./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/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 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f --- 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 17:45:59,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:45:59,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:45:59,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:45:59,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:45:59,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:45:59,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:45:59,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:45:59,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:45:59,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:45:59,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:45:59,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:45:59,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:45:59,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:45:59,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:45:59,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:45:59,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:45:59,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:45:59,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:45:59,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:45:59,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:45:59,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:45:59,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:45:59,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:45:59,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:45:59,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:45:59,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:45:59,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:45:59,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:45:59,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:45:59,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:45:59,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:45:59,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:45:59,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:45:59,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:45:59,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:45:59,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:45:59,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:45:59,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:45:59,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:45:59,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:45:59,412 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:45:59,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:45:59,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:45:59,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:45:59,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:45:59,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:45:59,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:45:59,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:45:59,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:45:59,439 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:45:59,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:45:59,440 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:45:59,440 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:45:59,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:45:59,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:45:59,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:45:59,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:45:59,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:45:59,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:45:59,441 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:45:59,441 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:45:59,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:45:59,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:45:59,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:45:59,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:45:59,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:45:59,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:45:59,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:45:59,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:45:59,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:45:59,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:45:59,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:45:59,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:45:59,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:45:59,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:45:59,444 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:45:59,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:45:59,444 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f [2022-11-25 17:45:59,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:45:59,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:45:59,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:45:59,823 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:45:59,823 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:45:59,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-11-25 17:46:02,999 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:46:03,289 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:46:03,290 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-11-25 17:46:03,309 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/bin/uautomizer-ZsLfNo2U6R/data/bb759029e/b4960a89651749a1befaf02d6e677dc1/FLAG97cc0a545 [2022-11-25 17:46:03,324 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/bin/uautomizer-ZsLfNo2U6R/data/bb759029e/b4960a89651749a1befaf02d6e677dc1 [2022-11-25 17:46:03,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:46:03,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:46:03,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:46:03,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:46:03,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:46:03,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:46:03" (1/1) ... [2022-11-25 17:46:03,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507117a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:03, skipping insertion in model container [2022-11-25 17:46:03,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:46:03" (1/1) ... [2022-11-25 17:46:03,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:46:03,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:46:03,609 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:46:03,973 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-11-25 17:46:03,979 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-11-25 17:46:03,980 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-11-25 17:46:04,088 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-11-25 17:46:04,090 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-11-25 17:46:04,093 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-11-25 17:46:04,095 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-11-25 17:46:04,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:46:04,122 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:46:04,147 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:46:04,179 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-11-25 17:46:04,182 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-11-25 17:46:04,184 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-11-25 17:46:04,202 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-11-25 17:46:04,207 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-11-25 17:46:04,209 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-11-25 17:46:04,212 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_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-11-25 17:46:04,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:46:04,299 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:46:04,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04 WrapperNode [2022-11-25 17:46:04,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:46:04,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:46:04,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:46:04,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:46:04,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04" (1/1) ... [2022-11-25 17:46:04,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04" (1/1) ... [2022-11-25 17:46:04,400 INFO L138 Inliner]: procedures = 310, calls = 70, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 229 [2022-11-25 17:46:04,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:46:04,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:46:04,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:46:04,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:46:04,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04" (1/1) ... [2022-11-25 17:46:04,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04" (1/1) ... [2022-11-25 17:46:04,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04" (1/1) ... [2022-11-25 17:46:04,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04" (1/1) ... [2022-11-25 17:46:04,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04" (1/1) ... [2022-11-25 17:46:04,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04" (1/1) ... [2022-11-25 17:46:04,466 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04" (1/1) ... [2022-11-25 17:46:04,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04" (1/1) ... [2022-11-25 17:46:04,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:46:04,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:46:04,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:46:04,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:46:04,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04" (1/1) ... [2022-11-25 17:46:04,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:46:04,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:04,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:46:04,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c24911-5f1b-4998-bbca-c6ea7c5a7c5d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:46:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-11-25 17:46:04,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-11-25 17:46:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-11-25 17:46:04,578 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-11-25 17:46:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:46:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:46:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:46:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:46:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:46:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:46:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:46:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:46:04,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:46:04,583 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 17:46:04,805 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:46:04,808 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:46:05,336 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:46:05,348 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:46:05,348 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 17:46:05,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:46:05 BoogieIcfgContainer [2022-11-25 17:46:05,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:46:05,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:46:05,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:46:05,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:46:05,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:46:03" (1/3) ... [2022-11-25 17:46:05,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cedd03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:46:05, skipping insertion in model container [2022-11-25 17:46:05,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:04" (2/3) ... [2022-11-25 17:46:05,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cedd03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:46:05, skipping insertion in model container [2022-11-25 17:46:05,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:46:05" (3/3) ... [2022-11-25 17:46:05,362 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2022-11-25 17:46:05,371 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:46:05,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:46:05,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-25 17:46:05,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:46:05,501 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:46:05,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 281 transitions, 578 flow [2022-11-25 17:46:05,718 INFO L130 PetriNetUnfolder]: 17/279 cut-off events. [2022-11-25 17:46:05,718 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:46:05,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 279 events. 17/279 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 622 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 227. Up to 2 conditions per place. [2022-11-25 17:46:05,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 281 transitions, 578 flow [2022-11-25 17:46:05,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 268 transitions, 545 flow [2022-11-25 17:46:05,741 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:46:05,758 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 268 transitions, 545 flow [2022-11-25 17:46:05,761 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 268 transitions, 545 flow [2022-11-25 17:46:05,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 268 transitions, 545 flow [2022-11-25 17:46:05,859 INFO L130 PetriNetUnfolder]: 17/268 cut-off events. [2022-11-25 17:46:05,860 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:46:05,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 268 events. 17/268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 578 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 227. Up to 2 conditions per place. [2022-11-25 17:46:05,881 INFO L119 LiptonReduction]: Number of co-enabled transitions 31780 [2022-11-25 17:46:17,170 INFO L134 LiptonReduction]: Checked pairs total: 64199 [2022-11-25 17:46:17,171 INFO L136 LiptonReduction]: Total number of compositions: 264 [2022-11-25 17:46:17,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:46:17,196 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;@28ef066d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:46:17,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-25 17:46:17,203 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2022-11-25 17:46:17,204 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:46:17,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:17,205 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:46:17,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writer_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 17:46:17,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:17,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1967279336, now seen corresponding path program 1 times [2022-11-25 17:46:17,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:17,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895894644] [2022-11-25 17:46:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:17,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:17,440 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 17:46:17,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:17,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895894644] [2022-11-25 17:46:17,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895894644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:17,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:17,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:46:17,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072536595] [2022-11-25 17:46:17,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:17,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:46:17,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:17,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:46:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:46:17,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 545 [2022-11-25 17:46:17,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 79 transitions, 167 flow. Second operand has 2 states, 2 states have (on average 270.0) internal successors, (540), 2 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 17:46:17,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:17,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 545 [2022-11-25 17:46:17,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:19,980 INFO L130 PetriNetUnfolder]: 12818/18565 cut-off events. [2022-11-25 17:46:19,981 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-25 17:46:20,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36899 conditions, 18565 events. 12818/18565 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 107325 event pairs, 10375 based on Foata normal form. 463/10199 useless extension candidates. Maximal degree in co-relation 36741. Up to 18269 conditions per place. [2022-11-25 17:46:20,127 INFO L137 encePairwiseOnDemand]: 538/545 looper letters, 62 selfloop transitions, 0 changer transitions 0/72 dead transitions. [2022-11-25 17:46:20,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 277 flow [2022-11-25 17:46:20,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:46:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:46:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 603 transitions. [2022-11-25 17:46:20,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5532110091743119 [2022-11-25 17:46:20,146 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 603 transitions. [2022-11-25 17:46:20,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 603 transitions. [2022-11-25 17:46:20,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:20,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 603 transitions. [2022-11-25 17:46:20,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 301.5) internal successors, (603), 2 states have internal predecessors, (603), 0 states have call successors, (0), 0 states 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 17:46:20,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 545.0) internal successors, (1635), 3 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states 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 17:46:20,170 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 545.0) internal successors, (1635), 3 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states 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 17:46:20,173 INFO L175 Difference]: Start difference. First operand has 76 places, 79 transitions, 167 flow. Second operand 2 states and 603 transitions. [2022-11-25 17:46:20,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 277 flow [2022-11-25 17:46:20,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 272 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:46:20,181 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 148 flow [2022-11-25 17:46:20,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=545, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=148, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2022-11-25 17:46:20,187 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2022-11-25 17:46:20,187 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 148 flow [2022-11-25 17:46:20,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 270.0) internal successors, (540), 2 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 17:46:20,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:20,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:46:20,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:46:20,189 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 17:46:20,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:20,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1967281475, now seen corresponding path program 1 times [2022-11-25 17:46:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:20,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573847] [2022-11-25 17:46:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:20,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:20,366 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 17:46:20,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:20,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573847] [2022-11-25 17:46:20,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:20,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:20,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:46:20,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101642287] [2022-11-25 17:46:20,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:20,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:46:20,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:20,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:46:20,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:46:20,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 545 [2022-11-25 17:46:20,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 17:46:20,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:20,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 545 [2022-11-25 17:46:20,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:24,045 INFO L130 PetriNetUnfolder]: 21460/31519 cut-off events. [2022-11-25 17:46:24,045 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:46:24,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62397 conditions, 31519 events. 21460/31519 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 207146 event pairs, 10375 based on Foata normal form. 0/17271 useless extension candidates. Maximal degree in co-relation 62394. Up to 18269 conditions per place. [2022-11-25 17:46:24,221 INFO L137 encePairwiseOnDemand]: 539/545 looper letters, 111 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2022-11-25 17:46:24,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 123 transitions, 476 flow [2022-11-25 17:46:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:46:24,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:46:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 894 transitions. [2022-11-25 17:46:24,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5467889908256881 [2022-11-25 17:46:24,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 894 transitions. [2022-11-25 17:46:24,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 894 transitions. [2022-11-25 17:46:24,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:24,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 894 transitions. [2022-11-25 17:46:24,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 17:46:24,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states 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 17:46:24,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states 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 17:46:24,237 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 148 flow. Second operand 3 states and 894 transitions. [2022-11-25 17:46:24,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 123 transitions, 476 flow [2022-11-25 17:46:24,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 123 transitions, 476 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:46:24,240 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 166 flow [2022-11-25 17:46:24,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=545, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2022-11-25 17:46:24,242 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -3 predicate places. [2022-11-25 17:46:24,242 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 166 flow [2022-11-25 17:46:24,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 17:46:24,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:24,244 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:46:24,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:46:24,244 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting writer_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 17:46:24,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:24,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1967279337, now seen corresponding path program 1 times [2022-11-25 17:46:24,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:24,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621032998] [2022-11-25 17:46:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:24,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:24,562 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 17:46:24,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:24,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621032998] [2022-11-25 17:46:24,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621032998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:24,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:24,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:46:24,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335341807] [2022-11-25 17:46:24,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:24,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:46:24,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:24,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:46:24,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:46:24,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 545 [2022-11-25 17:46:24,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 17:46:24,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:24,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 545 [2022-11-25 17:46:24,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:29,712 INFO L130 PetriNetUnfolder]: 36341/53275 cut-off events. [2022-11-25 17:46:29,712 INFO L131 PetriNetUnfolder]: For 3549/3549 co-relation queries the response was YES. [2022-11-25 17:46:29,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110227 conditions, 53275 events. 36341/53275 cut-off events. For 3549/3549 co-relation queries the response was YES. Maximal size of possible extension queue 1279. Compared 369378 event pairs, 17701 based on Foata normal form. 0/30781 useless extension candidates. Maximal degree in co-relation 110222. Up to 30831 conditions per place. [2022-11-25 17:46:29,977 INFO L137 encePairwiseOnDemand]: 539/545 looper letters, 115 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2022-11-25 17:46:29,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 127 transitions, 525 flow [2022-11-25 17:46:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:46:29,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:46:29,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 899 transitions. [2022-11-25 17:46:29,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5498470948012233 [2022-11-25 17:46:29,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 899 transitions. [2022-11-25 17:46:29,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 899 transitions. [2022-11-25 17:46:29,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:29,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 899 transitions. [2022-11-25 17:46:29,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states 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 17:46:29,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states 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 17:46:29,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states 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 17:46:29,990 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 166 flow. Second operand 3 states and 899 transitions. [2022-11-25 17:46:29,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 127 transitions, 525 flow [2022-11-25 17:46:29,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 127 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:46:29,999 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 182 flow [2022-11-25 17:46:29,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=545, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2022-11-25 17:46:30,001 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2022-11-25 17:46:30,001 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 182 flow [2022-11-25 17:46:30,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 17:46:30,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:30,003 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:30,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:46:30,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 17:46:30,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:30,004 INFO L85 PathProgramCache]: Analyzing trace with hash 856186382, now seen corresponding path program 1 times [2022-11-25 17:46:30,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:30,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509634643] [2022-11-25 17:46:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:30,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:30,735 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 17:46:30,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:30,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509634643] [2022-11-25 17:46:30,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509634643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:30,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:30,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:46:30,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767196836] [2022-11-25 17:46:30,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:30,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:46:30,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:30,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:46:30,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:46:31,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 545 [2022-11-25 17:46:31,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 251.16666666666666) internal successors, (1507), 6 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states 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 17:46:31,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:31,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 545 [2022-11-25 17:46:31,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:35,948 INFO L130 PetriNetUnfolder]: 37351/54178 cut-off events. [2022-11-25 17:46:35,966 INFO L131 PetriNetUnfolder]: For 5051/5051 co-relation queries the response was YES. [2022-11-25 17:46:36,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116322 conditions, 54178 events. 37351/54178 cut-off events. For 5051/5051 co-relation queries the response was YES. Maximal size of possible extension queue 1344. Compared 369309 event pairs, 16915 based on Foata normal form. 77/32132 useless extension candidates. Maximal degree in co-relation 116316. Up to 51827 conditions per place. [2022-11-25 17:46:36,257 INFO L137 encePairwiseOnDemand]: 537/545 looper letters, 119 selfloop transitions, 10 changer transitions 0/139 dead transitions. [2022-11-25 17:46:36,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 139 transitions, 583 flow [2022-11-25 17:46:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:46:36,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:46:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1379 transitions. [2022-11-25 17:46:36,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5060550458715596 [2022-11-25 17:46:36,262 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1379 transitions. [2022-11-25 17:46:36,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1379 transitions. [2022-11-25 17:46:36,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:36,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1379 transitions. [2022-11-25 17:46:36,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.8) internal successors, (1379), 5 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 17:46:36,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 545.0) internal successors, (3270), 6 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:36,274 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 545.0) internal successors, (3270), 6 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:36,274 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 182 flow. Second operand 5 states and 1379 transitions. [2022-11-25 17:46:36,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 139 transitions, 583 flow [2022-11-25 17:46:36,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 139 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:46:36,283 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 246 flow [2022-11-25 17:46:36,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=545, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2022-11-25 17:46:36,285 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2022-11-25 17:46:36,286 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 246 flow [2022-11-25 17:46:36,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 251.16666666666666) internal successors, (1507), 6 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states 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 17:46:36,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:36,287 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:36,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:46:36,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting writer_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 17:46:36,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:36,288 INFO L85 PathProgramCache]: Analyzing trace with hash 856119080, now seen corresponding path program 1 times [2022-11-25 17:46:36,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:36,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918713131] [2022-11-25 17:46:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:36,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:36,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:36,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918713131] [2022-11-25 17:46:36,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918713131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:36,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:36,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:46:36,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285697203] [2022-11-25 17:46:36,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:36,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:46:36,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:36,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:46:36,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:37,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 545 [2022-11-25 17:46:37,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 17:46:37,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:37,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 545 [2022-11-25 17:46:37,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:42,605 INFO L130 PetriNetUnfolder]: 37089/53791 cut-off events. [2022-11-25 17:46:42,605 INFO L131 PetriNetUnfolder]: For 9803/9803 co-relation queries the response was YES. [2022-11-25 17:46:42,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122586 conditions, 53791 events. 37089/53791 cut-off events. For 9803/9803 co-relation queries the response was YES. Maximal size of possible extension queue 1344. Compared 367394 event pairs, 17961 based on Foata normal form. 55/31857 useless extension candidates. Maximal degree in co-relation 122577. Up to 51795 conditions per place. [2022-11-25 17:46:42,859 INFO L137 encePairwiseOnDemand]: 536/545 looper letters, 122 selfloop transitions, 20 changer transitions 0/152 dead transitions. [2022-11-25 17:46:42,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 152 transitions, 719 flow [2022-11-25 17:46:42,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:46:42,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:46:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1640 transitions. [2022-11-25 17:46:42,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5015290519877675 [2022-11-25 17:46:42,866 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1640 transitions. [2022-11-25 17:46:42,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1640 transitions. [2022-11-25 17:46:42,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:42,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1640 transitions. [2022-11-25 17:46:42,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 17:46:42,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 545.0) internal successors, (3815), 7 states have internal predecessors, (3815), 0 states have call successors, (0), 0 states 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 17:46:42,882 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 545.0) internal successors, (3815), 7 states have internal predecessors, (3815), 0 states have call successors, (0), 0 states 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 17:46:42,883 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 246 flow. Second operand 6 states and 1640 transitions. [2022-11-25 17:46:42,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 152 transitions, 719 flow [2022-11-25 17:46:42,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 152 transitions, 719 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:46:42,899 INFO L231 Difference]: Finished difference. Result has 90 places, 95 transitions, 374 flow [2022-11-25 17:46:42,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=545, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=90, PETRI_TRANSITIONS=95} [2022-11-25 17:46:42,903 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 14 predicate places. [2022-11-25 17:46:42,903 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 95 transitions, 374 flow [2022-11-25 17:46:42,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 17:46:42,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:42,905 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:42,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:46:42,910 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting writer_fnErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 17:46:42,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:42,910 INFO L85 PathProgramCache]: Analyzing trace with hash 495214031, now seen corresponding path program 1 times [2022-11-25 17:46:42,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:42,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212426645] [2022-11-25 17:46:42,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:42,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:43,332 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 17:46:43,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:43,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212426645] [2022-11-25 17:46:43,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212426645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:43,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:43,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:46:43,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076627870] [2022-11-25 17:46:43,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:43,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:46:43,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:46:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:46:43,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 545 [2022-11-25 17:46:43,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 374 flow. Second operand has 8 states, 8 states have (on average 240.375) internal successors, (1923), 8 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states 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 17:46:43,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:43,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 545 [2022-11-25 17:46:43,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:55,138 INFO L130 PetriNetUnfolder]: 74206/108349 cut-off events. [2022-11-25 17:46:55,138 INFO L131 PetriNetUnfolder]: For 22481/22481 co-relation queries the response was YES. [2022-11-25 17:46:55,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256273 conditions, 108349 events. 74206/108349 cut-off events. For 22481/22481 co-relation queries the response was YES. Maximal size of possible extension queue 2555. Compared 811461 event pairs, 14971 based on Foata normal form. 0/64712 useless extension candidates. Maximal degree in co-relation 256259. Up to 31733 conditions per place.