./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS --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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- 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-4e7fbc6 [2022-11-23 02:17:05,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:17:05,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:17:05,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:17:05,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:17:05,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:17:05,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:17:05,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:17:05,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:17:05,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:17:05,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:17:05,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:17:05,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:17:05,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:17:05,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:17:05,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:17:05,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:17:05,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:17:05,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:17:05,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:17:05,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:17:05,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:17:05,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:17:05,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:17:05,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:17:05,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:17:05,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:17:05,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:17:05,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:17:05,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:17:05,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:17:05,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:17:05,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:17:05,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:17:05,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:17:05,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:17:05,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:17:05,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:17:05,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:17:05,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:17:05,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:17:05,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 02:17:05,692 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:17:05,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:17:05,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:17:05,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:17:05,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:17:05,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:17:05,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:17:05,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:17:05,697 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:17:05,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:17:05,698 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:17:05,699 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:17:05,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:17:05,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:17:05,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:17:05,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:17:05,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:17:05,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:17:05,701 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 02:17:05,701 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:17:05,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:17:05,702 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:17:05,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:17:05,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:17:05,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:17:05,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:17:05,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:17:05,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:17:05,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:17:05,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:17:05,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:17:05,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:17:05,707 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:17:05,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:17:05,707 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:17:05,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:17:05,708 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_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2022-11-23 02:17:06,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:17:06,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:17:06,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:17:06,036 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:17:06,036 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:17:06,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread/queue_longest.i [2022-11-23 02:17:09,130 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:17:09,544 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:17:09,545 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/sv-benchmarks/c/pthread/queue_longest.i [2022-11-23 02:17:09,567 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/data/14a5bed5c/3980621e6d794641a00f7f088c5cbe09/FLAGc543bb0b8 [2022-11-23 02:17:09,587 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/data/14a5bed5c/3980621e6d794641a00f7f088c5cbe09 [2022-11-23 02:17:09,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:17:09,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:17:09,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:17:09,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:17:09,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:17:09,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:17:09" (1/1) ... [2022-11-23 02:17:09,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71dd533e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:09, skipping insertion in model container [2022-11-23 02:17:09,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:17:09" (1/1) ... [2022-11-23 02:17:09,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:17:09,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:17:10,263 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_72d24163-fbe6-4100-a2a7-b109f2515c49/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-23 02:17:10,268 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_72d24163-fbe6-4100-a2a7-b109f2515c49/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-23 02:17:10,272 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_72d24163-fbe6-4100-a2a7-b109f2515c49/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-23 02:17:10,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:17:10,288 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:17:10,334 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_72d24163-fbe6-4100-a2a7-b109f2515c49/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-23 02:17:10,336 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_72d24163-fbe6-4100-a2a7-b109f2515c49/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-23 02:17:10,339 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_72d24163-fbe6-4100-a2a7-b109f2515c49/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-23 02:17:10,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:17:10,400 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:17:10,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10 WrapperNode [2022-11-23 02:17:10,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:17:10,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:17:10,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:17:10,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:17:10,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10" (1/1) ... [2022-11-23 02:17:10,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10" (1/1) ... [2022-11-23 02:17:10,487 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 259 [2022-11-23 02:17:10,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:17:10,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:17:10,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:17:10,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:17:10,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10" (1/1) ... [2022-11-23 02:17:10,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10" (1/1) ... [2022-11-23 02:17:10,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10" (1/1) ... [2022-11-23 02:17:10,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10" (1/1) ... [2022-11-23 02:17:10,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10" (1/1) ... [2022-11-23 02:17:10,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10" (1/1) ... [2022-11-23 02:17:10,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10" (1/1) ... [2022-11-23 02:17:10,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10" (1/1) ... [2022-11-23 02:17:10,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:17:10,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:17:10,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:17:10,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:17:10,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10" (1/1) ... [2022-11-23 02:17:10,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:17:10,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:17:10,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:17:10,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:17:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-23 02:17:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-23 02:17:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-23 02:17:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-23 02:17:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:17:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:17:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:17:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:17:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 02:17:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:17:10,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:17:10,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:17:10,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:17:10,656 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:17:10,945 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:17:10,948 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:17:11,609 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:17:11,622 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:17:11,622 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 02:17:11,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:17:11 BoogieIcfgContainer [2022-11-23 02:17:11,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:17:11,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:17:11,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:17:11,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:17:11,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:17:09" (1/3) ... [2022-11-23 02:17:11,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16da0234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:17:11, skipping insertion in model container [2022-11-23 02:17:11,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:10" (2/3) ... [2022-11-23 02:17:11,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16da0234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:17:11, skipping insertion in model container [2022-11-23 02:17:11,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:17:11" (3/3) ... [2022-11-23 02:17:11,635 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2022-11-23 02:17:11,645 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:17:11,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:17:11,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-23 02:17:11,658 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:17:11,840 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 02:17:11,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 305 transitions, 626 flow [2022-11-23 02:17:12,050 INFO L130 PetriNetUnfolder]: 15/303 cut-off events. [2022-11-23 02:17:12,050 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 02:17:12,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 303 events. 15/303 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 469 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-11-23 02:17:12,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 305 transitions, 626 flow [2022-11-23 02:17:12,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 293 transitions, 595 flow [2022-11-23 02:17:12,077 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:17:12,093 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 285 places, 293 transitions, 595 flow [2022-11-23 02:17:12,096 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 285 places, 293 transitions, 595 flow [2022-11-23 02:17:12,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 293 transitions, 595 flow [2022-11-23 02:17:12,173 INFO L130 PetriNetUnfolder]: 15/293 cut-off events. [2022-11-23 02:17:12,173 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:17:12,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 293 events. 15/293 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 424 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-11-23 02:17:12,189 INFO L119 LiptonReduction]: Number of co-enabled transitions 23276 [2022-11-23 02:17:23,557 INFO L134 LiptonReduction]: Checked pairs total: 46257 [2022-11-23 02:17:23,557 INFO L136 LiptonReduction]: Total number of compositions: 281 [2022-11-23 02:17:23,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:17:23,583 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;@531b28fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:17:23,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-23 02:17:23,590 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-11-23 02:17:23,591 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:17:23,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:17:23,592 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:17:23,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:17:23,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:23,599 INFO L85 PathProgramCache]: Analyzing trace with hash 908860526, now seen corresponding path program 1 times [2022-11-23 02:17:23,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:23,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616870508] [2022-11-23 02:17:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:23,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:17:25,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:25,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616870508] [2022-11-23 02:17:25,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616870508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:17:25,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:17:25,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:17:25,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513865397] [2022-11-23 02:17:25,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:17:25,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:17:25,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:25,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:17:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:17:27,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 586 [2022-11-23 02:17:27,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:27,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:17:27,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 586 [2022-11-23 02:17:27,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:17:29,245 INFO L130 PetriNetUnfolder]: 2757/4564 cut-off events. [2022-11-23 02:17:29,245 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-11-23 02:17:29,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9057 conditions, 4564 events. 2757/4564 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 24070 event pairs, 2354 based on Foata normal form. 0/3158 useless extension candidates. Maximal degree in co-relation 8854. Up to 4385 conditions per place. [2022-11-23 02:17:29,280 INFO L137 encePairwiseOnDemand]: 576/586 looper letters, 69 selfloop transitions, 9 changer transitions 0/83 dead transitions. [2022-11-23 02:17:29,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 331 flow [2022-11-23 02:17:29,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:17:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:17:29,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1678 transitions. [2022-11-23 02:17:29,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47724687144482364 [2022-11-23 02:17:29,311 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1678 transitions. [2022-11-23 02:17:29,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1678 transitions. [2022-11-23 02:17:29,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:17:29,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1678 transitions. [2022-11-23 02:17:29,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:29,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:29,355 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:29,357 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 161 flow. Second operand 6 states and 1678 transitions. [2022-11-23 02:17:29,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 331 flow [2022-11-23 02:17:29,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 326 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 02:17:29,367 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 212 flow [2022-11-23 02:17:29,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2022-11-23 02:17:29,374 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2022-11-23 02:17:29,375 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 212 flow [2022-11-23 02:17:29,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:29,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:17:29,378 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:17:29,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:17:29,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:17:29,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:29,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1904222162, now seen corresponding path program 1 times [2022-11-23 02:17:29,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:29,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231230688] [2022-11-23 02:17:29,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:29,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:17:30,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:30,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231230688] [2022-11-23 02:17:30,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231230688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:17:30,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:17:30,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:17:30,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241103022] [2022-11-23 02:17:30,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:17:30,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:17:30,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:30,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:17:30,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:17:32,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 586 [2022-11-23 02:17:32,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:32,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:17:32,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 586 [2022-11-23 02:17:32,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:17:35,822 INFO L130 PetriNetUnfolder]: 3009/4988 cut-off events. [2022-11-23 02:17:35,822 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-11-23 02:17:35,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10331 conditions, 4988 events. 3009/4988 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 27069 event pairs, 647 based on Foata normal form. 25/3568 useless extension candidates. Maximal degree in co-relation 9209. Up to 4416 conditions per place. [2022-11-23 02:17:35,857 INFO L137 encePairwiseOnDemand]: 577/586 looper letters, 127 selfloop transitions, 17 changer transitions 0/149 dead transitions. [2022-11-23 02:17:35,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 149 transitions, 654 flow [2022-11-23 02:17:35,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:17:35,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:17:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1720 transitions. [2022-11-23 02:17:35,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4891922639362912 [2022-11-23 02:17:35,863 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1720 transitions. [2022-11-23 02:17:35,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1720 transitions. [2022-11-23 02:17:35,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:17:35,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1720 transitions. [2022-11-23 02:17:35,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.6666666666667) internal successors, (1720), 6 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:35,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:35,880 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:35,881 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 212 flow. Second operand 6 states and 1720 transitions. [2022-11-23 02:17:35,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 149 transitions, 654 flow [2022-11-23 02:17:35,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 149 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:17:35,896 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 307 flow [2022-11-23 02:17:35,896 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2022-11-23 02:17:35,897 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2022-11-23 02:17:35,897 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 307 flow [2022-11-23 02:17:35,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:35,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:17:35,899 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:17:35,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:17:35,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:17:35,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:35,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1889922482, now seen corresponding path program 2 times [2022-11-23 02:17:35,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:35,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725288526] [2022-11-23 02:17:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:17:37,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:37,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725288526] [2022-11-23 02:17:37,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725288526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:17:37,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:17:37,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:17:37,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586286536] [2022-11-23 02:17:37,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:17:37,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:17:37,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:37,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:17:37,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:17:39,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 586 [2022-11-23 02:17:39,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:39,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:17:39,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 586 [2022-11-23 02:17:39,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:17:41,744 INFO L130 PetriNetUnfolder]: 3136/5188 cut-off events. [2022-11-23 02:17:41,744 INFO L131 PetriNetUnfolder]: For 1037/1037 co-relation queries the response was YES. [2022-11-23 02:17:41,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11478 conditions, 5188 events. 3136/5188 cut-off events. For 1037/1037 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 28481 event pairs, 623 based on Foata normal form. 25/3730 useless extension candidates. Maximal degree in co-relation 10225. Up to 4447 conditions per place. [2022-11-23 02:17:41,789 INFO L137 encePairwiseOnDemand]: 577/586 looper letters, 127 selfloop transitions, 22 changer transitions 0/154 dead transitions. [2022-11-23 02:17:41,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 154 transitions, 760 flow [2022-11-23 02:17:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:17:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:17:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1719 transitions. [2022-11-23 02:17:41,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48890784982935154 [2022-11-23 02:17:41,796 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1719 transitions. [2022-11-23 02:17:41,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1719 transitions. [2022-11-23 02:17:41,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:17:41,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1719 transitions. [2022-11-23 02:17:41,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.5) internal successors, (1719), 6 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:41,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:41,890 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:41,890 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 307 flow. Second operand 6 states and 1719 transitions. [2022-11-23 02:17:41,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 154 transitions, 760 flow [2022-11-23 02:17:41,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 154 transitions, 740 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-23 02:17:41,911 INFO L231 Difference]: Finished difference. Result has 95 places, 97 transitions, 392 flow [2022-11-23 02:17:41,912 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=95, PETRI_TRANSITIONS=97} [2022-11-23 02:17:41,915 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2022-11-23 02:17:41,915 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 97 transitions, 392 flow [2022-11-23 02:17:41,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:41,916 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:17:41,917 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:17:41,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:17:41,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:17:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:41,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1890092672, now seen corresponding path program 3 times [2022-11-23 02:17:41,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:41,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050850131] [2022-11-23 02:17:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:41,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:17:42,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:42,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050850131] [2022-11-23 02:17:42,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050850131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:17:42,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:17:42,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:17:42,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695890257] [2022-11-23 02:17:42,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:17:42,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:17:42,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:42,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:17:42,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:17:43,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 586 [2022-11-23 02:17:43,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 97 transitions, 392 flow. Second operand has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:43,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:17:43,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 586 [2022-11-23 02:17:43,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:17:44,332 INFO L130 PetriNetUnfolder]: 3186/5272 cut-off events. [2022-11-23 02:17:44,334 INFO L131 PetriNetUnfolder]: For 1554/1554 co-relation queries the response was YES. [2022-11-23 02:17:44,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11950 conditions, 5272 events. 3186/5272 cut-off events. For 1554/1554 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 29209 event pairs, 710 based on Foata normal form. 25/3795 useless extension candidates. Maximal degree in co-relation 11245. Up to 4409 conditions per place. [2022-11-23 02:17:44,387 INFO L137 encePairwiseOnDemand]: 578/586 looper letters, 129 selfloop transitions, 23 changer transitions 0/157 dead transitions. [2022-11-23 02:17:44,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 157 transitions, 838 flow [2022-11-23 02:17:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:17:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:17:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1718 transitions. [2022-11-23 02:17:44,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48862343572241185 [2022-11-23 02:17:44,396 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1718 transitions. [2022-11-23 02:17:44,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1718 transitions. [2022-11-23 02:17:44,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:17:44,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1718 transitions. [2022-11-23 02:17:44,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.3333333333333) internal successors, (1718), 6 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:44,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:44,411 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:44,412 INFO L175 Difference]: Start difference. First operand has 95 places, 97 transitions, 392 flow. Second operand 6 states and 1718 transitions. [2022-11-23 02:17:44,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 157 transitions, 838 flow [2022-11-23 02:17:44,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 157 transitions, 814 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-11-23 02:17:44,423 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 453 flow [2022-11-23 02:17:44,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=453, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2022-11-23 02:17:44,426 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2022-11-23 02:17:44,426 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 453 flow [2022-11-23 02:17:44,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:44,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:17:44,427 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:17:44,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:17:44,428 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:17:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:44,429 INFO L85 PathProgramCache]: Analyzing trace with hash 855421516, now seen corresponding path program 1 times [2022-11-23 02:17:44,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:44,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690232674] [2022-11-23 02:17:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:44,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:17:44,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:44,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690232674] [2022-11-23 02:17:44,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690232674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:17:44,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:17:44,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:17:44,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603317017] [2022-11-23 02:17:44,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:17:44,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:17:44,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:44,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:17:44,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:17:44,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 586 [2022-11-23 02:17:44,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 453 flow. Second operand has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:44,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:17:44,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 586 [2022-11-23 02:17:44,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:17:45,805 INFO L130 PetriNetUnfolder]: 5419/9001 cut-off events. [2022-11-23 02:17:45,806 INFO L131 PetriNetUnfolder]: For 5523/5523 co-relation queries the response was YES. [2022-11-23 02:17:45,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20519 conditions, 9001 events. 5419/9001 cut-off events. For 5523/5523 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 55952 event pairs, 2451 based on Foata normal form. 0/6537 useless extension candidates. Maximal degree in co-relation 19395. Up to 5013 conditions per place. [2022-11-23 02:17:45,877 INFO L137 encePairwiseOnDemand]: 581/586 looper letters, 170 selfloop transitions, 2 changer transitions 0/178 dead transitions. [2022-11-23 02:17:45,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 178 transitions, 1116 flow [2022-11-23 02:17:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:17:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:17:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2022-11-23 02:17:45,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5659840728100114 [2022-11-23 02:17:45,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2022-11-23 02:17:45,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2022-11-23 02:17:45,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:17:45,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2022-11-23 02:17:45,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:45,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:45,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:45,899 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 453 flow. Second operand 3 states and 995 transitions. [2022-11-23 02:17:45,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 178 transitions, 1116 flow [2022-11-23 02:17:45,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 178 transitions, 1068 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-11-23 02:17:45,922 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 443 flow [2022-11-23 02:17:45,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=443, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2022-11-23 02:17:45,926 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2022-11-23 02:17:45,926 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 443 flow [2022-11-23 02:17:45,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:45,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:17:45,927 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:17:45,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:17:45,928 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:17:45,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:45,928 INFO L85 PathProgramCache]: Analyzing trace with hash 385786932, now seen corresponding path program 1 times [2022-11-23 02:17:45,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:45,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729518098] [2022-11-23 02:17:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:45,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:17:46,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:46,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729518098] [2022-11-23 02:17:46,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729518098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:17:46,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:17:46,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:17:46,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384623392] [2022-11-23 02:17:46,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:17:46,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:17:46,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:46,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:17:46,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:17:48,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 586 [2022-11-23 02:17:48,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 443 flow. Second operand has 7 states, 7 states have (on average 267.2857142857143) internal successors, (1871), 7 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:48,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:17:48,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 586 [2022-11-23 02:17:48,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:17:51,157 INFO L130 PetriNetUnfolder]: 6414/10729 cut-off events. [2022-11-23 02:17:51,157 INFO L131 PetriNetUnfolder]: For 5507/5507 co-relation queries the response was YES. [2022-11-23 02:17:51,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24406 conditions, 10729 events. 6414/10729 cut-off events. For 5507/5507 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 67535 event pairs, 3896 based on Foata normal form. 0/7936 useless extension candidates. Maximal degree in co-relation 22704. Up to 8470 conditions per place. [2022-11-23 02:17:51,238 INFO L137 encePairwiseOnDemand]: 567/586 looper letters, 111 selfloop transitions, 23 changer transitions 0/139 dead transitions. [2022-11-23 02:17:51,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 811 flow [2022-11-23 02:17:51,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:17:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:17:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1978 transitions. [2022-11-23 02:17:51,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48220380302291566 [2022-11-23 02:17:51,246 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1978 transitions. [2022-11-23 02:17:51,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1978 transitions. [2022-11-23 02:17:51,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:17:51,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1978 transitions. [2022-11-23 02:17:51,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 282.57142857142856) internal successors, (1978), 7 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:51,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 586.0) internal successors, (4688), 8 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:51,262 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 586.0) internal successors, (4688), 8 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:51,263 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 443 flow. Second operand 7 states and 1978 transitions. [2022-11-23 02:17:51,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 811 flow [2022-11-23 02:17:51,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 139 transitions, 807 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:17:51,272 INFO L231 Difference]: Finished difference. Result has 109 places, 111 transitions, 572 flow [2022-11-23 02:17:51,272 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=572, PETRI_PLACES=109, PETRI_TRANSITIONS=111} [2022-11-23 02:17:51,273 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 35 predicate places. [2022-11-23 02:17:51,273 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 111 transitions, 572 flow [2022-11-23 02:17:51,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.2857142857143) internal successors, (1871), 7 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:51,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:17:51,275 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:17:51,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:17:51,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:17:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash 744558578, now seen corresponding path program 1 times [2022-11-23 02:17:51,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:51,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410585919] [2022-11-23 02:17:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:51,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:17:51,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:51,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410585919] [2022-11-23 02:17:51,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410585919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:17:51,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:17:51,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:17:51,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742937037] [2022-11-23 02:17:51,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:17:51,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:17:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:51,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:17:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:17:51,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 586 [2022-11-23 02:17:51,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 111 transitions, 572 flow. Second operand has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:51,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:17:51,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 586 [2022-11-23 02:17:51,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:17:52,577 INFO L130 PetriNetUnfolder]: 4969/8511 cut-off events. [2022-11-23 02:17:52,577 INFO L131 PetriNetUnfolder]: For 3987/3987 co-relation queries the response was YES. [2022-11-23 02:17:52,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21027 conditions, 8511 events. 4969/8511 cut-off events. For 3987/3987 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 50806 event pairs, 2568 based on Foata normal form. 200/6607 useless extension candidates. Maximal degree in co-relation 19104. Up to 5282 conditions per place. [2022-11-23 02:17:52,647 INFO L137 encePairwiseOnDemand]: 582/586 looper letters, 126 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2022-11-23 02:17:52,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 134 transitions, 865 flow [2022-11-23 02:17:52,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:17:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:17:52,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 963 transitions. [2022-11-23 02:17:52,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5477815699658704 [2022-11-23 02:17:52,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 963 transitions. [2022-11-23 02:17:52,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 963 transitions. [2022-11-23 02:17:52,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:17:52,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 963 transitions. [2022-11-23 02:17:52,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:52,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:52,662 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:52,663 INFO L175 Difference]: Start difference. First operand has 109 places, 111 transitions, 572 flow. Second operand 3 states and 963 transitions. [2022-11-23 02:17:52,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 134 transitions, 865 flow [2022-11-23 02:17:52,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 134 transitions, 787 flow, removed 9 selfloop flow, removed 11 redundant places. [2022-11-23 02:17:52,683 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 415 flow [2022-11-23 02:17:52,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=415, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2022-11-23 02:17:52,684 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2022-11-23 02:17:52,684 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 415 flow [2022-11-23 02:17:52,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:52,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:17:52,685 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:17:52,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:17:52,686 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:17:52,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:52,686 INFO L85 PathProgramCache]: Analyzing trace with hash -758721515, now seen corresponding path program 1 times [2022-11-23 02:17:52,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:52,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613877939] [2022-11-23 02:17:52,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:52,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:17:53,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:53,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613877939] [2022-11-23 02:17:53,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613877939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:17:53,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:17:53,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:17:53,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962284948] [2022-11-23 02:17:53,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:17:53,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:17:53,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:53,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:17:53,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:17:55,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 586 [2022-11-23 02:17:55,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 415 flow. Second operand has 8 states, 8 states have (on average 264.25) internal successors, (2114), 8 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:55,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:17:55,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 586 [2022-11-23 02:17:55,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:17:58,420 INFO L130 PetriNetUnfolder]: 5226/8811 cut-off events. [2022-11-23 02:17:58,420 INFO L131 PetriNetUnfolder]: For 2817/2817 co-relation queries the response was YES. [2022-11-23 02:17:58,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21316 conditions, 8811 events. 5226/8811 cut-off events. For 2817/2817 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 51382 event pairs, 1424 based on Foata normal form. 63/6730 useless extension candidates. Maximal degree in co-relation 20038. Up to 7987 conditions per place. [2022-11-23 02:17:58,478 INFO L137 encePairwiseOnDemand]: 577/586 looper letters, 119 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2022-11-23 02:17:58,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 140 transitions, 829 flow [2022-11-23 02:17:58,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:17:58,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:17:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1695 transitions. [2022-11-23 02:17:58,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48208191126279865 [2022-11-23 02:17:58,485 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1695 transitions. [2022-11-23 02:17:58,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1695 transitions. [2022-11-23 02:17:58,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:17:58,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1695 transitions. [2022-11-23 02:17:58,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:58,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:58,499 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:58,500 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 415 flow. Second operand 6 states and 1695 transitions. [2022-11-23 02:17:58,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 140 transitions, 829 flow [2022-11-23 02:17:58,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 140 transitions, 826 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:17:58,515 INFO L231 Difference]: Finished difference. Result has 104 places, 97 transitions, 460 flow [2022-11-23 02:17:58,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=460, PETRI_PLACES=104, PETRI_TRANSITIONS=97} [2022-11-23 02:17:58,516 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2022-11-23 02:17:58,516 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 97 transitions, 460 flow [2022-11-23 02:17:58,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 264.25) internal successors, (2114), 8 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:17:58,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:17:58,518 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:17:58,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:17:58,518 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:17:58,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:58,519 INFO L85 PathProgramCache]: Analyzing trace with hash -923350693, now seen corresponding path program 2 times [2022-11-23 02:17:58,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:58,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344838239] [2022-11-23 02:17:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:58,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:17:59,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:59,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344838239] [2022-11-23 02:17:59,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344838239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:17:59,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:17:59,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:17:59,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830290774] [2022-11-23 02:17:59,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:17:59,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:17:59,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:59,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:17:59,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:18:01,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 586 [2022-11-23 02:18:01,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 97 transitions, 460 flow. Second operand has 8 states, 8 states have (on average 264.25) internal successors, (2114), 8 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:01,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:01,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 586 [2022-11-23 02:18:01,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:03,473 INFO L130 PetriNetUnfolder]: 5057/8578 cut-off events. [2022-11-23 02:18:03,473 INFO L131 PetriNetUnfolder]: For 2617/2617 co-relation queries the response was YES. [2022-11-23 02:18:03,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20812 conditions, 8578 events. 5057/8578 cut-off events. For 2617/2617 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 50890 event pairs, 1035 based on Foata normal form. 63/6529 useless extension candidates. Maximal degree in co-relation 19426. Up to 5782 conditions per place. [2022-11-23 02:18:03,545 INFO L137 encePairwiseOnDemand]: 569/586 looper letters, 129 selfloop transitions, 22 changer transitions 0/157 dead transitions. [2022-11-23 02:18:03,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 157 transitions, 936 flow [2022-11-23 02:18:03,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:18:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:18:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1977 transitions. [2022-11-23 02:18:03,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48196001950268164 [2022-11-23 02:18:03,554 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1977 transitions. [2022-11-23 02:18:03,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1977 transitions. [2022-11-23 02:18:03,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:03,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1977 transitions. [2022-11-23 02:18:03,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 282.42857142857144) internal successors, (1977), 7 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:03,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 586.0) internal successors, (4688), 8 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:03,576 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 586.0) internal successors, (4688), 8 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:03,576 INFO L175 Difference]: Start difference. First operand has 104 places, 97 transitions, 460 flow. Second operand 7 states and 1977 transitions. [2022-11-23 02:18:03,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 157 transitions, 936 flow [2022-11-23 02:18:03,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 157 transitions, 908 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-23 02:18:03,594 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 446 flow [2022-11-23 02:18:03,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2022-11-23 02:18:03,596 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2022-11-23 02:18:03,596 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 446 flow [2022-11-23 02:18:03,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 264.25) internal successors, (2114), 8 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:03,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:03,598 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:03,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:18:03,598 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:03,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:03,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1823564649, now seen corresponding path program 1 times [2022-11-23 02:18:03,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:03,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114504126] [2022-11-23 02:18:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:03,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:18:03,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:03,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114504126] [2022-11-23 02:18:03,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114504126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:03,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:03,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:18:03,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418286517] [2022-11-23 02:18:03,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:03,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:18:03,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:03,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:18:03,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:18:03,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 586 [2022-11-23 02:18:03,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:03,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:03,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 586 [2022-11-23 02:18:03,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:04,901 INFO L130 PetriNetUnfolder]: 4728/8209 cut-off events. [2022-11-23 02:18:04,901 INFO L131 PetriNetUnfolder]: For 5156/5166 co-relation queries the response was YES. [2022-11-23 02:18:04,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20198 conditions, 8209 events. 4728/8209 cut-off events. For 5156/5166 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 49628 event pairs, 723 based on Foata normal form. 4/6281 useless extension candidates. Maximal degree in co-relation 18899. Up to 6306 conditions per place. [2022-11-23 02:18:04,967 INFO L137 encePairwiseOnDemand]: 581/586 looper letters, 126 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2022-11-23 02:18:04,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 138 transitions, 908 flow [2022-11-23 02:18:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:18:04,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:18:04,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2022-11-23 02:18:04,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5466439135381115 [2022-11-23 02:18:04,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2022-11-23 02:18:04,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2022-11-23 02:18:04,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:04,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2022-11-23 02:18:04,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:04,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:04,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:04,983 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 446 flow. Second operand 3 states and 961 transitions. [2022-11-23 02:18:04,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 138 transitions, 908 flow [2022-11-23 02:18:04,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 138 transitions, 857 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-23 02:18:04,994 INFO L231 Difference]: Finished difference. Result has 100 places, 93 transitions, 434 flow [2022-11-23 02:18:04,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2022-11-23 02:18:04,995 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2022-11-23 02:18:04,996 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 434 flow [2022-11-23 02:18:04,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:04,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:04,997 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:04,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:18:04,997 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:04,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1823564533, now seen corresponding path program 1 times [2022-11-23 02:18:04,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:04,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417297145] [2022-11-23 02:18:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:04,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:05,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:05,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417297145] [2022-11-23 02:18:05,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417297145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:18:05,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707118806] [2022-11-23 02:18:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:05,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:05,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:05,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:05,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:18:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:05,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:18:05,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:18:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:05,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:18:05,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707118806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:05,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:18:05,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-23 02:18:05,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797855624] [2022-11-23 02:18:05,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:05,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:18:05,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:05,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:18:05,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:18:05,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 586 [2022-11-23 02:18:05,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 290.25) internal successors, (1161), 4 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:05,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:05,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 586 [2022-11-23 02:18:05,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:06,494 INFO L130 PetriNetUnfolder]: 4508/7809 cut-off events. [2022-11-23 02:18:06,494 INFO L131 PetriNetUnfolder]: For 5825/5831 co-relation queries the response was YES. [2022-11-23 02:18:06,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20163 conditions, 7809 events. 4508/7809 cut-off events. For 5825/5831 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 47144 event pairs, 323 based on Foata normal form. 154/6223 useless extension candidates. Maximal degree in co-relation 18892. Up to 3692 conditions per place. [2022-11-23 02:18:06,541 INFO L137 encePairwiseOnDemand]: 583/586 looper letters, 190 selfloop transitions, 2 changer transitions 0/199 dead transitions. [2022-11-23 02:18:06,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 199 transitions, 1226 flow [2022-11-23 02:18:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:18:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:18:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1303 transitions. [2022-11-23 02:18:06,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5558873720136519 [2022-11-23 02:18:06,546 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1303 transitions. [2022-11-23 02:18:06,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1303 transitions. [2022-11-23 02:18:06,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:06,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1303 transitions. [2022-11-23 02:18:06,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 325.75) internal successors, (1303), 4 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:06,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:06,556 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:06,556 INFO L175 Difference]: Start difference. First operand has 100 places, 93 transitions, 434 flow. Second operand 4 states and 1303 transitions. [2022-11-23 02:18:06,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 199 transitions, 1226 flow [2022-11-23 02:18:06,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 199 transitions, 1221 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:18:06,568 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 429 flow [2022-11-23 02:18:06,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=429, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2022-11-23 02:18:06,569 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2022-11-23 02:18:06,569 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 429 flow [2022-11-23 02:18:06,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.25) internal successors, (1161), 4 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:06,570 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:06,570 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:06,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:18:06,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d24163-fbe6-4100-a2a7-b109f2515c49/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:06,779 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:06,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:06,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1066026055, now seen corresponding path program 1 times [2022-11-23 02:18:06,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:06,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626297750] [2022-11-23 02:18:06,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:06,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:06,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:06,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626297750] [2022-11-23 02:18:06,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626297750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:06,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:06,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:18:06,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749390550] [2022-11-23 02:18:06,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:06,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:18:06,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:06,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:18:06,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:18:06,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 586 [2022-11-23 02:18:06,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 429 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:06,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:06,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 586 [2022-11-23 02:18:06,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:08,011 INFO L130 PetriNetUnfolder]: 5047/8829 cut-off events. [2022-11-23 02:18:08,012 INFO L131 PetriNetUnfolder]: For 6030/6030 co-relation queries the response was YES. [2022-11-23 02:18:08,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22903 conditions, 8829 events. 5047/8829 cut-off events. For 6030/6030 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 54311 event pairs, 2544 based on Foata normal form. 36/6993 useless extension candidates. Maximal degree in co-relation 21653. Up to 7345 conditions per place. [2022-11-23 02:18:08,081 INFO L137 encePairwiseOnDemand]: 579/586 looper letters, 129 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-11-23 02:18:08,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 138 transitions, 862 flow [2022-11-23 02:18:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:18:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:18:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2022-11-23 02:18:08,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5472127417519909 [2022-11-23 02:18:08,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2022-11-23 02:18:08,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2022-11-23 02:18:08,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:08,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2022-11-23 02:18:08,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:08,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:08,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:08,094 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 429 flow. Second operand 3 states and 962 transitions. [2022-11-23 02:18:08,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 138 transitions, 862 flow [2022-11-23 02:18:08,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 138 transitions, 856 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:18:08,111 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 446 flow [2022-11-23 02:18:08,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2022-11-23 02:18:08,112 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 28 predicate places. [2022-11-23 02:18:08,112 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 446 flow [2022-11-23 02:18:08,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:08,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:08,113 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:08,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:18:08,114 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:08,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:08,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1315795650, now seen corresponding path program 1 times [2022-11-23 02:18:08,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:08,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355816291] [2022-11-23 02:18:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:08,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:09,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:09,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355816291] [2022-11-23 02:18:09,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355816291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:09,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:09,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 02:18:09,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038318529] [2022-11-23 02:18:09,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:09,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 02:18:09,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:09,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 02:18:09,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:18:11,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 586 [2022-11-23 02:18:11,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 446 flow. Second operand has 14 states, 14 states have (on average 251.28571428571428) internal successors, (3518), 14 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:11,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:11,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 586 [2022-11-23 02:18:11,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:13,261 INFO L130 PetriNetUnfolder]: 5241/8955 cut-off events. [2022-11-23 02:18:13,261 INFO L131 PetriNetUnfolder]: For 5894/5894 co-relation queries the response was YES. [2022-11-23 02:18:13,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24137 conditions, 8955 events. 5241/8955 cut-off events. For 5894/5894 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 51773 event pairs, 4128 based on Foata normal form. 0/7143 useless extension candidates. Maximal degree in co-relation 22906. Up to 8511 conditions per place. [2022-11-23 02:18:13,310 INFO L137 encePairwiseOnDemand]: 568/586 looper letters, 84 selfloop transitions, 30 changer transitions 1/121 dead transitions. [2022-11-23 02:18:13,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 121 transitions, 787 flow [2022-11-23 02:18:13,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 02:18:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 02:18:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4099 transitions. [2022-11-23 02:18:13,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4371800341296928 [2022-11-23 02:18:13,322 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4099 transitions. [2022-11-23 02:18:13,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4099 transitions. [2022-11-23 02:18:13,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:13,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4099 transitions. [2022-11-23 02:18:13,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 256.1875) internal successors, (4099), 16 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:13,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 586.0) internal successors, (9962), 17 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:13,350 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 586.0) internal successors, (9962), 17 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:13,350 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 446 flow. Second operand 16 states and 4099 transitions. [2022-11-23 02:18:13,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 121 transitions, 787 flow [2022-11-23 02:18:13,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 121 transitions, 783 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:18:13,362 INFO L231 Difference]: Finished difference. Result has 125 places, 112 transitions, 636 flow [2022-11-23 02:18:13,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=636, PETRI_PLACES=125, PETRI_TRANSITIONS=112} [2022-11-23 02:18:13,363 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 51 predicate places. [2022-11-23 02:18:13,363 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 112 transitions, 636 flow [2022-11-23 02:18:13,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 251.28571428571428) internal successors, (3518), 14 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:13,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:13,365 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:13,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:18:13,365 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:13,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:13,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1315795684, now seen corresponding path program 1 times [2022-11-23 02:18:13,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:13,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50427435] [2022-11-23 02:18:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:13,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:14,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:14,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50427435] [2022-11-23 02:18:14,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50427435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:14,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:14,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:18:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602972280] [2022-11-23 02:18:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:14,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:18:14,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:18:14,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:18:15,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 586 [2022-11-23 02:18:15,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 112 transitions, 636 flow. Second operand has 11 states, 11 states have (on average 264.6363636363636) internal successors, (2911), 11 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:15,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:15,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 586 [2022-11-23 02:18:15,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:16,824 INFO L130 PetriNetUnfolder]: 5932/10179 cut-off events. [2022-11-23 02:18:16,824 INFO L131 PetriNetUnfolder]: For 6514/6514 co-relation queries the response was YES. [2022-11-23 02:18:16,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28487 conditions, 10179 events. 5932/10179 cut-off events. For 6514/6514 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 60826 event pairs, 2034 based on Foata normal form. 0/8147 useless extension candidates. Maximal degree in co-relation 20099. Up to 8130 conditions per place. [2022-11-23 02:18:16,895 INFO L137 encePairwiseOnDemand]: 572/586 looper letters, 153 selfloop transitions, 36 changer transitions 3/198 dead transitions. [2022-11-23 02:18:16,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 198 transitions, 1359 flow [2022-11-23 02:18:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:18:16,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-23 02:18:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2770 transitions. [2022-11-23 02:18:16,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4726962457337884 [2022-11-23 02:18:16,904 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2770 transitions. [2022-11-23 02:18:16,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2770 transitions. [2022-11-23 02:18:16,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:16,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2770 transitions. [2022-11-23 02:18:16,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 277.0) internal successors, (2770), 10 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:16,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 586.0) internal successors, (6446), 11 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:16,922 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 586.0) internal successors, (6446), 11 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:16,922 INFO L175 Difference]: Start difference. First operand has 125 places, 112 transitions, 636 flow. Second operand 10 states and 2770 transitions. [2022-11-23 02:18:16,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 198 transitions, 1359 flow [2022-11-23 02:18:16,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 198 transitions, 1314 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-23 02:18:16,947 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 743 flow [2022-11-23 02:18:16,947 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=743, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2022-11-23 02:18:16,948 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 57 predicate places. [2022-11-23 02:18:16,948 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 743 flow [2022-11-23 02:18:16,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 264.6363636363636) internal successors, (2911), 11 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:16,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:16,949 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:16,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 02:18:16,950 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:16,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:16,950 INFO L85 PathProgramCache]: Analyzing trace with hash -417617283, now seen corresponding path program 1 times [2022-11-23 02:18:16,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:16,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113470114] [2022-11-23 02:18:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:16,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:18,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:18,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:18,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113470114] [2022-11-23 02:18:18,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113470114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:18,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:18,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 02:18:18,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980038189] [2022-11-23 02:18:18,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:18,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 02:18:18,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:18,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 02:18:18,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:18:20,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 586 [2022-11-23 02:18:20,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 119 transitions, 743 flow. Second operand has 16 states, 16 states have (on average 248.1875) internal successors, (3971), 16 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:20,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:20,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 586 [2022-11-23 02:18:20,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:22,820 INFO L130 PetriNetUnfolder]: 5887/10104 cut-off events. [2022-11-23 02:18:22,821 INFO L131 PetriNetUnfolder]: For 8396/8396 co-relation queries the response was YES. [2022-11-23 02:18:22,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29428 conditions, 10104 events. 5887/10104 cut-off events. For 8396/8396 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 60117 event pairs, 2148 based on Foata normal form. 0/8226 useless extension candidates. Maximal degree in co-relation 20697. Up to 8035 conditions per place. [2022-11-23 02:18:22,905 INFO L137 encePairwiseOnDemand]: 569/586 looper letters, 221 selfloop transitions, 44 changer transitions 3/274 dead transitions. [2022-11-23 02:18:22,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 274 transitions, 1957 flow [2022-11-23 02:18:22,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 02:18:22,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 02:18:22,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4145 transitions. [2022-11-23 02:18:22,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4420861774744027 [2022-11-23 02:18:22,918 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4145 transitions. [2022-11-23 02:18:22,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4145 transitions. [2022-11-23 02:18:22,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:22,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4145 transitions. [2022-11-23 02:18:22,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 259.0625) internal successors, (4145), 16 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:22,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 586.0) internal successors, (9962), 17 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:22,943 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 586.0) internal successors, (9962), 17 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:22,943 INFO L175 Difference]: Start difference. First operand has 131 places, 119 transitions, 743 flow. Second operand 16 states and 4145 transitions. [2022-11-23 02:18:22,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 274 transitions, 1957 flow [2022-11-23 02:18:22,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 274 transitions, 1925 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-11-23 02:18:22,986 INFO L231 Difference]: Finished difference. Result has 145 places, 123 transitions, 851 flow [2022-11-23 02:18:22,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=851, PETRI_PLACES=145, PETRI_TRANSITIONS=123} [2022-11-23 02:18:22,987 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 71 predicate places. [2022-11-23 02:18:22,987 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 123 transitions, 851 flow [2022-11-23 02:18:22,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 248.1875) internal successors, (3971), 16 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:22,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:22,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:22,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 02:18:22,989 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:22,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1183870651, now seen corresponding path program 2 times [2022-11-23 02:18:22,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:22,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067631441] [2022-11-23 02:18:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:22,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:25,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:25,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067631441] [2022-11-23 02:18:25,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067631441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:25,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:25,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 02:18:25,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091636510] [2022-11-23 02:18:25,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:25,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 02:18:25,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:25,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 02:18:25,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:18:27,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 586 [2022-11-23 02:18:27,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 123 transitions, 851 flow. Second operand has 16 states, 16 states have (on average 248.1875) internal successors, (3971), 16 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:27,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:27,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 586 [2022-11-23 02:18:27,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:30,314 INFO L130 PetriNetUnfolder]: 6461/11087 cut-off events. [2022-11-23 02:18:30,314 INFO L131 PetriNetUnfolder]: For 9750/9750 co-relation queries the response was YES. [2022-11-23 02:18:30,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32911 conditions, 11087 events. 6461/11087 cut-off events. For 9750/9750 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 67426 event pairs, 2063 based on Foata normal form. 34/9053 useless extension candidates. Maximal degree in co-relation 22173. Up to 7939 conditions per place. [2022-11-23 02:18:30,416 INFO L137 encePairwiseOnDemand]: 568/586 looper letters, 221 selfloop transitions, 51 changer transitions 3/281 dead transitions. [2022-11-23 02:18:30,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 281 transitions, 2102 flow [2022-11-23 02:18:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 02:18:30,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 02:18:30,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4143 transitions. [2022-11-23 02:18:30,425 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44187286689419797 [2022-11-23 02:18:30,425 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4143 transitions. [2022-11-23 02:18:30,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4143 transitions. [2022-11-23 02:18:30,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:30,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4143 transitions. [2022-11-23 02:18:30,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 258.9375) internal successors, (4143), 16 states have internal predecessors, (4143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:30,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 586.0) internal successors, (9962), 17 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:30,447 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 586.0) internal successors, (9962), 17 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:30,448 INFO L175 Difference]: Start difference. First operand has 145 places, 123 transitions, 851 flow. Second operand 16 states and 4143 transitions. [2022-11-23 02:18:30,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 281 transitions, 2102 flow [2022-11-23 02:18:30,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 281 transitions, 2035 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-11-23 02:18:30,496 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 983 flow [2022-11-23 02:18:30,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=983, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2022-11-23 02:18:30,497 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 84 predicate places. [2022-11-23 02:18:30,497 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 983 flow [2022-11-23 02:18:30,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 248.1875) internal successors, (3971), 16 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:30,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:30,499 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:30,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 02:18:30,499 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:30,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:30,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1183870685, now seen corresponding path program 1 times [2022-11-23 02:18:30,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:30,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518429435] [2022-11-23 02:18:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:30,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:31,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:31,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518429435] [2022-11-23 02:18:31,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518429435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:31,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:31,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 02:18:31,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154959375] [2022-11-23 02:18:31,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:31,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 02:18:31,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:31,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 02:18:31,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:18:32,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 586 [2022-11-23 02:18:32,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 983 flow. Second operand has 12 states, 12 states have (on average 261.5833333333333) internal successors, (3139), 12 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:32,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:32,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 586 [2022-11-23 02:18:32,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:34,457 INFO L130 PetriNetUnfolder]: 6498/11240 cut-off events. [2022-11-23 02:18:34,458 INFO L131 PetriNetUnfolder]: For 11172/11172 co-relation queries the response was YES. [2022-11-23 02:18:34,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34519 conditions, 11240 events. 6498/11240 cut-off events. For 11172/11172 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 69888 event pairs, 1659 based on Foata normal form. 0/9206 useless extension candidates. Maximal degree in co-relation 22577. Up to 7167 conditions per place. [2022-11-23 02:18:34,568 INFO L137 encePairwiseOnDemand]: 573/586 looper letters, 163 selfloop transitions, 35 changer transitions 3/207 dead transitions. [2022-11-23 02:18:34,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 207 transitions, 1700 flow [2022-11-23 02:18:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:18:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-23 02:18:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2210 transitions. [2022-11-23 02:18:34,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4714163822525597 [2022-11-23 02:18:34,573 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2210 transitions. [2022-11-23 02:18:34,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2210 transitions. [2022-11-23 02:18:34,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:34,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2210 transitions. [2022-11-23 02:18:34,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 276.25) internal successors, (2210), 8 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:34,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 586.0) internal successors, (5274), 9 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:34,584 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 586.0) internal successors, (5274), 9 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:34,584 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 983 flow. Second operand 8 states and 2210 transitions. [2022-11-23 02:18:34,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 207 transitions, 1700 flow [2022-11-23 02:18:34,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 207 transitions, 1627 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-11-23 02:18:34,646 INFO L231 Difference]: Finished difference. Result has 159 places, 134 transitions, 1062 flow [2022-11-23 02:18:34,646 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1062, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2022-11-23 02:18:34,646 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 85 predicate places. [2022-11-23 02:18:34,646 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 1062 flow [2022-11-23 02:18:34,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 261.5833333333333) internal successors, (3139), 12 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:34,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:34,647 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:34,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 02:18:34,647 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:34,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:34,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1922296581, now seen corresponding path program 3 times [2022-11-23 02:18:34,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:34,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409892519] [2022-11-23 02:18:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:34,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:36,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:36,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409892519] [2022-11-23 02:18:36,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409892519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:36,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:36,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 02:18:36,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826043067] [2022-11-23 02:18:36,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:36,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 02:18:36,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:36,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 02:18:36,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:18:37,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 586 [2022-11-23 02:18:37,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 1062 flow. Second operand has 16 states, 16 states have (on average 248.1875) internal successors, (3971), 16 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:37,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:37,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 586 [2022-11-23 02:18:37,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:40,224 INFO L130 PetriNetUnfolder]: 6688/11568 cut-off events. [2022-11-23 02:18:40,224 INFO L131 PetriNetUnfolder]: For 15573/15573 co-relation queries the response was YES. [2022-11-23 02:18:40,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36320 conditions, 11568 events. 6688/11568 cut-off events. For 15573/15573 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 72411 event pairs, 1936 based on Foata normal form. 34/9528 useless extension candidates. Maximal degree in co-relation 24270. Up to 7503 conditions per place. [2022-11-23 02:18:40,342 INFO L137 encePairwiseOnDemand]: 569/586 looper letters, 224 selfloop transitions, 54 changer transitions 3/287 dead transitions. [2022-11-23 02:18:40,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 287 transitions, 2310 flow [2022-11-23 02:18:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 02:18:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 02:18:40,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4140 transitions. [2022-11-23 02:18:40,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4415529010238908 [2022-11-23 02:18:40,350 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4140 transitions. [2022-11-23 02:18:40,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4140 transitions. [2022-11-23 02:18:40,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:40,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4140 transitions. [2022-11-23 02:18:40,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 258.75) internal successors, (4140), 16 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:40,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 586.0) internal successors, (9962), 17 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:40,369 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 586.0) internal successors, (9962), 17 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:40,369 INFO L175 Difference]: Start difference. First operand has 159 places, 134 transitions, 1062 flow. Second operand 16 states and 4140 transitions. [2022-11-23 02:18:40,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 287 transitions, 2310 flow [2022-11-23 02:18:40,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 287 transitions, 2285 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-23 02:18:40,438 INFO L231 Difference]: Finished difference. Result has 173 places, 138 transitions, 1198 flow [2022-11-23 02:18:40,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1198, PETRI_PLACES=173, PETRI_TRANSITIONS=138} [2022-11-23 02:18:40,439 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 99 predicate places. [2022-11-23 02:18:40,440 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 138 transitions, 1198 flow [2022-11-23 02:18:40,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 248.1875) internal successors, (3971), 16 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:40,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:40,441 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:40,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 02:18:40,441 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:40,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:40,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2134627753, now seen corresponding path program 4 times [2022-11-23 02:18:40,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:40,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736174441] [2022-11-23 02:18:40,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:40,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:41,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:41,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:41,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736174441] [2022-11-23 02:18:41,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736174441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:41,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:41,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-23 02:18:41,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290293563] [2022-11-23 02:18:41,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:41,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 02:18:41,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:41,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 02:18:41,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:18:43,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 586 [2022-11-23 02:18:43,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 138 transitions, 1198 flow. Second operand has 17 states, 17 states have (on average 248.11764705882354) internal successors, (4218), 17 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:43,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:43,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 586 [2022-11-23 02:18:43,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:46,972 INFO L130 PetriNetUnfolder]: 6688/11570 cut-off events. [2022-11-23 02:18:46,972 INFO L131 PetriNetUnfolder]: For 16293/16293 co-relation queries the response was YES. [2022-11-23 02:18:47,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37061 conditions, 11570 events. 6688/11570 cut-off events. For 16293/16293 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 72601 event pairs, 1943 based on Foata normal form. 34/9530 useless extension candidates. Maximal degree in co-relation 24659. Up to 7333 conditions per place. [2022-11-23 02:18:47,113 INFO L137 encePairwiseOnDemand]: 569/586 looper letters, 224 selfloop transitions, 54 changer transitions 3/287 dead transitions. [2022-11-23 02:18:47,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 287 transitions, 2417 flow [2022-11-23 02:18:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 02:18:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 02:18:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4139 transitions. [2022-11-23 02:18:47,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4414462457337884 [2022-11-23 02:18:47,120 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4139 transitions. [2022-11-23 02:18:47,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4139 transitions. [2022-11-23 02:18:47,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:47,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4139 transitions. [2022-11-23 02:18:47,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 258.6875) internal successors, (4139), 16 states have internal predecessors, (4139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:47,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 586.0) internal successors, (9962), 17 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:47,133 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 586.0) internal successors, (9962), 17 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:47,133 INFO L175 Difference]: Start difference. First operand has 173 places, 138 transitions, 1198 flow. Second operand 16 states and 4139 transitions. [2022-11-23 02:18:47,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 287 transitions, 2417 flow [2022-11-23 02:18:47,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 287 transitions, 2323 flow, removed 4 selfloop flow, removed 11 redundant places. [2022-11-23 02:18:47,212 INFO L231 Difference]: Finished difference. Result has 178 places, 138 transitions, 1223 flow [2022-11-23 02:18:47,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1223, PETRI_PLACES=178, PETRI_TRANSITIONS=138} [2022-11-23 02:18:47,213 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 104 predicate places. [2022-11-23 02:18:47,213 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 138 transitions, 1223 flow [2022-11-23 02:18:47,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 248.11764705882354) internal successors, (4218), 17 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:47,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:47,214 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:47,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 02:18:47,214 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:47,215 INFO L85 PathProgramCache]: Analyzing trace with hash 999279899, now seen corresponding path program 1 times [2022-11-23 02:18:47,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:47,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109382027] [2022-11-23 02:18:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:47,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:47,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:47,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109382027] [2022-11-23 02:18:47,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109382027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:47,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:47,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:18:47,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324801071] [2022-11-23 02:18:47,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:47,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:18:47,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:47,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:18:47,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:18:47,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 586 [2022-11-23 02:18:47,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 138 transitions, 1223 flow. Second operand has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:47,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:47,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 586 [2022-11-23 02:18:47,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:49,002 INFO L130 PetriNetUnfolder]: 5856/10320 cut-off events. [2022-11-23 02:18:49,002 INFO L131 PetriNetUnfolder]: For 18128/18128 co-relation queries the response was YES. [2022-11-23 02:18:49,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33824 conditions, 10320 events. 5856/10320 cut-off events. For 18128/18128 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 64927 event pairs, 2130 based on Foata normal form. 0/8720 useless extension candidates. Maximal degree in co-relation 22024. Up to 8242 conditions per place. [2022-11-23 02:18:49,121 INFO L137 encePairwiseOnDemand]: 583/586 looper letters, 134 selfloop transitions, 1 changer transitions 0/147 dead transitions. [2022-11-23 02:18:49,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 147 transitions, 1539 flow [2022-11-23 02:18:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:18:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:18:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 926 transitions. [2022-11-23 02:18:49,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5267349260523322 [2022-11-23 02:18:49,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 926 transitions. [2022-11-23 02:18:49,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 926 transitions. [2022-11-23 02:18:49,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:49,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 926 transitions. [2022-11-23 02:18:49,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:49,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:49,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:49,127 INFO L175 Difference]: Start difference. First operand has 178 places, 138 transitions, 1223 flow. Second operand 3 states and 926 transitions. [2022-11-23 02:18:49,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 147 transitions, 1539 flow [2022-11-23 02:18:49,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 147 transitions, 1458 flow, removed 1 selfloop flow, removed 12 redundant places. [2022-11-23 02:18:49,378 INFO L231 Difference]: Finished difference. Result has 166 places, 136 transitions, 1136 flow [2022-11-23 02:18:49,378 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1136, PETRI_PLACES=166, PETRI_TRANSITIONS=136} [2022-11-23 02:18:49,379 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 92 predicate places. [2022-11-23 02:18:49,379 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 136 transitions, 1136 flow [2022-11-23 02:18:49,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:49,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:49,379 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:49,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 02:18:49,380 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash 999280003, now seen corresponding path program 1 times [2022-11-23 02:18:49,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:49,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096514387] [2022-11-23 02:18:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:49,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:18:49,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:49,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096514387] [2022-11-23 02:18:49,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096514387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:49,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:49,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:18:49,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101508509] [2022-11-23 02:18:49,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:49,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:18:49,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:49,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:18:49,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:18:49,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 586 [2022-11-23 02:18:49,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 136 transitions, 1136 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:49,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:49,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 586 [2022-11-23 02:18:49,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:50,920 INFO L130 PetriNetUnfolder]: 5350/9472 cut-off events. [2022-11-23 02:18:50,920 INFO L131 PetriNetUnfolder]: For 16050/16050 co-relation queries the response was YES. [2022-11-23 02:18:51,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30875 conditions, 9472 events. 5350/9472 cut-off events. For 16050/16050 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 58683 event pairs, 1865 based on Foata normal form. 192/8298 useless extension candidates. Maximal degree in co-relation 18838. Up to 6334 conditions per place. [2022-11-23 02:18:51,035 INFO L137 encePairwiseOnDemand]: 580/586 looper letters, 146 selfloop transitions, 5 changer transitions 0/163 dead transitions. [2022-11-23 02:18:51,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 163 transitions, 1540 flow [2022-11-23 02:18:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:18:51,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:18:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 938 transitions. [2022-11-23 02:18:51,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5335608646188851 [2022-11-23 02:18:51,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 938 transitions. [2022-11-23 02:18:51,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 938 transitions. [2022-11-23 02:18:51,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:51,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 938 transitions. [2022-11-23 02:18:51,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:51,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:51,040 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:51,040 INFO L175 Difference]: Start difference. First operand has 166 places, 136 transitions, 1136 flow. Second operand 3 states and 938 transitions. [2022-11-23 02:18:51,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 163 transitions, 1540 flow [2022-11-23 02:18:51,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 163 transitions, 1539 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:18:51,108 INFO L231 Difference]: Finished difference. Result has 166 places, 136 transitions, 1150 flow [2022-11-23 02:18:51,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1150, PETRI_PLACES=166, PETRI_TRANSITIONS=136} [2022-11-23 02:18:51,109 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 92 predicate places. [2022-11-23 02:18:51,109 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 136 transitions, 1150 flow [2022-11-23 02:18:51,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:51,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:51,109 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:51,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 02:18:51,109 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1299320454, now seen corresponding path program 1 times [2022-11-23 02:18:51,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:51,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640460143] [2022-11-23 02:18:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:51,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:51,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:51,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640460143] [2022-11-23 02:18:51,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640460143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:51,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:51,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:18:51,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482592668] [2022-11-23 02:18:51,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:51,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:18:51,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:51,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:18:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:18:52,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 586 [2022-11-23 02:18:52,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 136 transitions, 1150 flow. Second operand has 10 states, 10 states have (on average 260.1) internal successors, (2601), 10 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:52,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:52,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 586 [2022-11-23 02:18:52,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:18:55,737 INFO L130 PetriNetUnfolder]: 9270/16053 cut-off events. [2022-11-23 02:18:55,738 INFO L131 PetriNetUnfolder]: For 21779/21779 co-relation queries the response was YES. [2022-11-23 02:18:56,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51251 conditions, 16053 events. 9270/16053 cut-off events. For 21779/21779 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 104618 event pairs, 2829 based on Foata normal form. 0/13733 useless extension candidates. Maximal degree in co-relation 25122. Up to 7129 conditions per place. [2022-11-23 02:18:56,209 INFO L137 encePairwiseOnDemand]: 569/586 looper letters, 229 selfloop transitions, 60 changer transitions 0/295 dead transitions. [2022-11-23 02:18:56,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 295 transitions, 2445 flow [2022-11-23 02:18:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:18:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-23 02:18:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3033 transitions. [2022-11-23 02:18:56,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4705243561898852 [2022-11-23 02:18:56,214 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3033 transitions. [2022-11-23 02:18:56,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3033 transitions. [2022-11-23 02:18:56,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:18:56,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3033 transitions. [2022-11-23 02:18:56,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 275.72727272727275) internal successors, (3033), 11 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:56,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 586.0) internal successors, (7032), 12 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:56,228 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 586.0) internal successors, (7032), 12 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:56,228 INFO L175 Difference]: Start difference. First operand has 166 places, 136 transitions, 1150 flow. Second operand 11 states and 3033 transitions. [2022-11-23 02:18:56,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 295 transitions, 2445 flow [2022-11-23 02:18:56,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 295 transitions, 2431 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:18:56,363 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 1588 flow [2022-11-23 02:18:56,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1588, PETRI_PLACES=179, PETRI_TRANSITIONS=166} [2022-11-23 02:18:56,365 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 105 predicate places. [2022-11-23 02:18:56,365 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 1588 flow [2022-11-23 02:18:56,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 260.1) internal successors, (2601), 10 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:56,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:18:56,366 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:56,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 02:18:56,366 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:18:56,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:56,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1299320452, now seen corresponding path program 1 times [2022-11-23 02:18:56,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:56,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870636813] [2022-11-23 02:18:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:56,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:57,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:57,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870636813] [2022-11-23 02:18:57,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870636813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:57,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:57,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 02:18:57,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351410186] [2022-11-23 02:18:57,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:57,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:18:57,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:57,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:18:57,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:18:58,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 586 [2022-11-23 02:18:58,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 166 transitions, 1588 flow. Second operand has 13 states, 13 states have (on average 259.61538461538464) internal successors, (3375), 13 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:58,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:18:58,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 586 [2022-11-23 02:18:58,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:19:02,364 INFO L130 PetriNetUnfolder]: 9865/17122 cut-off events. [2022-11-23 02:19:02,364 INFO L131 PetriNetUnfolder]: For 31845/31845 co-relation queries the response was YES. [2022-11-23 02:19:02,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58300 conditions, 17122 events. 9865/17122 cut-off events. For 31845/31845 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 112812 event pairs, 6986 based on Foata normal form. 72/14870 useless extension candidates. Maximal degree in co-relation 45326. Up to 14860 conditions per place. [2022-11-23 02:19:02,538 INFO L137 encePairwiseOnDemand]: 572/586 looper letters, 204 selfloop transitions, 32 changer transitions 3/245 dead transitions. [2022-11-23 02:19:02,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 245 transitions, 2484 flow [2022-11-23 02:19:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 02:19:02,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-23 02:19:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3491 transitions. [2022-11-23 02:19:02,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4582567603045419 [2022-11-23 02:19:02,543 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3491 transitions. [2022-11-23 02:19:02,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3491 transitions. [2022-11-23 02:19:02,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:19:02,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3491 transitions. [2022-11-23 02:19:02,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 268.53846153846155) internal successors, (3491), 13 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:02,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 586.0) internal successors, (8204), 14 states have internal predecessors, (8204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:02,560 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 586.0) internal successors, (8204), 14 states have internal predecessors, (8204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:02,560 INFO L175 Difference]: Start difference. First operand has 179 places, 166 transitions, 1588 flow. Second operand 13 states and 3491 transitions. [2022-11-23 02:19:02,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 245 transitions, 2484 flow [2022-11-23 02:19:02,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 245 transitions, 2447 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-11-23 02:19:02,722 INFO L231 Difference]: Finished difference. Result has 192 places, 170 transitions, 1723 flow [2022-11-23 02:19:02,722 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1723, PETRI_PLACES=192, PETRI_TRANSITIONS=170} [2022-11-23 02:19:02,723 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 118 predicate places. [2022-11-23 02:19:02,723 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 170 transitions, 1723 flow [2022-11-23 02:19:02,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 259.61538461538464) internal successors, (3375), 13 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:02,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:19:02,723 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:02,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-23 02:19:02,724 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:19:02,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:02,724 INFO L85 PathProgramCache]: Analyzing trace with hash -334774587, now seen corresponding path program 1 times [2022-11-23 02:19:02,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:02,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034297181] [2022-11-23 02:19:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:02,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:04,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:04,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034297181] [2022-11-23 02:19:04,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034297181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:04,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:19:04,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 02:19:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569662780] [2022-11-23 02:19:04,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:04,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 02:19:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:04,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 02:19:04,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:19:05,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 586 [2022-11-23 02:19:05,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 170 transitions, 1723 flow. Second operand has 14 states, 14 states have (on average 252.57142857142858) internal successors, (3536), 14 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:05,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:19:05,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 586 [2022-11-23 02:19:05,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:19:09,010 INFO L130 PetriNetUnfolder]: 8606/14895 cut-off events. [2022-11-23 02:19:09,011 INFO L131 PetriNetUnfolder]: For 32063/32063 co-relation queries the response was YES. [2022-11-23 02:19:09,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52059 conditions, 14895 events. 8606/14895 cut-off events. For 32063/32063 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 93856 event pairs, 4125 based on Foata normal form. 68/12923 useless extension candidates. Maximal degree in co-relation 44815. Up to 10232 conditions per place. [2022-11-23 02:19:09,203 INFO L137 encePairwiseOnDemand]: 572/586 looper letters, 224 selfloop transitions, 44 changer transitions 3/277 dead transitions. [2022-11-23 02:19:09,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 277 transitions, 2717 flow [2022-11-23 02:19:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:19:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 02:19:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3168 transitions. [2022-11-23 02:19:09,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45051194539249145 [2022-11-23 02:19:09,209 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3168 transitions. [2022-11-23 02:19:09,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3168 transitions. [2022-11-23 02:19:09,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:19:09,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3168 transitions. [2022-11-23 02:19:09,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 264.0) internal successors, (3168), 12 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:09,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:09,232 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:09,233 INFO L175 Difference]: Start difference. First operand has 192 places, 170 transitions, 1723 flow. Second operand 12 states and 3168 transitions. [2022-11-23 02:19:09,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 277 transitions, 2717 flow [2022-11-23 02:19:09,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 277 transitions, 2668 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-23 02:19:09,413 INFO L231 Difference]: Finished difference. Result has 197 places, 164 transitions, 1722 flow [2022-11-23 02:19:09,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1722, PETRI_PLACES=197, PETRI_TRANSITIONS=164} [2022-11-23 02:19:09,414 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 123 predicate places. [2022-11-23 02:19:09,414 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 164 transitions, 1722 flow [2022-11-23 02:19:09,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 252.57142857142858) internal successors, (3536), 14 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:09,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:19:09,415 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:09,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-23 02:19:09,415 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:19:09,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:09,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1142794677, now seen corresponding path program 2 times [2022-11-23 02:19:09,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:09,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448038395] [2022-11-23 02:19:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:09,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:11,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:11,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448038395] [2022-11-23 02:19:11,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448038395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:11,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:19:11,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 02:19:11,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066109675] [2022-11-23 02:19:11,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:11,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 02:19:11,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:11,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 02:19:11,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:19:13,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 586 [2022-11-23 02:19:13,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 164 transitions, 1722 flow. Second operand has 14 states, 14 states have (on average 256.57142857142856) internal successors, (3592), 14 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:13,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:19:13,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 586 [2022-11-23 02:19:13,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:19:17,901 INFO L130 PetriNetUnfolder]: 10130/17486 cut-off events. [2022-11-23 02:19:17,901 INFO L131 PetriNetUnfolder]: For 41072/41072 co-relation queries the response was YES. [2022-11-23 02:19:18,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61626 conditions, 17486 events. 10130/17486 cut-off events. For 41072/41072 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 113939 event pairs, 2134 based on Foata normal form. 142/15240 useless extension candidates. Maximal degree in co-relation 52804. Up to 9496 conditions per place. [2022-11-23 02:19:18,109 INFO L137 encePairwiseOnDemand]: 567/586 looper letters, 246 selfloop transitions, 62 changer transitions 0/314 dead transitions. [2022-11-23 02:19:18,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 314 transitions, 3082 flow [2022-11-23 02:19:18,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:19:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 02:19:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3245 transitions. [2022-11-23 02:19:18,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46146188850967007 [2022-11-23 02:19:18,116 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3245 transitions. [2022-11-23 02:19:18,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3245 transitions. [2022-11-23 02:19:18,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:19:18,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3245 transitions. [2022-11-23 02:19:18,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.4166666666667) internal successors, (3245), 12 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:18,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:18,129 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:18,130 INFO L175 Difference]: Start difference. First operand has 197 places, 164 transitions, 1722 flow. Second operand 12 states and 3245 transitions. [2022-11-23 02:19:18,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 314 transitions, 3082 flow [2022-11-23 02:19:18,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 314 transitions, 2981 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-11-23 02:19:18,345 INFO L231 Difference]: Finished difference. Result has 200 places, 179 transitions, 1972 flow [2022-11-23 02:19:18,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1972, PETRI_PLACES=200, PETRI_TRANSITIONS=179} [2022-11-23 02:19:18,346 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 126 predicate places. [2022-11-23 02:19:18,346 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 179 transitions, 1972 flow [2022-11-23 02:19:18,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 256.57142857142856) internal successors, (3592), 14 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:18,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:19:18,347 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:18,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-23 02:19:18,347 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:19:18,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:18,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1142794675, now seen corresponding path program 1 times [2022-11-23 02:19:18,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:18,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020940813] [2022-11-23 02:19:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:18,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:19,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:19,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020940813] [2022-11-23 02:19:19,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020940813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:19,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:19:19,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:19:19,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926979518] [2022-11-23 02:19:19,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:19,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:19:19,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:19,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:19:19,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:19:20,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 586 [2022-11-23 02:19:20,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 179 transitions, 1972 flow. Second operand has 11 states, 11 states have (on average 257.0) internal successors, (2827), 11 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:20,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:19:20,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 586 [2022-11-23 02:19:20,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:19:25,265 INFO L130 PetriNetUnfolder]: 12085/20856 cut-off events. [2022-11-23 02:19:25,265 INFO L131 PetriNetUnfolder]: For 53365/53365 co-relation queries the response was YES. [2022-11-23 02:19:25,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75095 conditions, 20856 events. 12085/20856 cut-off events. For 53365/53365 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 139819 event pairs, 4504 based on Foata normal form. 139/18106 useless extension candidates. Maximal degree in co-relation 66126. Up to 7441 conditions per place. [2022-11-23 02:19:25,597 INFO L137 encePairwiseOnDemand]: 570/586 looper letters, 244 selfloop transitions, 76 changer transitions 0/326 dead transitions. [2022-11-23 02:19:25,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 326 transitions, 3349 flow [2022-11-23 02:19:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:19:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 02:19:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2483 transitions. [2022-11-23 02:19:25,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4708001516875237 [2022-11-23 02:19:25,602 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2483 transitions. [2022-11-23 02:19:25,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2483 transitions. [2022-11-23 02:19:25,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:19:25,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2483 transitions. [2022-11-23 02:19:25,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 275.8888888888889) internal successors, (2483), 9 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:25,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 586.0) internal successors, (5860), 10 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:25,612 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 586.0) internal successors, (5860), 10 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:25,612 INFO L175 Difference]: Start difference. First operand has 200 places, 179 transitions, 1972 flow. Second operand 9 states and 2483 transitions. [2022-11-23 02:19:25,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 326 transitions, 3349 flow [2022-11-23 02:19:26,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 326 transitions, 3270 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-11-23 02:19:26,067 INFO L231 Difference]: Finished difference. Result has 204 places, 199 transitions, 2397 flow [2022-11-23 02:19:26,068 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2397, PETRI_PLACES=204, PETRI_TRANSITIONS=199} [2022-11-23 02:19:26,068 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 130 predicate places. [2022-11-23 02:19:26,068 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 199 transitions, 2397 flow [2022-11-23 02:19:26,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 257.0) internal successors, (2827), 11 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:26,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:19:26,069 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:26,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-23 02:19:26,070 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:19:26,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1624230651, now seen corresponding path program 3 times [2022-11-23 02:19:26,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:26,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656954481] [2022-11-23 02:19:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:26,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:27,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:27,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656954481] [2022-11-23 02:19:27,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656954481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:27,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:19:27,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 02:19:27,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779919518] [2022-11-23 02:19:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:27,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 02:19:27,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 02:19:27,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:19:30,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 586 [2022-11-23 02:19:30,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 199 transitions, 2397 flow. Second operand has 14 states, 14 states have (on average 257.57142857142856) internal successors, (3606), 14 states have internal predecessors, (3606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:30,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:19:30,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 586 [2022-11-23 02:19:30,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:19:35,450 INFO L130 PetriNetUnfolder]: 9807/16948 cut-off events. [2022-11-23 02:19:35,450 INFO L131 PetriNetUnfolder]: For 58532/58536 co-relation queries the response was YES. [2022-11-23 02:19:35,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64795 conditions, 16948 events. 9807/16948 cut-off events. For 58532/58536 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 110363 event pairs, 2979 based on Foata normal form. 136/14745 useless extension candidates. Maximal degree in co-relation 55524. Up to 10222 conditions per place. [2022-11-23 02:19:35,656 INFO L137 encePairwiseOnDemand]: 573/586 looper letters, 236 selfloop transitions, 45 changer transitions 3/290 dead transitions. [2022-11-23 02:19:35,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 290 transitions, 3190 flow [2022-11-23 02:19:35,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:19:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 02:19:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3224 transitions. [2022-11-23 02:19:35,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45847554038680316 [2022-11-23 02:19:35,661 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3224 transitions. [2022-11-23 02:19:35,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3224 transitions. [2022-11-23 02:19:35,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:19:35,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3224 transitions. [2022-11-23 02:19:35,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 268.6666666666667) internal successors, (3224), 12 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:35,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:35,676 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:35,676 INFO L175 Difference]: Start difference. First operand has 204 places, 199 transitions, 2397 flow. Second operand 12 states and 3224 transitions. [2022-11-23 02:19:35,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 290 transitions, 3190 flow [2022-11-23 02:19:35,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 290 transitions, 3119 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-11-23 02:19:35,980 INFO L231 Difference]: Finished difference. Result has 210 places, 181 transitions, 2169 flow [2022-11-23 02:19:35,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2169, PETRI_PLACES=210, PETRI_TRANSITIONS=181} [2022-11-23 02:19:35,981 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 136 predicate places. [2022-11-23 02:19:35,981 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 181 transitions, 2169 flow [2022-11-23 02:19:35,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 257.57142857142856) internal successors, (3606), 14 states have internal predecessors, (3606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:35,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:19:35,982 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:35,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-23 02:19:35,982 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:19:35,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:35,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2051442890, now seen corresponding path program 1 times [2022-11-23 02:19:35,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:35,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143126314] [2022-11-23 02:19:35,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:35,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:36,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:36,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143126314] [2022-11-23 02:19:36,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143126314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:36,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:19:36,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:19:36,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678682957] [2022-11-23 02:19:36,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:36,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:19:36,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:36,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:19:36,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:19:36,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 586 [2022-11-23 02:19:36,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 181 transitions, 2169 flow. Second operand has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:36,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:19:36,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 586 [2022-11-23 02:19:36,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:19:38,279 INFO L130 PetriNetUnfolder]: 4543/8041 cut-off events. [2022-11-23 02:19:38,279 INFO L131 PetriNetUnfolder]: For 38630/38630 co-relation queries the response was YES. [2022-11-23 02:19:38,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33838 conditions, 8041 events. 4543/8041 cut-off events. For 38630/38630 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 48520 event pairs, 3223 based on Foata normal form. 94/7137 useless extension candidates. Maximal degree in co-relation 31785. Up to 6156 conditions per place. [2022-11-23 02:19:38,370 INFO L137 encePairwiseOnDemand]: 583/586 looper letters, 144 selfloop transitions, 2 changer transitions 4/159 dead transitions. [2022-11-23 02:19:38,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 159 transitions, 2101 flow [2022-11-23 02:19:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:19:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:19:38,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 934 transitions. [2022-11-23 02:19:38,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5312855517633674 [2022-11-23 02:19:38,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 934 transitions. [2022-11-23 02:19:38,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 934 transitions. [2022-11-23 02:19:38,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:19:38,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 934 transitions. [2022-11-23 02:19:38,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:38,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:38,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:38,378 INFO L175 Difference]: Start difference. First operand has 210 places, 181 transitions, 2169 flow. Second operand 3 states and 934 transitions. [2022-11-23 02:19:38,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 159 transitions, 2101 flow [2022-11-23 02:19:38,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 159 transitions, 1803 flow, removed 15 selfloop flow, removed 24 redundant places. [2022-11-23 02:19:38,670 INFO L231 Difference]: Finished difference. Result has 187 places, 141 transitions, 1427 flow [2022-11-23 02:19:38,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1427, PETRI_PLACES=187, PETRI_TRANSITIONS=141} [2022-11-23 02:19:38,671 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 113 predicate places. [2022-11-23 02:19:38,671 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 141 transitions, 1427 flow [2022-11-23 02:19:38,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:38,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:19:38,672 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:38,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-23 02:19:38,672 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:19:38,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:38,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1584000332, now seen corresponding path program 1 times [2022-11-23 02:19:38,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:38,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994009231] [2022-11-23 02:19:38,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:38,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:38,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:38,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994009231] [2022-11-23 02:19:38,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994009231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:38,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:19:38,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:19:38,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806575943] [2022-11-23 02:19:38,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:38,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:19:38,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:38,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:19:38,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:19:38,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 586 [2022-11-23 02:19:38,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 141 transitions, 1427 flow. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:38,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:19:38,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 586 [2022-11-23 02:19:38,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:19:40,284 INFO L130 PetriNetUnfolder]: 2909/5429 cut-off events. [2022-11-23 02:19:40,284 INFO L131 PetriNetUnfolder]: For 15706/15706 co-relation queries the response was YES. [2022-11-23 02:19:40,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21215 conditions, 5429 events. 2909/5429 cut-off events. For 15706/15706 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 31200 event pairs, 683 based on Foata normal form. 546/5575 useless extension candidates. Maximal degree in co-relation 16933. Up to 4068 conditions per place. [2022-11-23 02:19:40,329 INFO L137 encePairwiseOnDemand]: 578/586 looper letters, 132 selfloop transitions, 13 changer transitions 0/154 dead transitions. [2022-11-23 02:19:40,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 154 transitions, 1789 flow [2022-11-23 02:19:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:19:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:19:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 925 transitions. [2022-11-23 02:19:40,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5261660978384528 [2022-11-23 02:19:40,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 925 transitions. [2022-11-23 02:19:40,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 925 transitions. [2022-11-23 02:19:40,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:19:40,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 925 transitions. [2022-11-23 02:19:40,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:40,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:40,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:40,334 INFO L175 Difference]: Start difference. First operand has 187 places, 141 transitions, 1427 flow. Second operand 3 states and 925 transitions. [2022-11-23 02:19:40,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 154 transitions, 1789 flow [2022-11-23 02:19:40,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 154 transitions, 1764 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 02:19:40,424 INFO L231 Difference]: Finished difference. Result has 186 places, 141 transitions, 1428 flow [2022-11-23 02:19:40,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1428, PETRI_PLACES=186, PETRI_TRANSITIONS=141} [2022-11-23 02:19:40,424 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 112 predicate places. [2022-11-23 02:19:40,425 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 141 transitions, 1428 flow [2022-11-23 02:19:40,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:40,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:19:40,425 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:40,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-23 02:19:40,426 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:19:40,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:40,426 INFO L85 PathProgramCache]: Analyzing trace with hash -277185131, now seen corresponding path program 1 times [2022-11-23 02:19:40,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:40,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672501157] [2022-11-23 02:19:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:40,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:41,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:41,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672501157] [2022-11-23 02:19:41,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672501157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:41,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:19:41,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 02:19:41,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997166474] [2022-11-23 02:19:41,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:41,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 02:19:41,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:41,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 02:19:41,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:19:43,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 586 [2022-11-23 02:19:43,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 141 transitions, 1428 flow. Second operand has 14 states, 14 states have (on average 252.14285714285714) internal successors, (3530), 14 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:43,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:19:43,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 586 [2022-11-23 02:19:43,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:19:45,485 INFO L130 PetriNetUnfolder]: 3522/6693 cut-off events. [2022-11-23 02:19:45,485 INFO L131 PetriNetUnfolder]: For 16292/16292 co-relation queries the response was YES. [2022-11-23 02:19:45,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25777 conditions, 6693 events. 3522/6693 cut-off events. For 16292/16292 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 41235 event pairs, 1639 based on Foata normal form. 0/6181 useless extension candidates. Maximal degree in co-relation 18234. Up to 4164 conditions per place. [2022-11-23 02:19:45,550 INFO L137 encePairwiseOnDemand]: 572/586 looper letters, 210 selfloop transitions, 40 changer transitions 13/268 dead transitions. [2022-11-23 02:19:45,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 268 transitions, 2575 flow [2022-11-23 02:19:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 02:19:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-23 02:19:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4432 transitions. [2022-11-23 02:19:45,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44489058422003613 [2022-11-23 02:19:45,557 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4432 transitions. [2022-11-23 02:19:45,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4432 transitions. [2022-11-23 02:19:45,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:19:45,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4432 transitions. [2022-11-23 02:19:45,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 260.70588235294116) internal successors, (4432), 17 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:45,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 586.0) internal successors, (10548), 18 states have internal predecessors, (10548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:45,576 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 586.0) internal successors, (10548), 18 states have internal predecessors, (10548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:45,576 INFO L175 Difference]: Start difference. First operand has 186 places, 141 transitions, 1428 flow. Second operand 17 states and 4432 transitions. [2022-11-23 02:19:45,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 268 transitions, 2575 flow [2022-11-23 02:19:45,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 268 transitions, 2537 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:19:45,718 INFO L231 Difference]: Finished difference. Result has 203 places, 145 transitions, 1527 flow [2022-11-23 02:19:45,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1527, PETRI_PLACES=203, PETRI_TRANSITIONS=145} [2022-11-23 02:19:45,719 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 129 predicate places. [2022-11-23 02:19:45,719 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 145 transitions, 1527 flow [2022-11-23 02:19:45,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 252.14285714285714) internal successors, (3530), 14 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:45,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:19:45,720 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:45,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-23 02:19:45,720 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:19:45,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:45,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1244247645, now seen corresponding path program 1 times [2022-11-23 02:19:45,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:45,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354383957] [2022-11-23 02:19:45,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:45,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:46,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:46,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354383957] [2022-11-23 02:19:46,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354383957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:46,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:19:46,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:19:46,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989015952] [2022-11-23 02:19:46,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:46,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:19:46,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:46,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:19:46,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:19:47,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 586 [2022-11-23 02:19:47,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 145 transitions, 1527 flow. Second operand has 11 states, 11 states have (on average 261.72727272727275) internal successors, (2879), 11 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:47,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:19:47,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 586 [2022-11-23 02:19:47,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:19:49,047 INFO L130 PetriNetUnfolder]: 4026/7649 cut-off events. [2022-11-23 02:19:49,047 INFO L131 PetriNetUnfolder]: For 18674/18674 co-relation queries the response was YES. [2022-11-23 02:19:49,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28176 conditions, 7649 events. 4026/7649 cut-off events. For 18674/18674 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 48229 event pairs, 1191 based on Foata normal form. 0/7110 useless extension candidates. Maximal degree in co-relation 27278. Up to 2065 conditions per place. [2022-11-23 02:19:49,113 INFO L137 encePairwiseOnDemand]: 574/586 looper letters, 181 selfloop transitions, 39 changer transitions 11/236 dead transitions. [2022-11-23 02:19:49,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 236 transitions, 2398 flow [2022-11-23 02:19:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 02:19:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-23 02:19:49,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3513 transitions. [2022-11-23 02:19:49,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4611446573903912 [2022-11-23 02:19:49,121 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3513 transitions. [2022-11-23 02:19:49,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3513 transitions. [2022-11-23 02:19:49,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:19:49,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3513 transitions. [2022-11-23 02:19:49,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 270.2307692307692) internal successors, (3513), 13 states have internal predecessors, (3513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:49,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 586.0) internal successors, (8204), 14 states have internal predecessors, (8204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:49,132 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 586.0) internal successors, (8204), 14 states have internal predecessors, (8204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:49,132 INFO L175 Difference]: Start difference. First operand has 203 places, 145 transitions, 1527 flow. Second operand 13 states and 3513 transitions. [2022-11-23 02:19:49,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 236 transitions, 2398 flow [2022-11-23 02:19:49,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 236 transitions, 2288 flow, removed 9 selfloop flow, removed 12 redundant places. [2022-11-23 02:19:49,236 INFO L231 Difference]: Finished difference. Result has 205 places, 147 transitions, 1531 flow [2022-11-23 02:19:49,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1531, PETRI_PLACES=205, PETRI_TRANSITIONS=147} [2022-11-23 02:19:49,237 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 131 predicate places. [2022-11-23 02:19:49,237 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 147 transitions, 1531 flow [2022-11-23 02:19:49,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 261.72727272727275) internal successors, (2879), 11 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:49,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:19:49,237 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:19:49,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-23 02:19:49,238 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:19:49,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:19:49,238 INFO L85 PathProgramCache]: Analyzing trace with hash -704504755, now seen corresponding path program 2 times [2022-11-23 02:19:49,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:19:49,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824985617] [2022-11-23 02:19:49,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:19:49,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:19:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:19:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:19:52,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:19:52,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824985617] [2022-11-23 02:19:52,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824985617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:19:52,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:19:52,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 02:19:52,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173439034] [2022-11-23 02:19:52,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:19:52,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 02:19:52,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:19:52,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 02:19:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:19:58,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 586 [2022-11-23 02:19:58,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 147 transitions, 1531 flow. Second operand has 20 states, 20 states have (on average 242.5) internal successors, (4850), 20 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:19:58,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:19:58,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 586 [2022-11-23 02:19:58,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:20:02,536 INFO L130 PetriNetUnfolder]: 4276/8168 cut-off events. [2022-11-23 02:20:02,536 INFO L131 PetriNetUnfolder]: For 19696/19696 co-relation queries the response was YES. [2022-11-23 02:20:02,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29860 conditions, 8168 events. 4276/8168 cut-off events. For 19696/19696 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 52740 event pairs, 1518 based on Foata normal form. 20/7634 useless extension candidates. Maximal degree in co-relation 28962. Up to 3537 conditions per place. [2022-11-23 02:20:02,624 INFO L137 encePairwiseOnDemand]: 568/586 looper letters, 195 selfloop transitions, 61 changer transitions 17/278 dead transitions. [2022-11-23 02:20:02,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 278 transitions, 2705 flow [2022-11-23 02:20:02,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 02:20:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-23 02:20:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4522 transitions. [2022-11-23 02:20:02,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4287068638604475 [2022-11-23 02:20:02,631 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4522 transitions. [2022-11-23 02:20:02,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4522 transitions. [2022-11-23 02:20:02,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:20:02,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4522 transitions. [2022-11-23 02:20:02,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 251.22222222222223) internal successors, (4522), 18 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:02,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 586.0) internal successors, (11134), 19 states have internal predecessors, (11134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:02,650 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 586.0) internal successors, (11134), 19 states have internal predecessors, (11134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:02,651 INFO L175 Difference]: Start difference. First operand has 205 places, 147 transitions, 1531 flow. Second operand 18 states and 4522 transitions. [2022-11-23 02:20:02,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 278 transitions, 2705 flow [2022-11-23 02:20:02,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 278 transitions, 2659 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-23 02:20:02,820 INFO L231 Difference]: Finished difference. Result has 215 places, 149 transitions, 1647 flow [2022-11-23 02:20:02,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1647, PETRI_PLACES=215, PETRI_TRANSITIONS=149} [2022-11-23 02:20:02,821 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 141 predicate places. [2022-11-23 02:20:02,821 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 149 transitions, 1647 flow [2022-11-23 02:20:02,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 242.5) internal successors, (4850), 20 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:02,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:20:02,823 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:02,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-23 02:20:02,823 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:20:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:02,824 INFO L85 PathProgramCache]: Analyzing trace with hash -846342851, now seen corresponding path program 3 times [2022-11-23 02:20:02,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:02,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705164464] [2022-11-23 02:20:02,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:02,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:04,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:20:04,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:04,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705164464] [2022-11-23 02:20:04,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705164464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:04,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:20:04,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 02:20:04,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377974663] [2022-11-23 02:20:04,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:04,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 02:20:04,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:04,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 02:20:04,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:20:08,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 586 [2022-11-23 02:20:08,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 149 transitions, 1647 flow. Second operand has 20 states, 20 states have (on average 242.5) internal successors, (4850), 20 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:08,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:20:08,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 586 [2022-11-23 02:20:08,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:20:11,136 INFO L130 PetriNetUnfolder]: 4563/8743 cut-off events. [2022-11-23 02:20:11,136 INFO L131 PetriNetUnfolder]: For 20997/20997 co-relation queries the response was YES. [2022-11-23 02:20:11,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32410 conditions, 8743 events. 4563/8743 cut-off events. For 20997/20997 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 57626 event pairs, 1154 based on Foata normal form. 20/8178 useless extension candidates. Maximal degree in co-relation 31382. Up to 2706 conditions per place. [2022-11-23 02:20:11,283 INFO L137 encePairwiseOnDemand]: 567/586 looper letters, 193 selfloop transitions, 68 changer transitions 17/283 dead transitions. [2022-11-23 02:20:11,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 283 transitions, 2852 flow [2022-11-23 02:20:11,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 02:20:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-23 02:20:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4764 transitions. [2022-11-23 02:20:11,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4278785701455003 [2022-11-23 02:20:11,296 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4764 transitions. [2022-11-23 02:20:11,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4764 transitions. [2022-11-23 02:20:11,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:20:11,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4764 transitions. [2022-11-23 02:20:11,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 250.73684210526315) internal successors, (4764), 19 states have internal predecessors, (4764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:11,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 586.0) internal successors, (11720), 20 states have internal predecessors, (11720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:11,311 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 586.0) internal successors, (11720), 20 states have internal predecessors, (11720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:11,311 INFO L175 Difference]: Start difference. First operand has 215 places, 149 transitions, 1647 flow. Second operand 19 states and 4764 transitions. [2022-11-23 02:20:11,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 283 transitions, 2852 flow [2022-11-23 02:20:11,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 283 transitions, 2734 flow, removed 4 selfloop flow, removed 17 redundant places. [2022-11-23 02:20:11,496 INFO L231 Difference]: Finished difference. Result has 219 places, 152 transitions, 1742 flow [2022-11-23 02:20:11,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1742, PETRI_PLACES=219, PETRI_TRANSITIONS=152} [2022-11-23 02:20:11,497 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 145 predicate places. [2022-11-23 02:20:11,497 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 152 transitions, 1742 flow [2022-11-23 02:20:11,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 242.5) internal successors, (4850), 20 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:11,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:20:11,498 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:11,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-23 02:20:11,498 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:20:11,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:11,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1184149731, now seen corresponding path program 4 times [2022-11-23 02:20:11,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:11,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130218334] [2022-11-23 02:20:11,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:11,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:20:13,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:13,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130218334] [2022-11-23 02:20:13,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130218334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:13,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:20:13,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-23 02:20:13,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787144790] [2022-11-23 02:20:13,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:13,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 02:20:13,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:13,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 02:20:13,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-23 02:20:16,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 586 [2022-11-23 02:20:16,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 152 transitions, 1742 flow. Second operand has 19 states, 19 states have (on average 242.57894736842104) internal successors, (4609), 19 states have internal predecessors, (4609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:16,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:20:16,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 586 [2022-11-23 02:20:16,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:20:19,881 INFO L130 PetriNetUnfolder]: 4622/8858 cut-off events. [2022-11-23 02:20:19,881 INFO L131 PetriNetUnfolder]: For 23344/23344 co-relation queries the response was YES. [2022-11-23 02:20:19,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33332 conditions, 8858 events. 4622/8858 cut-off events. For 23344/23344 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 57975 event pairs, 714 based on Foata normal form. 40/8297 useless extension candidates. Maximal degree in co-relation 26289. Up to 2768 conditions per place. [2022-11-23 02:20:19,990 INFO L137 encePairwiseOnDemand]: 569/586 looper letters, 182 selfloop transitions, 67 changer transitions 17/271 dead transitions. [2022-11-23 02:20:19,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 271 transitions, 2846 flow [2022-11-23 02:20:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 02:20:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-23 02:20:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4271 transitions. [2022-11-23 02:20:19,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42872917084922707 [2022-11-23 02:20:19,996 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4271 transitions. [2022-11-23 02:20:19,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4271 transitions. [2022-11-23 02:20:19,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:20:19,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4271 transitions. [2022-11-23 02:20:20,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 251.23529411764707) internal successors, (4271), 17 states have internal predecessors, (4271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:20,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 586.0) internal successors, (10548), 18 states have internal predecessors, (10548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:20,006 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 586.0) internal successors, (10548), 18 states have internal predecessors, (10548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:20,006 INFO L175 Difference]: Start difference. First operand has 219 places, 152 transitions, 1742 flow. Second operand 17 states and 4271 transitions. [2022-11-23 02:20:20,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 271 transitions, 2846 flow [2022-11-23 02:20:20,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 271 transitions, 2728 flow, removed 9 selfloop flow, removed 13 redundant places. [2022-11-23 02:20:20,176 INFO L231 Difference]: Finished difference. Result has 224 places, 154 transitions, 1814 flow [2022-11-23 02:20:20,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1814, PETRI_PLACES=224, PETRI_TRANSITIONS=154} [2022-11-23 02:20:20,176 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 150 predicate places. [2022-11-23 02:20:20,176 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 154 transitions, 1814 flow [2022-11-23 02:20:20,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 242.57894736842104) internal successors, (4609), 19 states have internal predecessors, (4609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:20,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:20:20,177 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:20,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-23 02:20:20,177 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:20:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1591778873, now seen corresponding path program 2 times [2022-11-23 02:20:20,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:20,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316709628] [2022-11-23 02:20:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:20,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:20:20,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:20,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316709628] [2022-11-23 02:20:20,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316709628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:20,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:20:20,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 02:20:20,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63672596] [2022-11-23 02:20:20,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:20,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 02:20:20,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:20,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 02:20:20,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:20:21,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 586 [2022-11-23 02:20:21,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 154 transitions, 1814 flow. Second operand has 12 states, 12 states have (on average 258.5) internal successors, (3102), 12 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:21,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:20:21,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 586 [2022-11-23 02:20:21,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:20:24,111 INFO L130 PetriNetUnfolder]: 4912/9442 cut-off events. [2022-11-23 02:20:24,111 INFO L131 PetriNetUnfolder]: For 25927/25927 co-relation queries the response was YES. [2022-11-23 02:20:24,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35570 conditions, 9442 events. 4912/9442 cut-off events. For 25927/25927 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 62356 event pairs, 927 based on Foata normal form. 20/8825 useless extension candidates. Maximal degree in co-relation 28643. Up to 3168 conditions per place. [2022-11-23 02:20:24,236 INFO L137 encePairwiseOnDemand]: 574/586 looper letters, 173 selfloop transitions, 44 changer transitions 13/235 dead transitions. [2022-11-23 02:20:24,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 235 transitions, 2662 flow [2022-11-23 02:20:24,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:20:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-23 02:20:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2947 transitions. [2022-11-23 02:20:24,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4571827489916227 [2022-11-23 02:20:24,240 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2947 transitions. [2022-11-23 02:20:24,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2947 transitions. [2022-11-23 02:20:24,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:20:24,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2947 transitions. [2022-11-23 02:20:24,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 267.90909090909093) internal successors, (2947), 11 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:24,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 586.0) internal successors, (7032), 12 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:24,247 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 586.0) internal successors, (7032), 12 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:24,247 INFO L175 Difference]: Start difference. First operand has 224 places, 154 transitions, 1814 flow. Second operand 11 states and 2947 transitions. [2022-11-23 02:20:24,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 235 transitions, 2662 flow [2022-11-23 02:20:24,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 235 transitions, 2533 flow, removed 5 selfloop flow, removed 15 redundant places. [2022-11-23 02:20:24,461 INFO L231 Difference]: Finished difference. Result has 217 places, 155 transitions, 1781 flow [2022-11-23 02:20:24,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1781, PETRI_PLACES=217, PETRI_TRANSITIONS=155} [2022-11-23 02:20:24,462 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 143 predicate places. [2022-11-23 02:20:24,462 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 155 transitions, 1781 flow [2022-11-23 02:20:24,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 258.5) internal successors, (3102), 12 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:24,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:20:24,463 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:24,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-23 02:20:24,464 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:20:24,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1811761546, now seen corresponding path program 1 times [2022-11-23 02:20:24,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:24,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228650671] [2022-11-23 02:20:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:24,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:20:26,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:26,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228650671] [2022-11-23 02:20:26,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228650671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:26,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:20:26,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 02:20:26,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818023444] [2022-11-23 02:20:26,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:26,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 02:20:26,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 02:20:26,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:20:29,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 586 [2022-11-23 02:20:29,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 155 transitions, 1781 flow. Second operand has 16 states, 16 states have (on average 255.0625) internal successors, (4081), 16 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:29,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:20:29,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 586 [2022-11-23 02:20:29,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:20:33,088 INFO L130 PetriNetUnfolder]: 5655/10866 cut-off events. [2022-11-23 02:20:33,088 INFO L131 PetriNetUnfolder]: For 36813/36813 co-relation queries the response was YES. [2022-11-23 02:20:33,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41222 conditions, 10866 events. 5655/10866 cut-off events. For 36813/36813 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 74401 event pairs, 3516 based on Foata normal form. 0/10138 useless extension candidates. Maximal degree in co-relation 33380. Up to 8192 conditions per place. [2022-11-23 02:20:33,226 INFO L137 encePairwiseOnDemand]: 570/586 looper letters, 205 selfloop transitions, 39 changer transitions 19/268 dead transitions. [2022-11-23 02:20:33,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 268 transitions, 2991 flow [2022-11-23 02:20:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:20:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 02:20:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3195 transitions. [2022-11-23 02:20:33,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4543515358361775 [2022-11-23 02:20:33,231 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3195 transitions. [2022-11-23 02:20:33,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3195 transitions. [2022-11-23 02:20:33,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:20:33,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3195 transitions. [2022-11-23 02:20:33,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 266.25) internal successors, (3195), 12 states have internal predecessors, (3195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:33,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:33,239 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:33,239 INFO L175 Difference]: Start difference. First operand has 217 places, 155 transitions, 1781 flow. Second operand 12 states and 3195 transitions. [2022-11-23 02:20:33,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 268 transitions, 2991 flow [2022-11-23 02:20:33,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 268 transitions, 2896 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-23 02:20:33,514 INFO L231 Difference]: Finished difference. Result has 226 places, 164 transitions, 1989 flow [2022-11-23 02:20:33,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1989, PETRI_PLACES=226, PETRI_TRANSITIONS=164} [2022-11-23 02:20:33,514 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 152 predicate places. [2022-11-23 02:20:33,514 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 164 transitions, 1989 flow [2022-11-23 02:20:33,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 255.0625) internal successors, (4081), 16 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:33,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:20:33,516 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:20:33,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-23 02:20:33,516 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-23 02:20:33,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:33,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1563237036, now seen corresponding path program 2 times [2022-11-23 02:20:33,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:33,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211701481] [2022-11-23 02:20:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:33,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat