:21:31,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:31,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086516668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:31,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:21:31,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-20 12:21:31,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206567990] [2022-11-20 12:21:31,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:31,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:21:31,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:31,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:21:31,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:21:31,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 332 [2022-11-20 12:21:31,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 333 transitions, 1100 flow. Second operand has 6 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states 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 12:21:31,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:31,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 332 [2022-11-20 12:21:31,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:33,048 INFO L130 PetriNetUnfolder]: 255/3349 cut-off events. [2022-11-20 12:21:33,048 INFO L131 PetriNetUnfolder]: For 563/563 co-relation queries the response was YES. [2022-11-20 12:21:33,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6018 conditions, 3349 events. 255/3349 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 28406 event pairs, 170 based on Foata normal form. 8/3331 useless extension candidates. Maximal degree in co-relation 5973. Up to 518 conditions per place. [2022-11-20 12:21:33,121 INFO L137 encePairwiseOnDemand]: 323/332 looper letters, 63 selfloop transitions, 8 changer transitions 0/352 dead transitions. [2022-11-20 12:21:33,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 352 transitions, 1307 flow [2022-11-20 12:21:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:21:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:21:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2475 transitions. [2022-11-20 12:21:33,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8283132530120482 [2022-11-20 12:21:33,125 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2475 transitions. [2022-11-20 12:21:33,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2475 transitions. [2022-11-20 12:21:33,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:33,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2475 transitions. [2022-11-20 12:21:33,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states 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 12:21:33,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states 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 12:21:33,131 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states 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 12:21:33,131 INFO L175 Difference]: Start difference. First operand has 403 places, 333 transitions, 1100 flow. Second operand 9 states and 2475 transitions. [2022-11-20 12:21:33,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 352 transitions, 1307 flow [2022-11-20 12:21:33,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 352 transitions, 1295 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-20 12:21:33,149 INFO L231 Difference]: Finished difference. Result has 412 places, 337 transitions, 1134 flow [2022-11-20 12:21:33,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1134, PETRI_PLACES=412, PETRI_TRANSITIONS=337} [2022-11-20 12:21:33,151 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 115 predicate places. [2022-11-20 12:21:33,151 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 337 transitions, 1134 flow [2022-11-20 12:21:33,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states 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 12:21:33,151 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:33,152 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:33,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:33,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:33,357 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash -368809020, now seen corresponding path program 1 times [2022-11-20 12:21:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:33,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497751438] [2022-11-20 12:21:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:33,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:33,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497751438] [2022-11-20 12:21:33,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497751438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:33,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121472030] [2022-11-20 12:21:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:33,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:33,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:33,661 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:33,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:21:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:33,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:21:33,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 12:21:33,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:33,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121472030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:33,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:21:33,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-20 12:21:33,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550902915] [2022-11-20 12:21:33,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:33,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:21:33,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:33,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:21:33,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:21:33,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 332 [2022-11-20 12:21:33,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 337 transitions, 1134 flow. Second operand has 6 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states 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 12:21:33,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:33,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 332 [2022-11-20 12:21:33,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:38,994 INFO L130 PetriNetUnfolder]: 4541/15637 cut-off events. [2022-11-20 12:21:38,994 INFO L131 PetriNetUnfolder]: For 6643/6677 co-relation queries the response was YES. [2022-11-20 12:21:39,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30568 conditions, 15637 events. 4541/15637 cut-off events. For 6643/6677 co-relation queries the response was YES. Maximal size of possible extension queue 3831. Compared 263025 event pairs, 3366 based on Foata normal form. 89/11466 useless extension candidates. Maximal degree in co-relation 30519. Up to 6950 conditions per place. [2022-11-20 12:21:39,135 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 51 selfloop transitions, 6 changer transitions 5/349 dead transitions. [2022-11-20 12:21:39,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 349 transitions, 1291 flow [2022-11-20 12:21:39,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:21:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:21:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2201 transitions. [2022-11-20 12:21:39,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8286897590361446 [2022-11-20 12:21:39,137 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2201 transitions. [2022-11-20 12:21:39,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2201 transitions. [2022-11-20 12:21:39,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:39,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2201 transitions. [2022-11-20 12:21:39,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 275.125) internal successors, (2201), 8 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states 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 12:21:39,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 12:21:39,144 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 12:21:39,145 INFO L175 Difference]: Start difference. First operand has 412 places, 337 transitions, 1134 flow. Second operand 8 states and 2201 transitions. [2022-11-20 12:21:39,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 349 transitions, 1291 flow [2022-11-20 12:21:39,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 349 transitions, 1279 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-20 12:21:39,211 INFO L231 Difference]: Finished difference. Result has 418 places, 339 transitions, 1148 flow [2022-11-20 12:21:39,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1148, PETRI_PLACES=418, PETRI_TRANSITIONS=339} [2022-11-20 12:21:39,212 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 121 predicate places. [2022-11-20 12:21:39,212 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 339 transitions, 1148 flow [2022-11-20 12:21:39,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states 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 12:21:39,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:39,213 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:39,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:39,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-20 12:21:39,419 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:39,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:39,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1264492983, now seen corresponding path program 1 times [2022-11-20 12:21:39,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:39,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928174548] [2022-11-20 12:21:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:39,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:39,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:39,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928174548] [2022-11-20 12:21:39,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928174548] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:39,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53344848] [2022-11-20 12:21:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:39,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:39,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:39,634 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:39,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:21:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:39,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:21:39,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 12:21:39,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:39,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53344848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:39,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:21:39,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-20 12:21:39,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820888437] [2022-11-20 12:21:39,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:39,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:21:39,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:39,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:21:39,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:21:39,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 332 [2022-11-20 12:21:39,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 339 transitions, 1148 flow. Second operand has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states 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 12:21:39,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:39,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 332 [2022-11-20 12:21:39,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:45,544 INFO L130 PetriNetUnfolder]: 4269/15293 cut-off events. [2022-11-20 12:21:45,544 INFO L131 PetriNetUnfolder]: For 7195/7229 co-relation queries the response was YES. [2022-11-20 12:21:45,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30726 conditions, 15293 events. 4269/15293 cut-off events. For 7195/7229 co-relation queries the response was YES. Maximal size of possible extension queue 3571. Compared 254484 event pairs, 2890 based on Foata normal form. 89/11397 useless extension candidates. Maximal degree in co-relation 30675. Up to 5970 conditions per place. [2022-11-20 12:21:45,668 INFO L137 encePairwiseOnDemand]: 323/332 looper letters, 55 selfloop transitions, 8 changer transitions 7/357 dead transitions. [2022-11-20 12:21:45,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 357 transitions, 1350 flow [2022-11-20 12:21:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:21:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:21:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2474 transitions. [2022-11-20 12:21:45,671 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8279785809906292 [2022-11-20 12:21:45,671 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2474 transitions. [2022-11-20 12:21:45,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2474 transitions. [2022-11-20 12:21:45,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:45,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2474 transitions. [2022-11-20 12:21:45,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 274.8888888888889) internal successors, (2474), 9 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states 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 12:21:45,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states 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 12:21:45,678 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states 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 12:21:45,679 INFO L175 Difference]: Start difference. First operand has 418 places, 339 transitions, 1148 flow. Second operand 9 states and 2474 transitions. [2022-11-20 12:21:45,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 357 transitions, 1350 flow [2022-11-20 12:21:45,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 357 transitions, 1338 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-20 12:21:45,751 INFO L231 Difference]: Finished difference. Result has 427 places, 343 transitions, 1182 flow [2022-11-20 12:21:45,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1182, PETRI_PLACES=427, PETRI_TRANSITIONS=343} [2022-11-20 12:21:45,752 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 130 predicate places. [2022-11-20 12:21:45,752 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 343 transitions, 1182 flow [2022-11-20 12:21:45,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states 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 12:21:45,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:45,753 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:45,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:45,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:45,959 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:45,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:45,959 INFO L85 PathProgramCache]: Analyzing trace with hash -313487225, now seen corresponding path program 2 times [2022-11-20 12:21:45,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:45,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343002449] [2022-11-20 12:21:45,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:45,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:46,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:46,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343002449] [2022-11-20 12:21:46,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343002449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:46,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447269445] [2022-11-20 12:21:46,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:21:46,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:46,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:46,238 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:46,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:21:46,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:21:46,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:21:46,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:21:46,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:46,462 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-20 12:21:46,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:46,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447269445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:46,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:21:46,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2022-11-20 12:21:46,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813211931] [2022-11-20 12:21:46,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:46,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:21:46,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:46,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:21:46,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:21:46,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 332 [2022-11-20 12:21:46,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 343 transitions, 1182 flow. Second operand has 6 states, 6 states have (on average 283.5) internal successors, (1701), 6 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states 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 12:21:46,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:46,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 332 [2022-11-20 12:21:46,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:47,745 INFO L130 PetriNetUnfolder]: 182/2094 cut-off events. [2022-11-20 12:21:47,745 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2022-11-20 12:21:47,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 2094 events. 182/2094 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 14907 event pairs, 100 based on Foata normal form. 2/2081 useless extension candidates. Maximal degree in co-relation 4022. Up to 320 conditions per place. [2022-11-20 12:21:47,800 INFO L137 encePairwiseOnDemand]: 317/332 looper letters, 44 selfloop transitions, 27 changer transitions 0/356 dead transitions. [2022-11-20 12:21:47,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 356 transitions, 1351 flow [2022-11-20 12:21:47,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:21:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:21:47,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2852 transitions. [2022-11-20 12:21:47,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8590361445783132 [2022-11-20 12:21:47,806 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2852 transitions. [2022-11-20 12:21:47,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2852 transitions. [2022-11-20 12:21:47,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:47,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2852 transitions. [2022-11-20 12:21:47,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 285.2) internal successors, (2852), 10 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states 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 12:21:47,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states 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 12:21:47,814 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states 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 12:21:47,814 INFO L175 Difference]: Start difference. First operand has 427 places, 343 transitions, 1182 flow. Second operand 10 states and 2852 transitions. [2022-11-20 12:21:47,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 356 transitions, 1351 flow [2022-11-20 12:21:47,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 356 transitions, 1333 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 12:21:47,828 INFO L231 Difference]: Finished difference. Result has 430 places, 345 transitions, 1218 flow [2022-11-20 12:21:47,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1218, PETRI_PLACES=430, PETRI_TRANSITIONS=345} [2022-11-20 12:21:47,830 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 133 predicate places. [2022-11-20 12:21:47,830 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 345 transitions, 1218 flow [2022-11-20 12:21:47,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 283.5) internal successors, (1701), 6 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states 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 12:21:47,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:21:47,831 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:47,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:48,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:48,038 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:21:48,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:48,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1245940981, now seen corresponding path program 2 times [2022-11-20 12:21:48,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:48,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499265069] [2022-11-20 12:21:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:48,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:21:48,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:48,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499265069] [2022-11-20 12:21:48,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499265069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:48,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170700090] [2022-11-20 12:21:48,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:21:48,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:48,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:48,312 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:48,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:21:48,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:21:48,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:21:48,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:21:48,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-20 12:21:48,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:48,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170700090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:48,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:21:48,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2022-11-20 12:21:48,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873118468] [2022-11-20 12:21:48,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:48,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:21:48,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:48,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:21:48,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:21:48,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 332 [2022-11-20 12:21:48,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 345 transitions, 1218 flow. Second operand has 6 states, 6 states have (on average 283.6666666666667) internal successors, (1702), 6 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states 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 12:21:48,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:21:48,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 332 [2022-11-20 12:21:48,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:21:53,082 INFO L130 PetriNetUnfolder]: 3062/14305 cut-off events. [2022-11-20 12:21:53,082 INFO L131 PetriNetUnfolder]: For 6029/6046 co-relation queries the response was YES. [2022-11-20 12:21:53,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27900 conditions, 14305 events. 3062/14305 cut-off events. For 6029/6046 co-relation queries the response was YES. Maximal size of possible extension queue 2437. Compared 221220 event pairs, 221 based on Foata normal form. 18/11484 useless extension candidates. Maximal degree in co-relation 27848. Up to 3521 conditions per place. [2022-11-20 12:21:53,185 INFO L137 encePairwiseOnDemand]: 317/332 looper letters, 0 selfloop transitions, 0 changer transitions 357/357 dead transitions. [2022-11-20 12:21:53,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 357 transitions, 1382 flow [2022-11-20 12:21:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:21:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:21:53,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2851 transitions. [2022-11-20 12:21:53,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8587349397590361 [2022-11-20 12:21:53,188 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2851 transitions. [2022-11-20 12:21:53,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2851 transitions. [2022-11-20 12:21:53,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:21:53,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2851 transitions. [2022-11-20 12:21:53,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 285.1) internal successors, (2851), 10 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states 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 12:21:53,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states 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 12:21:53,193 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states 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 12:21:53,193 INFO L175 Difference]: Start difference. First operand has 430 places, 345 transitions, 1218 flow. Second operand 10 states and 2851 transitions. [2022-11-20 12:21:53,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 357 transitions, 1382 flow [2022-11-20 12:21:53,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 357 transitions, 1347 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:21:53,264 INFO L231 Difference]: Finished difference. Result has 431 places, 0 transitions, 0 flow [2022-11-20 12:21:53,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=431, PETRI_TRANSITIONS=0} [2022-11-20 12:21:53,265 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 134 predicate places. [2022-11-20 12:21:53,265 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 0 transitions, 0 flow [2022-11-20 12:21:53,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 283.6666666666667) internal successors, (1702), 6 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states 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 12:21:53,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2022-11-20 12:21:53,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2022-11-20 12:21:53,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2022-11-20 12:21:53,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2022-11-20 12:21:53,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2022-11-20 12:21:53,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2022-11-20 12:21:53,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2022-11-20 12:21:53,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2022-11-20 12:21:53,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2022-11-20 12:21:53,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2022-11-20 12:21:53,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2022-11-20 12:21:53,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2022-11-20 12:21:53,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2022-11-20 12:21:53,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2022-11-20 12:21:53,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2022-11-20 12:21:53,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2022-11-20 12:21:53,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2022-11-20 12:21:53,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2022-11-20 12:21:53,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2022-11-20 12:21:53,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2022-11-20 12:21:53,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2022-11-20 12:21:53,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2022-11-20 12:21:53,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2022-11-20 12:21:53,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2022-11-20 12:21:53,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2022-11-20 12:21:53,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2022-11-20 12:21:53,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2022-11-20 12:21:53,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2022-11-20 12:21:53,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2022-11-20 12:21:53,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2022-11-20 12:21:53,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2022-11-20 12:21:53,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2022-11-20 12:21:53,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2022-11-20 12:21:53,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2022-11-20 12:21:53,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2022-11-20 12:21:53,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2022-11-20 12:21:53,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2022-11-20 12:21:53,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2022-11-20 12:21:53,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:53,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-20 12:21:53,481 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:53,487 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:21:53,491 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:21:53,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:21:53 BasicIcfg [2022-11-20 12:21:53,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:21:53,501 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:21:53,501 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:21:53,501 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:21:53,501 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:20:43" (3/4) ... [2022-11-20 12:21:53,505 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:21:53,511 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 12:21:53,511 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 12:21:53,515 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 12:21:53,516 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 12:21:53,516 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:21:53,516 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:21:53,573 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:21:53,573 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:21:53,574 INFO L158 Benchmark]: Toolchain (without parser) took 71535.73ms. Allocated memory was 142.6MB in the beginning and 12.8GB in the end (delta: 12.6GB). Free memory was 90.7MB in the beginning and 10.6GB in the end (delta: -10.5GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2022-11-20 12:21:53,575 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:21:53,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.44ms. Allocated memory is still 142.6MB. Free memory was 90.5MB in the beginning and 78.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 12:21:53,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.42ms. Allocated memory is still 142.6MB. Free memory was 78.3MB in the beginning and 75.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:21:53,581 INFO L158 Benchmark]: Boogie Preprocessor took 88.03ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 75.8MB in the beginning and 162.6MB in the end (delta: -86.8MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2022-11-20 12:21:53,582 INFO L158 Benchmark]: RCFGBuilder took 826.85ms. Allocated memory is still 192.9MB. Free memory was 162.6MB in the beginning and 137.9MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 12:21:53,582 INFO L158 Benchmark]: TraceAbstraction took 70213.06ms. Allocated memory was 192.9MB in the beginning and 12.8GB in the end (delta: 12.6GB). Free memory was 137.0MB in the beginning and 10.6GB in the end (delta: -10.4GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2022-11-20 12:21:53,583 INFO L158 Benchmark]: Witness Printer took 73.21ms. Allocated memory is still 12.8GB. Free memory was 10.6GB in the beginning and 10.6GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:21:53,585 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.44ms. Allocated memory is still 142.6MB. Free memory was 90.5MB in the beginning and 78.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.42ms. Allocated memory is still 142.6MB. Free memory was 78.3MB in the beginning and 75.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.03ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 75.8MB in the beginning and 162.6MB in the end (delta: -86.8MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * RCFGBuilder took 826.85ms. Allocated memory is still 192.9MB. Free memory was 162.6MB in the beginning and 137.9MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 70213.06ms. Allocated memory was 192.9MB in the beginning and 12.8GB in the end (delta: 12.6GB). Free memory was 137.0MB in the beginning and 10.6GB in the end (delta: -10.4GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. * Witness Printer took 73.21ms. Allocated memory is still 12.8GB. Free memory was 10.6GB in the beginning and 10.6GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: 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 5 procedures, 488 locations, 38 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: 69.9s, OverallIterations: 34, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 56.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1742 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1742 mSDsluCounter, 1135 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 691 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3258 IncrementalHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 444 mSDtfsCounter, 3258 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3164 GetRequests, 2823 SyntacticMatches, 3 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1218occurred in iteration=33, InterpolantAutomatonStates: 273, 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: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 7245 NumberOfCodeBlocks, 6995 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 7837 ConstructedInterpolants, 0 QuantifiedInterpolants, 14153 SizeOfPredicates, 47 NumberOfNonLiveVariables, 3869 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 53 InterpolantComputations, 29 PerfectInterpolantSequences, 1770/2373 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 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 12:21:53,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0e9524-bc3f-4679-a1bb-1e24befd7842/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE