./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R --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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- 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-38b53e6 [2022-11-25 17:52:38,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:52:38,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:52:38,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:52:38,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:52:38,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:52:38,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:52:38,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:52:38,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:52:38,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:52:38,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:52:38,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:52:38,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:52:38,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:52:38,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:52:38,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:52:38,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:52:38,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:52:38,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:52:38,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:52:38,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:52:38,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:52:38,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:52:38,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:52:38,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:52:38,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:52:38,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:52:38,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:52:38,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:52:38,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:52:38,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:52:38,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:52:38,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:52:38,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:52:38,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:52:38,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:52:38,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:52:38,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:52:38,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:52:38,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:52:38,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:52:38,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:52:38,542 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:52:38,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:52:38,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:52:38,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:52:38,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:52:38,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:52:38,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:52:38,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:52:38,549 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:52:38,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:52:38,550 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:52:38,551 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:52:38,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:52:38,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:52:38,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:52:38,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:52:38,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:52:38,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:52:38,552 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:52:38,553 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:52:38,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:52:38,553 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:52:38,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:52:38,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:52:38,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:52:38,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:52:38,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:52:38,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:52:38,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:52:38,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:52:38,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:52:38,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:52:38,556 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:52:38,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:52:38,557 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:52:38,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:52:38,557 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2022-11-25 17:52:38,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:52:38,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:52:38,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:52:38,893 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:52:38,893 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:52:38,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-11-25 17:52:42,197 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:52:42,573 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:52:42,574 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-11-25 17:52:42,608 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/data/234a1da24/e7b3263101e247bf8fd981212566ad99/FLAGec5c51e6a [2022-11-25 17:52:42,623 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/data/234a1da24/e7b3263101e247bf8fd981212566ad99 [2022-11-25 17:52:42,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:52:42,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:52:42,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:52:42,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:52:42,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:52:42,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:42" (1/1) ... [2022-11-25 17:52:42,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1cfb1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:42, skipping insertion in model container [2022-11-25 17:52:42,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:42" (1/1) ... [2022-11-25 17:52:42,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:52:42,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:52:43,258 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_cedb690e-f711-4246-af3b-ebf39021745f/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-11-25 17:52:43,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:52:43,341 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:52:43,404 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_cedb690e-f711-4246-af3b-ebf39021745f/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-11-25 17:52:43,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:52:43,528 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:52:43,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43 WrapperNode [2022-11-25 17:52:43,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:52:43,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:52:43,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:52:43,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:52:43,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43" (1/1) ... [2022-11-25 17:52:43,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43" (1/1) ... [2022-11-25 17:52:43,615 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 200 [2022-11-25 17:52:43,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:52:43,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:52:43,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:52:43,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:52:43,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43" (1/1) ... [2022-11-25 17:52:43,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43" (1/1) ... [2022-11-25 17:52:43,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43" (1/1) ... [2022-11-25 17:52:43,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43" (1/1) ... [2022-11-25 17:52:43,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43" (1/1) ... [2022-11-25 17:52:43,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43" (1/1) ... [2022-11-25 17:52:43,671 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43" (1/1) ... [2022-11-25 17:52:43,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43" (1/1) ... [2022-11-25 17:52:43,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:52:43,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:52:43,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:52:43,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:52:43,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43" (1/1) ... [2022-11-25 17:52:43,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:52:43,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:43,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:43,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:52:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:52:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:52:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:52:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:52:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:52:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:52:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 17:52:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 17:52:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:52:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:52:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:52:43,781 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:52:44,004 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:52:44,006 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:52:44,381 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:52:44,390 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:52:44,391 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-25 17:52:44,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:44 BoogieIcfgContainer [2022-11-25 17:52:44,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:52:44,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:52:44,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:52:44,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:52:44,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:52:42" (1/3) ... [2022-11-25 17:52:44,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d294fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:44, skipping insertion in model container [2022-11-25 17:52:44,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:43" (2/3) ... [2022-11-25 17:52:44,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d294fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:44, skipping insertion in model container [2022-11-25 17:52:44,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:44" (3/3) ... [2022-11-25 17:52:44,418 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2022-11-25 17:52:44,426 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:52:44,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:52:44,435 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-25 17:52:44,435 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:52:44,590 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 17:52:44,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 223 transitions, 454 flow [2022-11-25 17:52:44,832 INFO L130 PetriNetUnfolder]: 45/302 cut-off events. [2022-11-25 17:52:44,832 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-25 17:52:44,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 302 events. 45/302 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1036 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2022-11-25 17:52:44,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 223 transitions, 454 flow [2022-11-25 17:52:44,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 220 transitions, 448 flow [2022-11-25 17:52:44,870 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:52:44,908 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 220 transitions, 448 flow [2022-11-25 17:52:44,913 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 220 transitions, 448 flow [2022-11-25 17:52:44,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 220 transitions, 448 flow [2022-11-25 17:52:44,990 INFO L130 PetriNetUnfolder]: 44/299 cut-off events. [2022-11-25 17:52:44,990 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-25 17:52:44,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 299 events. 44/299 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1027 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2022-11-25 17:52:45,000 INFO L119 LiptonReduction]: Number of co-enabled transitions 13706 [2022-11-25 17:52:50,572 INFO L134 LiptonReduction]: Checked pairs total: 22834 [2022-11-25 17:52:50,572 INFO L136 LiptonReduction]: Total number of compositions: 215 [2022-11-25 17:52:50,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:52:50,610 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;@54ff6801, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:52:50,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-25 17:52:50,614 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:52:50,614 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:52:50,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:52:50,616 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:52:50,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:52:50,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:50,623 INFO L85 PathProgramCache]: Analyzing trace with hash 28481, now seen corresponding path program 1 times [2022-11-25 17:52:50,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:50,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547155382] [2022-11-25 17:52:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:50,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:50,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:50,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547155382] [2022-11-25 17:52:50,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547155382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:52:50,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:52:50,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:52:50,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620356899] [2022-11-25 17:52:51,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:52:51,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:52:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:51,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:52:51,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:52:51,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 438 [2022-11-25 17:52:51,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 80 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:51,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:52:51,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 438 [2022-11-25 17:52:51,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:52:51,423 INFO L130 PetriNetUnfolder]: 438/968 cut-off events. [2022-11-25 17:52:51,423 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:52:51,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1838 conditions, 968 events. 438/968 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5409 event pairs, 396 based on Foata normal form. 152/854 useless extension candidates. Maximal degree in co-relation 1770. Up to 863 conditions per place. [2022-11-25 17:52:51,434 INFO L137 encePairwiseOnDemand]: 411/438 looper letters, 47 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2022-11-25 17:52:51,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 222 flow [2022-11-25 17:52:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:52:51,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:52:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2022-11-25 17:52:51,458 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4863013698630137 [2022-11-25 17:52:51,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2022-11-25 17:52:51,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2022-11-25 17:52:51,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:52:51,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2022-11-25 17:52:51,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:51,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:51,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:51,492 INFO L175 Difference]: Start difference. First operand has 59 places, 80 transitions, 168 flow. Second operand 3 states and 639 transitions. [2022-11-25 17:52:51,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 222 flow [2022-11-25 17:52:51,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:52:51,499 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 136 flow [2022-11-25 17:52:51,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2022-11-25 17:52:51,505 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 1 predicate places. [2022-11-25 17:52:51,505 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 136 flow [2022-11-25 17:52:51,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:51,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:52:51,506 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:52:51,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:52:51,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:52:51,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:51,508 INFO L85 PathProgramCache]: Analyzing trace with hash 884918, now seen corresponding path program 1 times [2022-11-25 17:52:51,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:51,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173549007] [2022-11-25 17:52:51,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:51,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:51,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:51,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173549007] [2022-11-25 17:52:51,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173549007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:52:51,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:52:51,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:52:51,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154683256] [2022-11-25 17:52:51,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:52:51,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:52:51,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:51,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:52:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:52:51,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 438 [2022-11-25 17:52:51,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:51,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:52:51,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 438 [2022-11-25 17:52:51,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:52:51,847 INFO L130 PetriNetUnfolder]: 438/967 cut-off events. [2022-11-25 17:52:51,847 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:52:51,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1843 conditions, 967 events. 438/967 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5397 event pairs, 396 based on Foata normal form. 0/702 useless extension candidates. Maximal degree in co-relation 1831. Up to 862 conditions per place. [2022-11-25 17:52:51,854 INFO L137 encePairwiseOnDemand]: 436/438 looper letters, 47 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2022-11-25 17:52:51,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 228 flow [2022-11-25 17:52:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:52:51,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:52:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2022-11-25 17:52:51,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2022-11-25 17:52:51,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2022-11-25 17:52:51,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2022-11-25 17:52:51,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:52:51,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2022-11-25 17:52:51,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:51,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:51,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:51,865 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 136 flow. Second operand 3 states and 612 transitions. [2022-11-25 17:52:51,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 228 flow [2022-11-25 17:52:51,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 224 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:52:51,868 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 130 flow [2022-11-25 17:52:51,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2022-11-25 17:52:51,870 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 1 predicate places. [2022-11-25 17:52:51,870 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 130 flow [2022-11-25 17:52:51,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:51,871 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:52:51,871 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:52:51,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:52:51,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:52:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 595084866, now seen corresponding path program 1 times [2022-11-25 17:52:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:51,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120291993] [2022-11-25 17:52:51,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:51,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:51,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:51,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120291993] [2022-11-25 17:52:51,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120291993] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:52:51,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004887918] [2022-11-25 17:52:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:51,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:51,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:51,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:51,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:52:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:52,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:52:52,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:52,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:52:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:52,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004887918] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:52:52,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:52:52,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:52:52,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737541026] [2022-11-25 17:52:52,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:52:52,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:52:52,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:52,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:52:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:52:52,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 438 [2022-11-25 17:52:52,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:52,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:52:52,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 438 [2022-11-25 17:52:52,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:52:52,526 INFO L130 PetriNetUnfolder]: 438/970 cut-off events. [2022-11-25 17:52:52,526 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:52:52,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 970 events. 438/970 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5384 event pairs, 396 based on Foata normal form. 0/705 useless extension candidates. Maximal degree in co-relation 1842. Up to 862 conditions per place. [2022-11-25 17:52:52,534 INFO L137 encePairwiseOnDemand]: 435/438 looper letters, 46 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2022-11-25 17:52:52,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 244 flow [2022-11-25 17:52:52,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:52:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:52:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1176 transitions. [2022-11-25 17:52:52,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2022-11-25 17:52:52,539 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1176 transitions. [2022-11-25 17:52:52,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1176 transitions. [2022-11-25 17:52:52,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:52:52,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1176 transitions. [2022-11-25 17:52:52,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:52,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:52,552 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:52,552 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 130 flow. Second operand 6 states and 1176 transitions. [2022-11-25 17:52:52,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 244 flow [2022-11-25 17:52:52,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:52:52,557 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 165 flow [2022-11-25 17:52:52,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2022-11-25 17:52:52,559 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2022-11-25 17:52:52,560 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 165 flow [2022-11-25 17:52:52,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:52,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:52:52,562 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2022-11-25 17:52:52,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:52,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:52,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:52:52,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:52,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1902671209, now seen corresponding path program 2 times [2022-11-25 17:52:52,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:52,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974559920] [2022-11-25 17:52:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:52,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:52,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:52:52,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:52,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974559920] [2022-11-25 17:52:52,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974559920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:52:52,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:52:52,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:52:52,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569640246] [2022-11-25 17:52:52,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:52:52,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:52:52,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:52,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:52:52,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:52:52,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 438 [2022-11-25 17:52:52,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:52,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:52:52,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 438 [2022-11-25 17:52:52,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:52:53,190 INFO L130 PetriNetUnfolder]: 401/883 cut-off events. [2022-11-25 17:52:53,190 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:52:53,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 883 events. 401/883 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4870 event pairs, 228 based on Foata normal form. 0/679 useless extension candidates. Maximal degree in co-relation 1697. Up to 770 conditions per place. [2022-11-25 17:52:53,196 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 66 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2022-11-25 17:52:53,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 335 flow [2022-11-25 17:52:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:52:53,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:52:53,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2022-11-25 17:52:53,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4802130898021309 [2022-11-25 17:52:53,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 631 transitions. [2022-11-25 17:52:53,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 631 transitions. [2022-11-25 17:52:53,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:52:53,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 631 transitions. [2022-11-25 17:52:53,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:53,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:53,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:53,207 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 165 flow. Second operand 3 states and 631 transitions. [2022-11-25 17:52:53,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 335 flow [2022-11-25 17:52:53,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 77 transitions, 321 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:52:53,210 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 155 flow [2022-11-25 17:52:53,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2022-11-25 17:52:53,212 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2022-11-25 17:52:53,212 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 155 flow [2022-11-25 17:52:53,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:53,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:52:53,213 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-25 17:52:53,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:52:53,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:52:53,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:53,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1189103574, now seen corresponding path program 1 times [2022-11-25 17:52:53,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:53,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386785359] [2022-11-25 17:52:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:53,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:52:53,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:53,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386785359] [2022-11-25 17:52:53,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386785359] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:52:53,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824206515] [2022-11-25 17:52:53,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:53,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:53,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:53,314 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:53,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:52:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:53,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:52:53,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:52:53,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:52:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:52:53,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824206515] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:52:53,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:52:53,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 17:52:53,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291735894] [2022-11-25 17:52:53,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:52:53,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:52:53,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:53,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:52:53,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:52:53,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 438 [2022-11-25 17:52:53,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 155 flow. Second operand has 13 states, 13 states have (on average 188.30769230769232) internal successors, (2448), 13 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:53,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:52:53,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 438 [2022-11-25 17:52:53,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:52:53,796 INFO L130 PetriNetUnfolder]: 401/881 cut-off events. [2022-11-25 17:52:53,796 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-11-25 17:52:53,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 881 events. 401/881 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4734 event pairs, 360 based on Foata normal form. 6/699 useless extension candidates. Maximal degree in co-relation 1753. Up to 780 conditions per place. [2022-11-25 17:52:53,802 INFO L137 encePairwiseOnDemand]: 435/438 looper letters, 44 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2022-11-25 17:52:53,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 301 flow [2022-11-25 17:52:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:52:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:52:53,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2305 transitions. [2022-11-25 17:52:53,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4385464231354642 [2022-11-25 17:52:53,810 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2305 transitions. [2022-11-25 17:52:53,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2305 transitions. [2022-11-25 17:52:53,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:52:53,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2305 transitions. [2022-11-25 17:52:53,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 192.08333333333334) internal successors, (2305), 12 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:53,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 438.0) internal successors, (5694), 13 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:53,832 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 438.0) internal successors, (5694), 13 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:53,832 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 155 flow. Second operand 12 states and 2305 transitions. [2022-11-25 17:52:53,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 301 flow [2022-11-25 17:52:53,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 64 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:52:53,836 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 235 flow [2022-11-25 17:52:53,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=235, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2022-11-25 17:52:53,837 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 23 predicate places. [2022-11-25 17:52:53,837 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 235 flow [2022-11-25 17:52:53,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 188.30769230769232) internal successors, (2448), 13 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:53,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:52:53,839 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-25 17:52:53,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:54,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:54,046 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:52:54,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash -703885322, now seen corresponding path program 2 times [2022-11-25 17:52:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:54,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357160633] [2022-11-25 17:52:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:54,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:54,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:54,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:54,177 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:52:54,178 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-25 17:52:54,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-25 17:52:54,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-25 17:52:54,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-25 17:52:54,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-25 17:52:54,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-25 17:52:54,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-25 17:52:54,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-25 17:52:54,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-25 17:52:54,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-25 17:52:54,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-11-25 17:52:54,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-25 17:52:54,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-25 17:52:54,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-25 17:52:54,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-25 17:52:54,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-25 17:52:54,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-25 17:52:54,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-25 17:52:54,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-25 17:52:54,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:52:54,193 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-11-25 17:52:54,198 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:52:54,198 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 17:52:54,269 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:52:54,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 302 transitions, 622 flow [2022-11-25 17:52:54,366 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2022-11-25 17:52:54,367 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-25 17:52:54,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2066 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2022-11-25 17:52:54,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 302 transitions, 622 flow [2022-11-25 17:52:54,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 302 transitions, 622 flow [2022-11-25 17:52:54,379 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:52:54,380 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 262 places, 302 transitions, 622 flow [2022-11-25 17:52:54,380 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 262 places, 302 transitions, 622 flow [2022-11-25 17:52:54,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 302 transitions, 622 flow [2022-11-25 17:52:54,465 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2022-11-25 17:52:54,465 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-25 17:52:54,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2066 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2022-11-25 17:52:54,497 INFO L119 LiptonReduction]: Number of co-enabled transitions 42196 [2022-11-25 17:53:01,145 INFO L134 LiptonReduction]: Checked pairs total: 77702 [2022-11-25 17:53:01,146 INFO L136 LiptonReduction]: Total number of compositions: 296 [2022-11-25 17:53:01,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:53:01,149 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;@54ff6801, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:53:01,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-25 17:53:01,152 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:53:01,152 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:53:01,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:53:01,153 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:53:01,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:53:01,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:01,154 INFO L85 PathProgramCache]: Analyzing trace with hash 50119, now seen corresponding path program 1 times [2022-11-25 17:53:01,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:01,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963748630] [2022-11-25 17:53:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:01,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:53:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:53:01,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:53:01,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963748630] [2022-11-25 17:53:01,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963748630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:53:01,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:53:01,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:53:01,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676807390] [2022-11-25 17:53:01,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:53:01,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:53:01,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:01,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:53:01,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:53:01,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 598 [2022-11-25 17:53:01,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 114 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:01,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:53:01,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 598 [2022-11-25 17:53:01,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:53:05,027 INFO L130 PetriNetUnfolder]: 17588/27193 cut-off events. [2022-11-25 17:53:05,028 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2022-11-25 17:53:05,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53185 conditions, 27193 events. 17588/27193 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 199697 event pairs, 16582 based on Foata normal form. 4420/23304 useless extension candidates. Maximal degree in co-relation 24962. Up to 25876 conditions per place. [2022-11-25 17:53:05,221 INFO L137 encePairwiseOnDemand]: 563/598 looper letters, 69 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2022-11-25 17:53:05,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 328 flow [2022-11-25 17:53:05,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:53:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:53:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 861 transitions. [2022-11-25 17:53:05,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.479933110367893 [2022-11-25 17:53:05,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 861 transitions. [2022-11-25 17:53:05,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 861 transitions. [2022-11-25 17:53:05,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:53:05,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 861 transitions. [2022-11-25 17:53:05,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:05,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:05,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:05,247 INFO L175 Difference]: Start difference. First operand has 83 places, 114 transitions, 246 flow. Second operand 3 states and 861 transitions. [2022-11-25 17:53:05,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 328 flow [2022-11-25 17:53:05,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:53:05,271 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 198 flow [2022-11-25 17:53:05,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2022-11-25 17:53:05,272 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2022-11-25 17:53:05,272 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 198 flow [2022-11-25 17:53:05,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:05,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:53:05,273 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:53:05,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:53:05,274 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:53:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:05,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1556595, now seen corresponding path program 1 times [2022-11-25 17:53:05,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:05,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023215053] [2022-11-25 17:53:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:05,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:53:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:53:05,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:53:05,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023215053] [2022-11-25 17:53:05,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023215053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:53:05,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691218200] [2022-11-25 17:53:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:05,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:53:05,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:53:05,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:53:05,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:53:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:53:05,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:53:05,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:53:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:53:05,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:53:05,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691218200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:53:05,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:53:05,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 17:53:05,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126554070] [2022-11-25 17:53:05,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:53:05,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:53:05,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:05,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:53:05,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:53:05,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 598 [2022-11-25 17:53:05,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:05,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:53:05,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 598 [2022-11-25 17:53:05,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:53:08,960 INFO L130 PetriNetUnfolder]: 17588/27192 cut-off events. [2022-11-25 17:53:08,960 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2022-11-25 17:53:09,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53190 conditions, 27192 events. 17588/27192 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 199707 event pairs, 16582 based on Foata normal form. 0/18884 useless extension candidates. Maximal degree in co-relation 53177. Up to 25874 conditions per place. [2022-11-25 17:53:09,128 INFO L137 encePairwiseOnDemand]: 595/598 looper letters, 68 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2022-11-25 17:53:09,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 334 flow [2022-11-25 17:53:09,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:53:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:53:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1079 transitions. [2022-11-25 17:53:09,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45108695652173914 [2022-11-25 17:53:09,132 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1079 transitions. [2022-11-25 17:53:09,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1079 transitions. [2022-11-25 17:53:09,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:53:09,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1079 transitions. [2022-11-25 17:53:09,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.75) internal successors, (1079), 4 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:09,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 598.0) internal successors, (2990), 5 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:09,142 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 598.0) internal successors, (2990), 5 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:09,143 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 198 flow. Second operand 4 states and 1079 transitions. [2022-11-25 17:53:09,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 334 flow [2022-11-25 17:53:09,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 330 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:53:09,149 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 194 flow [2022-11-25 17:53:09,149 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2022-11-25 17:53:09,151 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2022-11-25 17:53:09,152 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 194 flow [2022-11-25 17:53:09,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:09,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:53:09,153 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:53:09,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:53:09,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 17:53:09,360 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:53:09,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:09,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1145155353, now seen corresponding path program 1 times [2022-11-25 17:53:09,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:09,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043694920] [2022-11-25 17:53:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:09,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:53:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:53:09,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:53:09,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043694920] [2022-11-25 17:53:09,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043694920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:53:09,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28306934] [2022-11-25 17:53:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:09,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:53:09,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:53:09,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:53:09,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:53:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:53:09,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:53:09,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:53:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:53:09,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:53:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:53:09,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28306934] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:53:09,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:53:09,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:53:09,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330655162] [2022-11-25 17:53:09,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:53:09,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:53:09,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:09,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:53:09,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:53:09,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 598 [2022-11-25 17:53:09,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 252.57142857142858) internal successors, (1768), 7 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:09,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:53:09,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 598 [2022-11-25 17:53:09,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:53:12,429 INFO L130 PetriNetUnfolder]: 17588/27195 cut-off events. [2022-11-25 17:53:12,429 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2022-11-25 17:53:12,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53199 conditions, 27195 events. 17588/27195 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 199790 event pairs, 16582 based on Foata normal form. 0/18887 useless extension candidates. Maximal degree in co-relation 53186. Up to 25875 conditions per place. [2022-11-25 17:53:12,587 INFO L137 encePairwiseOnDemand]: 595/598 looper letters, 68 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2022-11-25 17:53:12,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 352 flow [2022-11-25 17:53:12,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:53:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:53:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1582 transitions. [2022-11-25 17:53:12,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44091415830546266 [2022-11-25 17:53:12,595 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1582 transitions. [2022-11-25 17:53:12,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1582 transitions. [2022-11-25 17:53:12,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:53:12,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1582 transitions. [2022-11-25 17:53:12,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.6666666666667) internal successors, (1582), 6 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:12,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 598.0) internal successors, (4186), 7 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:12,609 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 598.0) internal successors, (4186), 7 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:12,609 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 194 flow. Second operand 6 states and 1582 transitions. [2022-11-25 17:53:12,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 352 flow [2022-11-25 17:53:12,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:53:12,613 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 227 flow [2022-11-25 17:53:12,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2022-11-25 17:53:12,616 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2022-11-25 17:53:12,617 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 227 flow [2022-11-25 17:53:12,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 252.57142857142858) internal successors, (1768), 7 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:12,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:53:12,618 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-25 17:53:12,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:53:12,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 17:53:12,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:53:12,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:12,826 INFO L85 PathProgramCache]: Analyzing trace with hash 392156475, now seen corresponding path program 2 times [2022-11-25 17:53:12,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:12,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114794836] [2022-11-25 17:53:12,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:12,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:53:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:53:12,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:53:12,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114794836] [2022-11-25 17:53:12,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114794836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:53:12,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:53:12,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:53:12,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817482489] [2022-11-25 17:53:12,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:53:12,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:53:12,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:12,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:53:12,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:53:12,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 598 [2022-11-25 17:53:12,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:12,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:53:12,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 598 [2022-11-25 17:53:12,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:53:15,613 INFO L130 PetriNetUnfolder]: 17708/27278 cut-off events. [2022-11-25 17:53:15,614 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-25 17:53:15,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53213 conditions, 27278 events. 17708/27278 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 1076. Compared 197958 event pairs, 13513 based on Foata normal form. 0/19042 useless extension candidates. Maximal degree in co-relation 53196. Up to 25772 conditions per place. [2022-11-25 17:53:15,777 INFO L137 encePairwiseOnDemand]: 593/598 looper letters, 90 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2022-11-25 17:53:15,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 105 transitions, 449 flow [2022-11-25 17:53:15,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:53:15,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:53:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2022-11-25 17:53:15,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4721293199554069 [2022-11-25 17:53:15,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 847 transitions. [2022-11-25 17:53:15,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 847 transitions. [2022-11-25 17:53:15,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:53:15,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 847 transitions. [2022-11-25 17:53:15,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:15,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:15,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:15,790 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 227 flow. Second operand 3 states and 847 transitions. [2022-11-25 17:53:15,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 105 transitions, 449 flow [2022-11-25 17:53:15,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 105 transitions, 435 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:53:15,795 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 229 flow [2022-11-25 17:53:15,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2022-11-25 17:53:15,796 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2022-11-25 17:53:15,797 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 229 flow [2022-11-25 17:53:15,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:15,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:53:15,798 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:53:15,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:53:15,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:53:15,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:15,799 INFO L85 PathProgramCache]: Analyzing trace with hash 874579508, now seen corresponding path program 1 times [2022-11-25 17:53:15,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:15,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893169767] [2022-11-25 17:53:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:15,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:53:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:53:15,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:53:15,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893169767] [2022-11-25 17:53:15,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893169767] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:53:15,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632807444] [2022-11-25 17:53:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:15,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:53:15,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:53:15,914 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:53:15,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:53:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:53:16,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:53:16,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:53:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:53:16,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:53:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:53:16,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632807444] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:53:16,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:53:16,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 17:53:16,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743806575] [2022-11-25 17:53:16,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:53:16,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:53:16,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:16,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:53:16,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:53:16,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 598 [2022-11-25 17:53:16,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 252.46153846153845) internal successors, (3282), 13 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:16,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:53:16,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 598 [2022-11-25 17:53:16,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:53:19,072 INFO L130 PetriNetUnfolder]: 17670/27242 cut-off events. [2022-11-25 17:53:19,072 INFO L131 PetriNetUnfolder]: For 945/945 co-relation queries the response was YES. [2022-11-25 17:53:19,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54681 conditions, 27242 events. 17670/27242 cut-off events. For 945/945 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 197820 event pairs, 16548 based on Foata normal form. 6/19343 useless extension candidates. Maximal degree in co-relation 54663. Up to 25788 conditions per place. [2022-11-25 17:53:19,254 INFO L137 encePairwiseOnDemand]: 595/598 looper letters, 69 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2022-11-25 17:53:19,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 425 flow [2022-11-25 17:53:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:53:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:53:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3097 transitions. [2022-11-25 17:53:19,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43157748049052397 [2022-11-25 17:53:19,266 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3097 transitions. [2022-11-25 17:53:19,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3097 transitions. [2022-11-25 17:53:19,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:53:19,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3097 transitions. [2022-11-25 17:53:19,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 258.0833333333333) internal successors, (3097), 12 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:19,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 598.0) internal successors, (7774), 13 states have internal predecessors, (7774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:19,297 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 598.0) internal successors, (7774), 13 states have internal predecessors, (7774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:19,298 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 229 flow. Second operand 12 states and 3097 transitions. [2022-11-25 17:53:19,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 425 flow [2022-11-25 17:53:19,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 93 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:53:19,302 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 311 flow [2022-11-25 17:53:19,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=311, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2022-11-25 17:53:19,304 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 27 predicate places. [2022-11-25 17:53:19,304 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 311 flow [2022-11-25 17:53:19,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 252.46153846153845) internal successors, (3282), 13 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:19,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:53:19,306 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:53:19,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 17:53:19,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cedb690e-f711-4246-af3b-ebf39021745f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:53:19,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:53:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash -720955980, now seen corresponding path program 2 times [2022-11-25 17:53:19,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:19,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042048308] [2022-11-25 17:53:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:19,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:53:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:53:20,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:53:20,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042048308] [2022-11-25 17:53:20,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042048308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:53:20,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:53:20,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:53:20,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897416590] [2022-11-25 17:53:20,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:53:20,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:53:20,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:20,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:53:20,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:53:20,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 598 [2022-11-25 17:53:20,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 242.28571428571428) internal successors, (1696), 7 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:20,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:53:20,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 598 [2022-11-25 17:53:20,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:53:23,396 INFO L130 PetriNetUnfolder]: 17031/26796 cut-off events. [2022-11-25 17:53:23,397 INFO L131 PetriNetUnfolder]: For 900/900 co-relation queries the response was YES. [2022-11-25 17:53:23,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54053 conditions, 26796 events. 17031/26796 cut-off events. For 900/900 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 199658 event pairs, 6828 based on Foata normal form. 0/19715 useless extension candidates. Maximal degree in co-relation 54027. Up to 22040 conditions per place. [2022-11-25 17:53:23,567 INFO L137 encePairwiseOnDemand]: 586/598 looper letters, 130 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2022-11-25 17:53:23,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 151 transitions, 724 flow [2022-11-25 17:53:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:53:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:53:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1100 transitions. [2022-11-25 17:53:23,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.459866220735786 [2022-11-25 17:53:23,574 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1100 transitions. [2022-11-25 17:53:23,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1100 transitions. [2022-11-25 17:53:23,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:53:23,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1100 transitions. [2022-11-25 17:53:23,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:23,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 598.0) internal successors, (2990), 5 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:23,851 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 598.0) internal successors, (2990), 5 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:23,852 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 311 flow. Second operand 4 states and 1100 transitions. [2022-11-25 17:53:23,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 151 transitions, 724 flow [2022-11-25 17:53:23,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 151 transitions, 676 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-25 17:53:23,860 INFO L231 Difference]: Finished difference. Result has 110 places, 99 transitions, 329 flow [2022-11-25 17:53:23,860 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2022-11-25 17:53:23,861 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 27 predicate places. [2022-11-25 17:53:23,861 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 329 flow [2022-11-25 17:53:23,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 242.28571428571428) internal successors, (1696), 7 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:23,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:53:23,863 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:53:23,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:53:23,863 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:53:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:23,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1912222383, now seen corresponding path program 1 times [2022-11-25 17:53:23,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:23,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817746198] [2022-11-25 17:53:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:23,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:53:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-25 17:53:23,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:53:23,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817746198] [2022-11-25 17:53:23,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817746198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:53:23,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:53:23,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:53:23,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591790674] [2022-11-25 17:53:23,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:53:23,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:53:23,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:23,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:53:23,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:53:23,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 598 [2022-11-25 17:53:23,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:23,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:53:23,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 598 [2022-11-25 17:53:23,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:53:27,406 INFO L130 PetriNetUnfolder]: 16332/26297 cut-off events. [2022-11-25 17:53:27,406 INFO L131 PetriNetUnfolder]: For 3099/3099 co-relation queries the response was YES. [2022-11-25 17:53:27,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57637 conditions, 26297 events. 16332/26297 cut-off events. For 3099/3099 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 203803 event pairs, 2795 based on Foata normal form. 0/21102 useless extension candidates. Maximal degree in co-relation 57610. Up to 22116 conditions per place. [2022-11-25 17:53:27,534 INFO L137 encePairwiseOnDemand]: 594/598 looper letters, 120 selfloop transitions, 4 changer transitions 0/137 dead transitions. [2022-11-25 17:53:27,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 137 transitions, 677 flow [2022-11-25 17:53:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:53:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:53:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 859 transitions. [2022-11-25 17:53:27,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47881828316610925 [2022-11-25 17:53:27,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 859 transitions. [2022-11-25 17:53:27,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 859 transitions. [2022-11-25 17:53:27,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:53:27,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 859 transitions. [2022-11-25 17:53:27,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:27,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:27,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:27,546 INFO L175 Difference]: Start difference. First operand has 110 places, 99 transitions, 329 flow. Second operand 3 states and 859 transitions. [2022-11-25 17:53:27,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 137 transitions, 677 flow [2022-11-25 17:53:27,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 137 transitions, 677 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:53:27,590 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 341 flow [2022-11-25 17:53:27,591 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2022-11-25 17:53:27,591 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 29 predicate places. [2022-11-25 17:53:27,592 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 341 flow [2022-11-25 17:53:27,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:27,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:53:27,592 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:53:27,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:53:27,593 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:53:27,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:27,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1912222442, now seen corresponding path program 1 times [2022-11-25 17:53:27,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:27,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622770258] [2022-11-25 17:53:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:27,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:53:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:53:27,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:53:27,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622770258] [2022-11-25 17:53:27,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622770258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:53:27,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:53:27,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:53:27,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199685569] [2022-11-25 17:53:27,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:53:27,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:53:27,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:27,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:53:27,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:53:27,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 598 [2022-11-25 17:53:27,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:27,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:53:27,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 598 [2022-11-25 17:53:27,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:53:30,633 INFO L130 PetriNetUnfolder]: 15707/24748 cut-off events. [2022-11-25 17:53:30,633 INFO L131 PetriNetUnfolder]: For 6515/6515 co-relation queries the response was YES. [2022-11-25 17:53:30,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55546 conditions, 24748 events. 15707/24748 cut-off events. For 6515/6515 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 181189 event pairs, 14303 based on Foata normal form. 340/20332 useless extension candidates. Maximal degree in co-relation 55518. Up to 23685 conditions per place. [2022-11-25 17:53:31,034 INFO L137 encePairwiseOnDemand]: 596/598 looper letters, 84 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2022-11-25 17:53:31,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 98 transitions, 507 flow [2022-11-25 17:53:31,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:53:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:53:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 824 transitions. [2022-11-25 17:53:31,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4593088071348941 [2022-11-25 17:53:31,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 824 transitions. [2022-11-25 17:53:31,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 824 transitions. [2022-11-25 17:53:31,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:53:31,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 824 transitions. [2022-11-25 17:53:31,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:31,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:31,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:31,045 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 341 flow. Second operand 3 states and 824 transitions. [2022-11-25 17:53:31,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 98 transitions, 507 flow [2022-11-25 17:53:31,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 98 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:53:31,066 INFO L231 Difference]: Finished difference. Result has 112 places, 98 transitions, 335 flow [2022-11-25 17:53:31,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=112, PETRI_TRANSITIONS=98} [2022-11-25 17:53:31,067 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 29 predicate places. [2022-11-25 17:53:31,067 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 98 transitions, 335 flow [2022-11-25 17:53:31,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:31,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:53:31,068 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 17:53:31,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:53:31,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:53:31,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash 600388415, now seen corresponding path program 1 times [2022-11-25 17:53:31,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:31,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998587530] [2022-11-25 17:53:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:31,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:53:31,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:53:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:53:31,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:53:31,159 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:53:31,160 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-11-25 17:53:31,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-25 17:53:31,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-25 17:53:31,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-25 17:53:31,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-25 17:53:31,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-25 17:53:31,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-25 17:53:31,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-25 17:53:31,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-25 17:53:31,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-25 17:53:31,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-25 17:53:31,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-25 17:53:31,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-25 17:53:31,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-25 17:53:31,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2022-11-25 17:53:31,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2022-11-25 17:53:31,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2022-11-25 17:53:31,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-25 17:53:31,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-25 17:53:31,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-25 17:53:31,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-25 17:53:31,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-25 17:53:31,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-25 17:53:31,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:53:31,167 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2022-11-25 17:53:31,168 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:53:31,168 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 17:53:31,225 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:53:31,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 381 transitions, 792 flow [2022-11-25 17:53:31,388 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2022-11-25 17:53:31,388 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-25 17:53:31,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3394 event pairs, 1 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2022-11-25 17:53:31,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 381 transitions, 792 flow [2022-11-25 17:53:31,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 381 transitions, 792 flow [2022-11-25 17:53:31,410 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:53:31,410 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 381 transitions, 792 flow [2022-11-25 17:53:31,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 381 transitions, 792 flow [2022-11-25 17:53:31,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 381 transitions, 792 flow [2022-11-25 17:53:31,564 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2022-11-25 17:53:31,565 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-25 17:53:31,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3394 event pairs, 1 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2022-11-25 17:53:31,618 INFO L119 LiptonReduction]: Number of co-enabled transitions 81774 [2022-11-25 17:53:39,769 INFO L134 LiptonReduction]: Checked pairs total: 137308 [2022-11-25 17:53:39,769 INFO L136 LiptonReduction]: Total number of compositions: 361 [2022-11-25 17:53:39,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:53:39,772 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;@54ff6801, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:53:39,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-25 17:53:39,774 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:53:39,774 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:53:39,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:53:39,774 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:53:39,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-25 17:53:39,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:39,775 INFO L85 PathProgramCache]: Analyzing trace with hash 76409, now seen corresponding path program 1 times [2022-11-25 17:53:39,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:39,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250115588] [2022-11-25 17:53:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:39,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:53:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:53:39,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:53:39,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250115588] [2022-11-25 17:53:39,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250115588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:53:39,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:53:39,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:53:39,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198150383] [2022-11-25 17:53:39,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:53:39,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:53:39,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:53:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:53:39,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 742 [2022-11-25 17:53:39,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 149 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:39,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:53:39,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 742 [2022-11-25 17:53:39,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand