./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8 --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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- 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-e04fb08 [2022-11-16 11:36:28,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:36:28,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:36:28,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:36:28,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:36:28,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:36:28,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:36:28,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:36:28,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:36:28,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:36:28,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:36:28,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:36:28,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:36:28,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:36:28,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:36:28,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:36:28,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:36:28,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:36:28,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:36:28,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:36:28,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:36:28,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:36:28,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:36:28,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:36:28,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:36:28,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:36:28,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:36:28,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:36:28,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:36:28,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:36:28,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:36:28,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:36:28,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:36:28,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:36:28,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:36:28,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:36:28,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:36:28,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:36:28,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:36:28,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:36:28,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:36:28,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:36:28,578 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:36:28,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:36:28,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:36:28,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:36:28,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:36:28,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:36:28,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:36:28,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:36:28,584 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:36:28,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:36:28,585 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:36:28,586 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:36:28,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:36:28,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:36:28,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:36:28,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:36:28,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:36:28,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:36:28,588 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:36:28,588 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:36:28,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:36:28,588 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:36:28,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:36:28,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:36:28,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:36:28,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:36:28,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:36:28,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:36:28,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:36:28,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:36:28,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:36:28,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:36:28,592 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:36:28,592 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:36:28,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:36:28,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2022-11-16 11:36:28,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:36:28,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:36:28,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:36:28,949 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:36:28,950 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:36:28,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/queue_longer.i [2022-11-16 11:36:29,043 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/data/043781427/84e84b21f9f940efb891d4248dc7e966/FLAGf001e2a63 [2022-11-16 11:36:29,732 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:36:29,733 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/sv-benchmarks/c/pthread/queue_longer.i [2022-11-16 11:36:29,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/data/043781427/84e84b21f9f940efb891d4248dc7e966/FLAGf001e2a63 [2022-11-16 11:36:29,958 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/data/043781427/84e84b21f9f940efb891d4248dc7e966 [2022-11-16 11:36:29,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:36:29,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:36:29,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:36:29,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:36:29,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:36:29,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:36:29" (1/1) ... [2022-11-16 11:36:29,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67aa59e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:29, skipping insertion in model container [2022-11-16 11:36:29,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:36:29" (1/1) ... [2022-11-16 11:36:29,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:36:30,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:36:30,658 WARN L229 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_a81be739-b358-4ed2-9363-64d17e63944e/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-16 11:36:30,672 WARN L229 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_a81be739-b358-4ed2-9363-64d17e63944e/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-16 11:36:30,679 WARN L229 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_a81be739-b358-4ed2-9363-64d17e63944e/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-16 11:36:30,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:36:30,706 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:36:30,758 WARN L229 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_a81be739-b358-4ed2-9363-64d17e63944e/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-16 11:36:30,760 WARN L229 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_a81be739-b358-4ed2-9363-64d17e63944e/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-16 11:36:30,764 WARN L229 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_a81be739-b358-4ed2-9363-64d17e63944e/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-16 11:36:30,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:36:30,838 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:36:30,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30 WrapperNode [2022-11-16 11:36:30,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:36:30,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:36:30,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:36:30,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:36:30,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30" (1/1) ... [2022-11-16 11:36:30,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30" (1/1) ... [2022-11-16 11:36:30,955 INFO L138 Inliner]: procedures = 274, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 261 [2022-11-16 11:36:30,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:36:30,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:36:30,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:36:30,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:36:30,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30" (1/1) ... [2022-11-16 11:36:30,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30" (1/1) ... [2022-11-16 11:36:30,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30" (1/1) ... [2022-11-16 11:36:31,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30" (1/1) ... [2022-11-16 11:36:31,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30" (1/1) ... [2022-11-16 11:36:31,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30" (1/1) ... [2022-11-16 11:36:31,039 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30" (1/1) ... [2022-11-16 11:36:31,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30" (1/1) ... [2022-11-16 11:36:31,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:36:31,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:36:31,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:36:31,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:36:31,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30" (1/1) ... [2022-11-16 11:36:31,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:36:31,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:31,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:31,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:36:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-16 11:36:31,167 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-16 11:36:31,167 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-16 11:36:31,167 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-16 11:36:31,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:36:31,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:36:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:36:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:36:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:36:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:36:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:36:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:36:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:36:31,170 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:36:31,465 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:36:31,467 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:36:32,120 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:36:32,133 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:36:32,133 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:36:32,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:36:32 BoogieIcfgContainer [2022-11-16 11:36:32,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:36:32,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:36:32,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:36:32,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:36:32,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:36:29" (1/3) ... [2022-11-16 11:36:32,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff2bf24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:36:32, skipping insertion in model container [2022-11-16 11:36:32,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:30" (2/3) ... [2022-11-16 11:36:32,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff2bf24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:36:32, skipping insertion in model container [2022-11-16 11:36:32,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:36:32" (3/3) ... [2022-11-16 11:36:32,148 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2022-11-16 11:36:32,159 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:36:32,173 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:36:32,173 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 11:36:32,173 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:36:32,319 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:36:32,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 307 transitions, 630 flow [2022-11-16 11:36:32,561 INFO L130 PetriNetUnfolder]: 15/305 cut-off events. [2022-11-16 11:36:32,561 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:36:32,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 305 events. 15/305 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 464 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-11-16 11:36:32,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 299 places, 307 transitions, 630 flow [2022-11-16 11:36:32,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 295 transitions, 599 flow [2022-11-16 11:36:32,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:36:32,640 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;@3721aa5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:36:32,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-16 11:36:32,696 INFO L130 PetriNetUnfolder]: 3/113 cut-off events. [2022-11-16 11:36:32,697 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:36:32,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:36:32,698 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:32,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:36:32,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:32,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1736763422, now seen corresponding path program 1 times [2022-11-16 11:36:32,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:32,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834015440] [2022-11-16 11:36:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:34,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:34,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834015440] [2022-11-16 11:36:34,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834015440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:34,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:34,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:36:34,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021690147] [2022-11-16 11:36:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:34,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:36:34,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:34,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:36:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:36:34,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 307 [2022-11-16 11:36:34,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 295 transitions, 599 flow. Second operand has 12 states, 12 states have (on average 232.33333333333334) internal successors, (2788), 12 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:34,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:36:34,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 307 [2022-11-16 11:36:34,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:36:36,825 INFO L130 PetriNetUnfolder]: 1003/4827 cut-off events. [2022-11-16 11:36:36,825 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-11-16 11:36:36,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6351 conditions, 4827 events. 1003/4827 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 42152 event pairs, 789 based on Foata normal form. 200/4355 useless extension candidates. Maximal degree in co-relation 6146. Up to 1435 conditions per place. [2022-11-16 11:36:36,928 INFO L137 encePairwiseOnDemand]: 289/307 looper letters, 52 selfloop transitions, 12 changer transitions 0/281 dead transitions. [2022-11-16 11:36:36,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 281 transitions, 699 flow [2022-11-16 11:36:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:36:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:36:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3060 transitions. [2022-11-16 11:36:36,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7667251315459784 [2022-11-16 11:36:36,956 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3060 transitions. [2022-11-16 11:36:36,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3060 transitions. [2022-11-16 11:36:36,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:36:36,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3060 transitions. [2022-11-16 11:36:36,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 235.3846153846154) internal successors, (3060), 13 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:37,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:37,008 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:37,010 INFO L175 Difference]: Start difference. First operand has 287 places, 295 transitions, 599 flow. Second operand 13 states and 3060 transitions. [2022-11-16 11:36:37,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 281 transitions, 699 flow [2022-11-16 11:36:37,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 281 transitions, 694 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:36:37,033 INFO L231 Difference]: Finished difference. Result has 288 places, 281 transitions, 590 flow [2022-11-16 11:36:37,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=590, PETRI_PLACES=288, PETRI_TRANSITIONS=281} [2022-11-16 11:36:37,044 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 1 predicate places. [2022-11-16 11:36:37,045 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 281 transitions, 590 flow [2022-11-16 11:36:37,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 232.33333333333334) internal successors, (2788), 12 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:37,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:36:37,049 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:37,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:36:37,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:36:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:37,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1470299404, now seen corresponding path program 1 times [2022-11-16 11:36:37,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:37,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055170018] [2022-11-16 11:36:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:37,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:37,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:37,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055170018] [2022-11-16 11:36:37,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055170018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:37,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:37,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:36:37,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985437425] [2022-11-16 11:36:37,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:37,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:36:37,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:37,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:36:37,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:36:37,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 307 [2022-11-16 11:36:37,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 281 transitions, 590 flow. Second operand has 4 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:37,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:36:37,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 307 [2022-11-16 11:36:37,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:36:37,490 INFO L130 PetriNetUnfolder]: 34/487 cut-off events. [2022-11-16 11:36:37,490 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-11-16 11:36:37,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 487 events. 34/487 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1764 event pairs, 5 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 487. Up to 39 conditions per place. [2022-11-16 11:36:37,498 INFO L137 encePairwiseOnDemand]: 300/307 looper letters, 21 selfloop transitions, 4 changer transitions 0/291 dead transitions. [2022-11-16 11:36:37,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 291 transitions, 663 flow [2022-11-16 11:36:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:36:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:36:37,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1438 transitions. [2022-11-16 11:36:37,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9368078175895765 [2022-11-16 11:36:37,505 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1438 transitions. [2022-11-16 11:36:37,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1438 transitions. [2022-11-16 11:36:37,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:36:37,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1438 transitions. [2022-11-16 11:36:37,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 287.6) internal successors, (1438), 5 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:37,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:37,519 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:37,519 INFO L175 Difference]: Start difference. First operand has 288 places, 281 transitions, 590 flow. Second operand 5 states and 1438 transitions. [2022-11-16 11:36:37,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 291 transitions, 663 flow [2022-11-16 11:36:37,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 291 transitions, 640 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-16 11:36:37,533 INFO L231 Difference]: Finished difference. Result has 284 places, 284 transitions, 599 flow [2022-11-16 11:36:37,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=599, PETRI_PLACES=284, PETRI_TRANSITIONS=284} [2022-11-16 11:36:37,535 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, -3 predicate places. [2022-11-16 11:36:37,536 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 284 transitions, 599 flow [2022-11-16 11:36:37,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:37,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:36:37,538 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:37,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:36:37,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:36:37,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:37,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1299927559, now seen corresponding path program 1 times [2022-11-16 11:36:37,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:37,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821761725] [2022-11-16 11:36:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:37,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:51,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:51,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821761725] [2022-11-16 11:36:51,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821761725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:51,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:51,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:36:51,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059925047] [2022-11-16 11:36:51,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:51,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:36:51,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:51,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:36:51,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:36:51,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 307 [2022-11-16 11:36:51,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 284 transitions, 599 flow. Second operand has 21 states, 21 states have (on average 212.66666666666666) internal successors, (4466), 21 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:51,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:36:51,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 307 [2022-11-16 11:36:51,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:03,565 INFO L130 PetriNetUnfolder]: 3593/11363 cut-off events. [2022-11-16 11:37:03,567 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-11-16 11:37:03,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17235 conditions, 11363 events. 3593/11363 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 111809 event pairs, 2967 based on Foata normal form. 0/9985 useless extension candidates. Maximal degree in co-relation 17141. Up to 4855 conditions per place. [2022-11-16 11:37:03,676 INFO L137 encePairwiseOnDemand]: 285/307 looper letters, 119 selfloop transitions, 28 changer transitions 0/347 dead transitions. [2022-11-16 11:37:03,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 347 transitions, 1025 flow [2022-11-16 11:37:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:37:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:37:03,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4582 transitions. [2022-11-16 11:37:03,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7107181634868931 [2022-11-16 11:37:03,690 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4582 transitions. [2022-11-16 11:37:03,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4582 transitions. [2022-11-16 11:37:03,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:03,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4582 transitions. [2022-11-16 11:37:03,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 218.1904761904762) internal successors, (4582), 21 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:03,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 307.0) internal successors, (6754), 22 states have internal predecessors, (6754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:03,721 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 307.0) internal successors, (6754), 22 states have internal predecessors, (6754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:03,721 INFO L175 Difference]: Start difference. First operand has 284 places, 284 transitions, 599 flow. Second operand 21 states and 4582 transitions. [2022-11-16 11:37:03,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 347 transitions, 1025 flow [2022-11-16 11:37:03,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 347 transitions, 1023 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:37:03,730 INFO L231 Difference]: Finished difference. Result has 312 places, 305 transitions, 756 flow [2022-11-16 11:37:03,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=756, PETRI_PLACES=312, PETRI_TRANSITIONS=305} [2022-11-16 11:37:03,732 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 25 predicate places. [2022-11-16 11:37:03,732 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 305 transitions, 756 flow [2022-11-16 11:37:03,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 212.66666666666666) internal successors, (4466), 21 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:03,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:03,735 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:03,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:37:03,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:37:03,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:03,737 INFO L85 PathProgramCache]: Analyzing trace with hash 214454149, now seen corresponding path program 1 times [2022-11-16 11:37:03,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:03,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834765174] [2022-11-16 11:37:03,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:03,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:06,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:06,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834765174] [2022-11-16 11:37:06,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834765174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:06,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:06,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:37:06,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314207498] [2022-11-16 11:37:06,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:06,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:37:06,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:06,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:37:06,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:37:06,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 307 [2022-11-16 11:37:06,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 305 transitions, 756 flow. Second operand has 20 states, 20 states have (on average 203.2) internal successors, (4064), 20 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:06,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:06,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 307 [2022-11-16 11:37:06,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:12,247 INFO L130 PetriNetUnfolder]: 4207/14459 cut-off events. [2022-11-16 11:37:12,247 INFO L131 PetriNetUnfolder]: For 1205/1209 co-relation queries the response was YES. [2022-11-16 11:37:12,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22832 conditions, 14459 events. 4207/14459 cut-off events. For 1205/1209 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 150638 event pairs, 902 based on Foata normal form. 102/12991 useless extension candidates. Maximal degree in co-relation 22712. Up to 4446 conditions per place. [2022-11-16 11:37:12,412 INFO L137 encePairwiseOnDemand]: 285/307 looper letters, 192 selfloop transitions, 44 changer transitions 0/428 dead transitions. [2022-11-16 11:37:12,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 428 transitions, 1532 flow [2022-11-16 11:37:12,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:37:12,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 11:37:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4646 transitions. [2022-11-16 11:37:12,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6878886585726977 [2022-11-16 11:37:12,508 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4646 transitions. [2022-11-16 11:37:12,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4646 transitions. [2022-11-16 11:37:12,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:12,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4646 transitions. [2022-11-16 11:37:12,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 211.1818181818182) internal successors, (4646), 22 states have internal predecessors, (4646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:12,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:12,554 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:12,563 INFO L175 Difference]: Start difference. First operand has 312 places, 305 transitions, 756 flow. Second operand 22 states and 4646 transitions. [2022-11-16 11:37:12,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 428 transitions, 1532 flow [2022-11-16 11:37:12,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 428 transitions, 1517 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 11:37:12,594 INFO L231 Difference]: Finished difference. Result has 332 places, 334 transitions, 999 flow [2022-11-16 11:37:12,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=999, PETRI_PLACES=332, PETRI_TRANSITIONS=334} [2022-11-16 11:37:12,597 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 45 predicate places. [2022-11-16 11:37:12,597 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 334 transitions, 999 flow [2022-11-16 11:37:12,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 203.2) internal successors, (4064), 20 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:12,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:12,601 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:12,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:37:12,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:37:12,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:12,602 INFO L85 PathProgramCache]: Analyzing trace with hash 446451361, now seen corresponding path program 1 times [2022-11-16 11:37:12,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:12,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577307430] [2022-11-16 11:37:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:12,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:37:12,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:12,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577307430] [2022-11-16 11:37:12,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577307430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:12,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:12,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:12,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733667284] [2022-11-16 11:37:12,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:12,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:37:12,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:12,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:37:12,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:37:12,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 307 [2022-11-16 11:37:12,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 334 transitions, 999 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:12,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:12,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 307 [2022-11-16 11:37:12,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:13,303 INFO L130 PetriNetUnfolder]: 168/2277 cut-off events. [2022-11-16 11:37:13,303 INFO L131 PetriNetUnfolder]: For 258/259 co-relation queries the response was YES. [2022-11-16 11:37:13,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3095 conditions, 2277 events. 168/2277 cut-off events. For 258/259 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 19934 event pairs, 24 based on Foata normal form. 19/2048 useless extension candidates. Maximal degree in co-relation 3000. Up to 147 conditions per place. [2022-11-16 11:37:13,326 INFO L137 encePairwiseOnDemand]: 301/307 looper letters, 13 selfloop transitions, 8 changer transitions 0/337 dead transitions. [2022-11-16 11:37:13,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 337 transitions, 1048 flow [2022-11-16 11:37:13,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:13,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:13,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1429 transitions. [2022-11-16 11:37:13,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9309446254071662 [2022-11-16 11:37:13,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1429 transitions. [2022-11-16 11:37:13,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1429 transitions. [2022-11-16 11:37:13,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:13,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1429 transitions. [2022-11-16 11:37:13,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.8) internal successors, (1429), 5 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:13,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:13,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:13,342 INFO L175 Difference]: Start difference. First operand has 332 places, 334 transitions, 999 flow. Second operand 5 states and 1429 transitions. [2022-11-16 11:37:13,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 337 transitions, 1048 flow [2022-11-16 11:37:13,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 337 transitions, 1015 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-16 11:37:13,363 INFO L231 Difference]: Finished difference. Result has 328 places, 334 transitions, 986 flow [2022-11-16 11:37:13,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=986, PETRI_PLACES=328, PETRI_TRANSITIONS=334} [2022-11-16 11:37:13,369 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 41 predicate places. [2022-11-16 11:37:13,369 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 334 transitions, 986 flow [2022-11-16 11:37:13,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:13,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:13,370 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:13,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:37:13,371 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:37:13,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:13,372 INFO L85 PathProgramCache]: Analyzing trace with hash 955091174, now seen corresponding path program 1 times [2022-11-16 11:37:13,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:13,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372770881] [2022-11-16 11:37:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:13,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:13,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:13,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372770881] [2022-11-16 11:37:13,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372770881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:13,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221151882] [2022-11-16 11:37:13,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:13,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:13,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:13,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:13,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:37:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:13,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:37:13,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:13,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:37:13,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221151882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:13,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:13,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:37:13,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014431686] [2022-11-16 11:37:13,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:13,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:37:13,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:13,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:37:13,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:37:13,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 307 [2022-11-16 11:37:13,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 334 transitions, 986 flow. Second operand has 6 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 6 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:13,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:13,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 307 [2022-11-16 11:37:13,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:14,491 INFO L130 PetriNetUnfolder]: 166/2254 cut-off events. [2022-11-16 11:37:14,491 INFO L131 PetriNetUnfolder]: For 401/402 co-relation queries the response was YES. [2022-11-16 11:37:14,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3167 conditions, 2254 events. 166/2254 cut-off events. For 401/402 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 19538 event pairs, 3 based on Foata normal form. 19/2028 useless extension candidates. Maximal degree in co-relation 3079. Up to 99 conditions per place. [2022-11-16 11:37:14,514 INFO L137 encePairwiseOnDemand]: 302/307 looper letters, 19 selfloop transitions, 6 changer transitions 0/341 dead transitions. [2022-11-16 11:37:14,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 341 transitions, 1053 flow [2022-11-16 11:37:14,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:37:14,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:37:14,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2022-11-16 11:37:14,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9306654257794323 [2022-11-16 11:37:14,520 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2022-11-16 11:37:14,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2022-11-16 11:37:14,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:14,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2022-11-16 11:37:14,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:14,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:14,531 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:14,532 INFO L175 Difference]: Start difference. First operand has 328 places, 334 transitions, 986 flow. Second operand 7 states and 2000 transitions. [2022-11-16 11:37:14,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 341 transitions, 1053 flow [2022-11-16 11:37:14,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 341 transitions, 1041 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:37:14,543 INFO L231 Difference]: Finished difference. Result has 330 places, 333 transitions, 982 flow [2022-11-16 11:37:14,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=982, PETRI_PLACES=330, PETRI_TRANSITIONS=333} [2022-11-16 11:37:14,546 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 43 predicate places. [2022-11-16 11:37:14,546 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 333 transitions, 982 flow [2022-11-16 11:37:14,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 6 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:14,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:14,547 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:14,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:14,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:14,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:37:14,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash 366854273, now seen corresponding path program 1 times [2022-11-16 11:37:14,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:14,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674111201] [2022-11-16 11:37:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:14,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:14,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:14,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674111201] [2022-11-16 11:37:14,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674111201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:14,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:14,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489214645] [2022-11-16 11:37:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:14,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:37:14,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:14,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:37:14,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:37:14,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 307 [2022-11-16 11:37:14,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 333 transitions, 982 flow. Second operand has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:14,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:14,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 307 [2022-11-16 11:37:14,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:15,169 INFO L130 PetriNetUnfolder]: 71/1165 cut-off events. [2022-11-16 11:37:15,170 INFO L131 PetriNetUnfolder]: For 121/122 co-relation queries the response was YES. [2022-11-16 11:37:15,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 1165 events. 71/1165 cut-off events. For 121/122 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4973 event pairs, 5 based on Foata normal form. 0/1016 useless extension candidates. Maximal degree in co-relation 1438. Up to 38 conditions per place. [2022-11-16 11:37:15,184 INFO L137 encePairwiseOnDemand]: 303/307 looper letters, 10 selfloop transitions, 3 changer transitions 0/306 dead transitions. [2022-11-16 11:37:15,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 306 transitions, 855 flow [2022-11-16 11:37:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:37:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:37:15,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 878 transitions. [2022-11-16 11:37:15,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9533116178067318 [2022-11-16 11:37:15,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 878 transitions. [2022-11-16 11:37:15,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 878 transitions. [2022-11-16 11:37:15,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:15,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 878 transitions. [2022-11-16 11:37:15,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:15,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:15,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:15,194 INFO L175 Difference]: Start difference. First operand has 330 places, 333 transitions, 982 flow. Second operand 3 states and 878 transitions. [2022-11-16 11:37:15,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 306 transitions, 855 flow [2022-11-16 11:37:15,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 306 transitions, 771 flow, removed 2 selfloop flow, removed 21 redundant places. [2022-11-16 11:37:15,203 INFO L231 Difference]: Finished difference. Result has 307 places, 303 transitions, 749 flow [2022-11-16 11:37:15,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=749, PETRI_PLACES=307, PETRI_TRANSITIONS=303} [2022-11-16 11:37:15,205 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 20 predicate places. [2022-11-16 11:37:15,205 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 303 transitions, 749 flow [2022-11-16 11:37:15,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:15,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:15,206 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:15,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:37:15,206 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:37:15,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:15,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1125066498, now seen corresponding path program 1 times [2022-11-16 11:37:15,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:15,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526258481] [2022-11-16 11:37:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:15,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:19,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:19,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526258481] [2022-11-16 11:37:19,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526258481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:19,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:19,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:37:19,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237445416] [2022-11-16 11:37:19,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:19,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:37:19,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:19,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:37:19,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:37:19,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 307 [2022-11-16 11:37:19,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 303 transitions, 749 flow. Second operand has 20 states, 20 states have (on average 212.9) internal successors, (4258), 20 states have internal predecessors, (4258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:19,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:19,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 307 [2022-11-16 11:37:19,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:24,044 INFO L130 PetriNetUnfolder]: 1697/7544 cut-off events. [2022-11-16 11:37:24,045 INFO L131 PetriNetUnfolder]: For 344/348 co-relation queries the response was YES. [2022-11-16 11:37:24,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11294 conditions, 7544 events. 1697/7544 cut-off events. For 344/348 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 70168 event pairs, 1402 based on Foata normal form. 2/6752 useless extension candidates. Maximal degree in co-relation 11277. Up to 2630 conditions per place. [2022-11-16 11:37:24,111 INFO L137 encePairwiseOnDemand]: 284/307 looper letters, 92 selfloop transitions, 34 changer transitions 0/328 dead transitions. [2022-11-16 11:37:24,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 328 transitions, 1067 flow [2022-11-16 11:37:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:37:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:37:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4556 transitions. [2022-11-16 11:37:24,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7066852799751823 [2022-11-16 11:37:24,124 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4556 transitions. [2022-11-16 11:37:24,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4556 transitions. [2022-11-16 11:37:24,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:24,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4556 transitions. [2022-11-16 11:37:24,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 216.95238095238096) internal successors, (4556), 21 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 307.0) internal successors, (6754), 22 states have internal predecessors, (6754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,155 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 307.0) internal successors, (6754), 22 states have internal predecessors, (6754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,156 INFO L175 Difference]: Start difference. First operand has 307 places, 303 transitions, 749 flow. Second operand 21 states and 4556 transitions. [2022-11-16 11:37:24,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 328 transitions, 1067 flow [2022-11-16 11:37:24,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 328 transitions, 1064 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:37:24,176 INFO L231 Difference]: Finished difference. Result has 331 places, 313 transitions, 887 flow [2022-11-16 11:37:24,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=887, PETRI_PLACES=331, PETRI_TRANSITIONS=313} [2022-11-16 11:37:24,180 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 44 predicate places. [2022-11-16 11:37:24,181 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 313 transitions, 887 flow [2022-11-16 11:37:24,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 212.9) internal successors, (4258), 20 states have internal predecessors, (4258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:24,183 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:24,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:37:24,184 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:37:24,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:24,184 INFO L85 PathProgramCache]: Analyzing trace with hash 655313294, now seen corresponding path program 1 times [2022-11-16 11:37:24,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:24,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664254562] [2022-11-16 11:37:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:24,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:25,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:25,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664254562] [2022-11-16 11:37:25,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664254562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:25,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:25,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 11:37:25,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722266838] [2022-11-16 11:37:25,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:25,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:37:25,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:25,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:37:25,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:37:25,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 307 [2022-11-16 11:37:25,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 313 transitions, 887 flow. Second operand has 19 states, 19 states have (on average 203.47368421052633) internal successors, (3866), 19 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:25,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:25,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 307 [2022-11-16 11:37:25,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:29,117 INFO L130 PetriNetUnfolder]: 1694/7564 cut-off events. [2022-11-16 11:37:29,118 INFO L131 PetriNetUnfolder]: For 727/731 co-relation queries the response was YES. [2022-11-16 11:37:29,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11546 conditions, 7564 events. 1694/7564 cut-off events. For 727/731 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 70265 event pairs, 850 based on Foata normal form. 6/6784 useless extension candidates. Maximal degree in co-relation 11524. Up to 2522 conditions per place. [2022-11-16 11:37:29,181 INFO L137 encePairwiseOnDemand]: 287/307 looper letters, 106 selfloop transitions, 29 changer transitions 0/329 dead transitions. [2022-11-16 11:37:29,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 329 transitions, 1213 flow [2022-11-16 11:37:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:37:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:37:29,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3734 transitions. [2022-11-16 11:37:29,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6757148027506333 [2022-11-16 11:37:29,194 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3734 transitions. [2022-11-16 11:37:29,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3734 transitions. [2022-11-16 11:37:29,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:29,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3734 transitions. [2022-11-16 11:37:29,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 207.44444444444446) internal successors, (3734), 18 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 307.0) internal successors, (5833), 19 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,220 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 307.0) internal successors, (5833), 19 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,221 INFO L175 Difference]: Start difference. First operand has 331 places, 313 transitions, 887 flow. Second operand 18 states and 3734 transitions. [2022-11-16 11:37:29,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 329 transitions, 1213 flow [2022-11-16 11:37:29,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 329 transitions, 1179 flow, removed 2 selfloop flow, removed 13 redundant places. [2022-11-16 11:37:29,235 INFO L231 Difference]: Finished difference. Result has 333 places, 311 transitions, 899 flow [2022-11-16 11:37:29,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=899, PETRI_PLACES=333, PETRI_TRANSITIONS=311} [2022-11-16 11:37:29,237 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 46 predicate places. [2022-11-16 11:37:29,238 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 311 transitions, 899 flow [2022-11-16 11:37:29,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.47368421052633) internal successors, (3866), 19 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:29,240 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:29,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:37:29,240 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:37:29,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:29,241 INFO L85 PathProgramCache]: Analyzing trace with hash 69998364, now seen corresponding path program 1 times [2022-11-16 11:37:29,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:29,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406598886] [2022-11-16 11:37:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:29,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:29,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:29,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406598886] [2022-11-16 11:37:29,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406598886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:29,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:29,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:29,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347346074] [2022-11-16 11:37:29,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:29,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:37:29,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:29,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:37:29,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:37:29,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 307 [2022-11-16 11:37:29,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 311 transitions, 899 flow. Second operand has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:29,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 307 [2022-11-16 11:37:29,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:29,817 INFO L130 PetriNetUnfolder]: 110/1450 cut-off events. [2022-11-16 11:37:29,818 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2022-11-16 11:37:29,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2085 conditions, 1450 events. 110/1450 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6304 event pairs, 31 based on Foata normal form. 0/1294 useless extension candidates. Maximal degree in co-relation 2063. Up to 189 conditions per place. [2022-11-16 11:37:29,828 INFO L137 encePairwiseOnDemand]: 298/307 looper letters, 27 selfloop transitions, 4 changer transitions 0/323 dead transitions. [2022-11-16 11:37:29,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 323 transitions, 991 flow [2022-11-16 11:37:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:29,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1426 transitions. [2022-11-16 11:37:29,838 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9289902280130293 [2022-11-16 11:37:29,839 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1426 transitions. [2022-11-16 11:37:29,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1426 transitions. [2022-11-16 11:37:29,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:29,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1426 transitions. [2022-11-16 11:37:29,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,847 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,847 INFO L175 Difference]: Start difference. First operand has 333 places, 311 transitions, 899 flow. Second operand 5 states and 1426 transitions. [2022-11-16 11:37:29,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 323 transitions, 991 flow [2022-11-16 11:37:29,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 323 transitions, 937 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-16 11:37:29,856 INFO L231 Difference]: Finished difference. Result has 324 places, 314 transitions, 881 flow [2022-11-16 11:37:29,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=881, PETRI_PLACES=324, PETRI_TRANSITIONS=314} [2022-11-16 11:37:29,858 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 37 predicate places. [2022-11-16 11:37:29,858 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 314 transitions, 881 flow [2022-11-16 11:37:29,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:29,859 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:29,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:37:29,860 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:37:29,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:29,860 INFO L85 PathProgramCache]: Analyzing trace with hash -865845743, now seen corresponding path program 1 times [2022-11-16 11:37:29,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:29,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212775029] [2022-11-16 11:37:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:29,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:37:29,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:29,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212775029] [2022-11-16 11:37:29,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212775029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:29,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:29,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:29,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792018424] [2022-11-16 11:37:29,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:29,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:37:29,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:29,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:37:29,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:37:29,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 307 [2022-11-16 11:37:29,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 314 transitions, 881 flow. Second operand has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:29,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 307 [2022-11-16 11:37:29,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:30,300 INFO L130 PetriNetUnfolder]: 107/1454 cut-off events. [2022-11-16 11:37:30,301 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-16 11:37:30,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 1454 events. 107/1454 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6344 event pairs, 10 based on Foata normal form. 20/1368 useless extension candidates. Maximal degree in co-relation 2119. Up to 80 conditions per place. [2022-11-16 11:37:30,315 INFO L137 encePairwiseOnDemand]: 300/307 looper letters, 16 selfloop transitions, 8 changer transitions 0/316 dead transitions. [2022-11-16 11:37:30,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 316 transitions, 935 flow [2022-11-16 11:37:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1413 transitions. [2022-11-16 11:37:30,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9205211726384365 [2022-11-16 11:37:30,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1413 transitions. [2022-11-16 11:37:30,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1413 transitions. [2022-11-16 11:37:30,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:30,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1413 transitions. [2022-11-16 11:37:30,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:30,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:30,330 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:30,330 INFO L175 Difference]: Start difference. First operand has 324 places, 314 transitions, 881 flow. Second operand 5 states and 1413 transitions. [2022-11-16 11:37:30,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 316 transitions, 935 flow [2022-11-16 11:37:30,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 316 transitions, 933 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:37:30,340 INFO L231 Difference]: Finished difference. Result has 326 places, 313 transitions, 895 flow [2022-11-16 11:37:30,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=895, PETRI_PLACES=326, PETRI_TRANSITIONS=313} [2022-11-16 11:37:30,342 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 39 predicate places. [2022-11-16 11:37:30,342 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 313 transitions, 895 flow [2022-11-16 11:37:30,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:30,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:30,343 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:30,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:37:30,344 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:37:30,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:30,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1071413454, now seen corresponding path program 1 times [2022-11-16 11:37:30,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:30,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547020716] [2022-11-16 11:37:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:30,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:30,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:30,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547020716] [2022-11-16 11:37:30,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547020716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:30,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032345405] [2022-11-16 11:37:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:30,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:30,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:30,484 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:30,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:37:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:30,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:37:30,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:30,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:37:30,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032345405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:30,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:30,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:37:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232480475] [2022-11-16 11:37:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:30,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:37:30,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:30,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:37:30,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:37:30,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 307 [2022-11-16 11:37:30,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 313 transitions, 895 flow. Second operand has 6 states, 6 states have (on average 280.1666666666667) internal successors, (1681), 6 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:30,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:30,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 307 [2022-11-16 11:37:30,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:31,210 INFO L130 PetriNetUnfolder]: 103/1430 cut-off events. [2022-11-16 11:37:31,210 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2022-11-16 11:37:31,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2139 conditions, 1430 events. 103/1430 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 6181 event pairs, 3 based on Foata normal form. 20/1344 useless extension candidates. Maximal degree in co-relation 2114. Up to 84 conditions per place. [2022-11-16 11:37:31,226 INFO L137 encePairwiseOnDemand]: 301/307 looper letters, 23 selfloop transitions, 6 changer transitions 0/321 dead transitions. [2022-11-16 11:37:31,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 321 transitions, 975 flow [2022-11-16 11:37:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:37:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:37:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1977 transitions. [2022-11-16 11:37:31,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9199627733829688 [2022-11-16 11:37:31,234 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1977 transitions. [2022-11-16 11:37:31,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1977 transitions. [2022-11-16 11:37:31,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:31,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1977 transitions. [2022-11-16 11:37:31,242 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) [2022-11-16 11:37:31,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:31,249 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:31,250 INFO L175 Difference]: Start difference. First operand has 326 places, 313 transitions, 895 flow. Second operand 7 states and 1977 transitions. [2022-11-16 11:37:31,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 321 transitions, 975 flow [2022-11-16 11:37:31,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 321 transitions, 963 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:37:31,261 INFO L231 Difference]: Finished difference. Result has 327 places, 311 transitions, 887 flow [2022-11-16 11:37:31,262 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=887, PETRI_PLACES=327, PETRI_TRANSITIONS=311} [2022-11-16 11:37:31,263 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 40 predicate places. [2022-11-16 11:37:31,263 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 311 transitions, 887 flow [2022-11-16 11:37:31,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 280.1666666666667) internal successors, (1681), 6 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:31,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:31,264 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:31,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:31,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81be739-b358-4ed2-9363-64d17e63944e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:37:31,471 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:37:31,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:31,472 INFO L85 PathProgramCache]: Analyzing trace with hash 155091461, now seen corresponding path program 1 times [2022-11-16 11:37:31,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:31,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699315076] [2022-11-16 11:37:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:31,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:33,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:33,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699315076] [2022-11-16 11:37:33,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699315076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:33,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:33,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-16 11:37:33,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680400122] [2022-11-16 11:37:33,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:33,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:37:33,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:33,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:37:33,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:37:33,122 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 307 [2022-11-16 11:37:33,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 311 transitions, 887 flow. Second operand has 17 states, 17 states have (on average 220.8235294117647) internal successors, (3754), 17 states have internal predecessors, (3754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:33,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:33,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 307 [2022-11-16 11:37:33,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:35,930 INFO L130 PetriNetUnfolder]: 1733/7718 cut-off events. [2022-11-16 11:37:35,930 INFO L131 PetriNetUnfolder]: For 956/960 co-relation queries the response was YES. [2022-11-16 11:37:35,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12032 conditions, 7718 events. 1733/7718 cut-off events. For 956/960 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 69212 event pairs, 1338 based on Foata normal form. 2/7011 useless extension candidates. Maximal degree in co-relation 12006. Up to 2691 conditions per place. [2022-11-16 11:37:35,988 INFO L137 encePairwiseOnDemand]: 290/307 looper letters, 78 selfloop transitions, 30 changer transitions 0/319 dead transitions. [2022-11-16 11:37:35,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 319 transitions, 1122 flow [2022-11-16 11:37:35,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:37:35,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:37:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3371 transitions. [2022-11-16 11:37:35,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7320304017372421 [2022-11-16 11:37:35,997 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3371 transitions. [2022-11-16 11:37:35,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3371 transitions. [2022-11-16 11:37:35,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:35,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3371 transitions. [2022-11-16 11:37:36,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 224.73333333333332) internal successors, (3371), 15 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:36,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 307.0) internal successors, (4912), 16 states have internal predecessors, (4912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:36,017 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 307.0) internal successors, (4912), 16 states have internal predecessors, (4912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:36,017 INFO L175 Difference]: Start difference. First operand has 327 places, 311 transitions, 887 flow. Second operand 15 states and 3371 transitions. [2022-11-16 11:37:36,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 319 transitions, 1122 flow [2022-11-16 11:37:36,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 319 transitions, 1109 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-16 11:37:36,030 INFO L231 Difference]: Finished difference. Result has 339 places, 314 transitions, 969 flow [2022-11-16 11:37:36,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=969, PETRI_PLACES=339, PETRI_TRANSITIONS=314} [2022-11-16 11:37:36,032 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 52 predicate places. [2022-11-16 11:37:36,032 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 314 transitions, 969 flow [2022-11-16 11:37:36,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 220.8235294117647) internal successors, (3754), 17 states have internal predecessors, (3754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:36,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:36,034 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:36,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:37:36,034 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:37:36,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:36,035 INFO L85 PathProgramCache]: Analyzing trace with hash -37964399, now seen corresponding path program 1 times [2022-11-16 11:37:36,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:36,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001489096] [2022-11-16 11:37:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:36,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:44,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:44,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001489096] [2022-11-16 11:37:44,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001489096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:44,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:44,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:37:44,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230272360] [2022-11-16 11:37:44,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:44,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:37:44,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:44,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:37:44,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:37:44,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 307 [2022-11-16 11:37:44,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 314 transitions, 969 flow. Second operand has 22 states, 22 states have (on average 208.6818181818182) internal successors, (4591), 22 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:44,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:44,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 307 [2022-11-16 11:37:44,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:49,662 INFO L130 PetriNetUnfolder]: 1760/7846 cut-off events. [2022-11-16 11:37:49,662 INFO L131 PetriNetUnfolder]: For 967/971 co-relation queries the response was YES. [2022-11-16 11:37:49,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12349 conditions, 7846 events. 1760/7846 cut-off events. For 967/971 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 70422 event pairs, 770 based on Foata normal form. 5/7146 useless extension candidates. Maximal degree in co-relation 12321. Up to 2666 conditions per place. [2022-11-16 11:37:49,734 INFO L137 encePairwiseOnDemand]: 286/307 looper letters, 102 selfloop transitions, 44 changer transitions 0/347 dead transitions. [2022-11-16 11:37:49,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 347 transitions, 1369 flow [2022-11-16 11:37:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:37:49,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:37:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5081 transitions. [2022-11-16 11:37:49,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6896036916395223 [2022-11-16 11:37:49,745 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5081 transitions. [2022-11-16 11:37:49,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5081 transitions. [2022-11-16 11:37:49,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:49,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5081 transitions. [2022-11-16 11:37:49,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 211.70833333333334) internal successors, (5081), 24 states have internal predecessors, (5081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:49,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 307.0) internal successors, (7675), 25 states have internal predecessors, (7675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:49,768 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 307.0) internal successors, (7675), 25 states have internal predecessors, (7675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:49,768 INFO L175 Difference]: Start difference. First operand has 339 places, 314 transitions, 969 flow. Second operand 24 states and 5081 transitions. [2022-11-16 11:37:49,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 347 transitions, 1369 flow [2022-11-16 11:37:49,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 347 transitions, 1342 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-16 11:37:49,783 INFO L231 Difference]: Finished difference. Result has 357 places, 321 transitions, 1104 flow [2022-11-16 11:37:49,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1104, PETRI_PLACES=357, PETRI_TRANSITIONS=321} [2022-11-16 11:37:49,785 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 70 predicate places. [2022-11-16 11:37:49,785 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 321 transitions, 1104 flow [2022-11-16 11:37:49,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 208.6818181818182) internal successors, (4591), 22 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:49,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:49,786 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:49,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:37:49,787 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:37:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:49,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1336824221, now seen corresponding path program 2 times [2022-11-16 11:37:49,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:49,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887080788] [2022-11-16 11:37:49,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:49,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:57,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:57,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887080788] [2022-11-16 11:37:57,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887080788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:57,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:57,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:37:57,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948112605] [2022-11-16 11:37:57,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:57,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:37:57,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:57,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:37:57,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:37:57,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 307 [2022-11-16 11:37:57,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 321 transitions, 1104 flow. Second operand has 22 states, 22 states have (on average 208.6818181818182) internal successors, (4591), 22 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:57,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:57,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 307 [2022-11-16 11:37:57,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:38:04,835 INFO L130 PetriNetUnfolder]: 1603/7625 cut-off events. [2022-11-16 11:38:04,835 INFO L131 PetriNetUnfolder]: For 1119/1123 co-relation queries the response was YES. [2022-11-16 11:38:04,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12028 conditions, 7625 events. 1603/7625 cut-off events. For 1119/1123 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 70009 event pairs, 771 based on Foata normal form. 5/6949 useless extension candidates. Maximal degree in co-relation 11995. Up to 2412 conditions per place. [2022-11-16 11:38:04,972 INFO L137 encePairwiseOnDemand]: 286/307 looper letters, 90 selfloop transitions, 42 changer transitions 0/333 dead transitions. [2022-11-16 11:38:04,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 333 transitions, 1399 flow [2022-11-16 11:38:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:38:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 11:38:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4647 transitions. [2022-11-16 11:38:04,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6880367189813444 [2022-11-16 11:38:04,980 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4647 transitions. [2022-11-16 11:38:04,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4647 transitions. [2022-11-16 11:38:04,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:38:04,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4647 transitions. [2022-11-16 11:38:04,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 211.22727272727272) internal successors, (4647), 22 states have internal predecessors, (4647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:05,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:05,003 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:05,003 INFO L175 Difference]: Start difference. First operand has 357 places, 321 transitions, 1104 flow. Second operand 22 states and 4647 transitions. [2022-11-16 11:38:05,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 333 transitions, 1399 flow [2022-11-16 11:38:05,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 333 transitions, 1328 flow, removed 7 selfloop flow, removed 20 redundant places. [2022-11-16 11:38:05,020 INFO L231 Difference]: Finished difference. Result has 356 places, 318 transitions, 1104 flow [2022-11-16 11:38:05,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1104, PETRI_PLACES=356, PETRI_TRANSITIONS=318} [2022-11-16 11:38:05,021 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 69 predicate places. [2022-11-16 11:38:05,022 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 318 transitions, 1104 flow [2022-11-16 11:38:05,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 208.6818181818182) internal successors, (4591), 22 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:05,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:38:05,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:05,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:38:05,024 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:38:05,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:05,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1498429554, now seen corresponding path program 1 times [2022-11-16 11:38:05,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:05,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063134273] [2022-11-16 11:38:05,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:05,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:09,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:09,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063134273] [2022-11-16 11:38:09,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063134273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:09,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:09,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-16 11:38:09,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140697628] [2022-11-16 11:38:09,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:09,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 11:38:09,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:09,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 11:38:09,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-11-16 11:38:09,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 307 [2022-11-16 11:38:09,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 318 transitions, 1104 flow. Second operand has 31 states, 31 states have (on average 197.0) internal successors, (6107), 31 states have internal predecessors, (6107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:09,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:38:09,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 307 [2022-11-16 11:38:09,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:38:17,195 INFO L130 PetriNetUnfolder]: 2432/10348 cut-off events. [2022-11-16 11:38:17,195 INFO L131 PetriNetUnfolder]: For 1526/1530 co-relation queries the response was YES. [2022-11-16 11:38:17,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16709 conditions, 10348 events. 2432/10348 cut-off events. For 1526/1530 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 101775 event pairs, 1938 based on Foata normal form. 2/9333 useless extension candidates. Maximal degree in co-relation 16681. Up to 3710 conditions per place. [2022-11-16 11:38:17,304 INFO L137 encePairwiseOnDemand]: 266/307 looper letters, 131 selfloop transitions, 70 changer transitions 0/386 dead transitions. [2022-11-16 11:38:17,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 386 transitions, 1785 flow [2022-11-16 11:38:17,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:38:17,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:38:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 7601 transitions. [2022-11-16 11:38:17,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.651551517229556 [2022-11-16 11:38:17,317 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 7601 transitions. [2022-11-16 11:38:17,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 7601 transitions. [2022-11-16 11:38:17,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:38:17,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 7601 transitions. [2022-11-16 11:38:17,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 200.02631578947367) internal successors, (7601), 38 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:17,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 307.0) internal successors, (11973), 39 states have internal predecessors, (11973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:17,349 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 307.0) internal successors, (11973), 39 states have internal predecessors, (11973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:17,350 INFO L175 Difference]: Start difference. First operand has 356 places, 318 transitions, 1104 flow. Second operand 38 states and 7601 transitions. [2022-11-16 11:38:17,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 386 transitions, 1785 flow [2022-11-16 11:38:17,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 386 transitions, 1710 flow, removed 2 selfloop flow, removed 20 redundant places. [2022-11-16 11:38:17,371 INFO L231 Difference]: Finished difference. Result has 388 places, 352 transitions, 1490 flow [2022-11-16 11:38:17,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1490, PETRI_PLACES=388, PETRI_TRANSITIONS=352} [2022-11-16 11:38:17,373 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 101 predicate places. [2022-11-16 11:38:17,373 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 352 transitions, 1490 flow [2022-11-16 11:38:17,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 197.0) internal successors, (6107), 31 states have internal predecessors, (6107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:17,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:38:17,375 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:17,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:38:17,376 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:38:17,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:17,376 INFO L85 PathProgramCache]: Analyzing trace with hash 793324901, now seen corresponding path program 1 times [2022-11-16 11:38:17,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:17,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131158512] [2022-11-16 11:38:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:17,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:19,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:19,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131158512] [2022-11-16 11:38:19,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131158512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:19,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:19,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 11:38:19,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681544627] [2022-11-16 11:38:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:19,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:38:19,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:19,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:38:19,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:38:19,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 307 [2022-11-16 11:38:19,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 352 transitions, 1490 flow. Second operand has 23 states, 23 states have (on average 210.65217391304347) internal successors, (4845), 23 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:19,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:38:19,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 307 [2022-11-16 11:38:19,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:38:29,654 INFO L130 PetriNetUnfolder]: 6088/20261 cut-off events. [2022-11-16 11:38:29,654 INFO L131 PetriNetUnfolder]: For 3388/3388 co-relation queries the response was YES. [2022-11-16 11:38:29,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36174 conditions, 20261 events. 6088/20261 cut-off events. For 3388/3388 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 206500 event pairs, 1100 based on Foata normal form. 124/18923 useless extension candidates. Maximal degree in co-relation 36133. Up to 3042 conditions per place. [2022-11-16 11:38:29,957 INFO L137 encePairwiseOnDemand]: 276/307 looper letters, 405 selfloop transitions, 142 changer transitions 0/747 dead transitions. [2022-11-16 11:38:29,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 747 transitions, 3697 flow [2022-11-16 11:38:29,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 11:38:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-16 11:38:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8806 transitions. [2022-11-16 11:38:29,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.717100977198697 [2022-11-16 11:38:29,971 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8806 transitions. [2022-11-16 11:38:29,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8806 transitions. [2022-11-16 11:38:29,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:38:29,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8806 transitions. [2022-11-16 11:38:29,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 220.15) internal successors, (8806), 40 states have internal predecessors, (8806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:30,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 307.0) internal successors, (12587), 41 states have internal predecessors, (12587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:30,008 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 307.0) internal successors, (12587), 41 states have internal predecessors, (12587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:30,008 INFO L175 Difference]: Start difference. First operand has 388 places, 352 transitions, 1490 flow. Second operand 40 states and 8806 transitions. [2022-11-16 11:38:30,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 747 transitions, 3697 flow [2022-11-16 11:38:30,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 747 transitions, 3430 flow, removed 87 selfloop flow, removed 20 redundant places. [2022-11-16 11:38:30,060 INFO L231 Difference]: Finished difference. Result has 418 places, 453 transitions, 2092 flow [2022-11-16 11:38:30,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2092, PETRI_PLACES=418, PETRI_TRANSITIONS=453} [2022-11-16 11:38:30,062 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 131 predicate places. [2022-11-16 11:38:30,062 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 453 transitions, 2092 flow [2022-11-16 11:38:30,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 210.65217391304347) internal successors, (4845), 23 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:30,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:38:30,064 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:30,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:38:30,064 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:38:30,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1872485862, now seen corresponding path program 1 times [2022-11-16 11:38:30,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:30,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984474037] [2022-11-16 11:38:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:30,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:34,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:34,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984474037] [2022-11-16 11:38:34,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984474037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:34,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:34,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-16 11:38:34,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066315632] [2022-11-16 11:38:34,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:34,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 11:38:34,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:34,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 11:38:34,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:38:34,973 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 307 [2022-11-16 11:38:34,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 453 transitions, 2092 flow. Second operand has 34 states, 34 states have (on average 186.11764705882354) internal successors, (6328), 34 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:34,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:38:34,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 307 [2022-11-16 11:38:34,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:38:50,152 INFO L130 PetriNetUnfolder]: 7103/25355 cut-off events. [2022-11-16 11:38:50,152 INFO L131 PetriNetUnfolder]: For 9194/9429 co-relation queries the response was YES. [2022-11-16 11:38:50,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48113 conditions, 25355 events. 7103/25355 cut-off events. For 9194/9429 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 276496 event pairs, 3574 based on Foata normal form. 26/22967 useless extension candidates. Maximal degree in co-relation 48063. Up to 10593 conditions per place. [2022-11-16 11:38:50,536 INFO L137 encePairwiseOnDemand]: 266/307 looper letters, 269 selfloop transitions, 117 changer transitions 0/574 dead transitions. [2022-11-16 11:38:50,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 574 transitions, 3314 flow [2022-11-16 11:38:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 11:38:50,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-16 11:38:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 8895 transitions. [2022-11-16 11:38:50,549 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6164668376186846 [2022-11-16 11:38:50,549 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 8895 transitions. [2022-11-16 11:38:50,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 8895 transitions. [2022-11-16 11:38:50,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:38:50,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 8895 transitions. [2022-11-16 11:38:50,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 189.25531914893617) internal successors, (8895), 47 states have internal predecessors, (8895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:50,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 307.0) internal successors, (14736), 48 states have internal predecessors, (14736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:50,584 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 307.0) internal successors, (14736), 48 states have internal predecessors, (14736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:50,585 INFO L175 Difference]: Start difference. First operand has 418 places, 453 transitions, 2092 flow. Second operand 47 states and 8895 transitions. [2022-11-16 11:38:50,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 574 transitions, 3314 flow [2022-11-16 11:38:50,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 574 transitions, 3222 flow, removed 39 selfloop flow, removed 7 redundant places. [2022-11-16 11:38:50,711 INFO L231 Difference]: Finished difference. Result has 467 places, 479 transitions, 2513 flow [2022-11-16 11:38:50,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=2513, PETRI_PLACES=467, PETRI_TRANSITIONS=479} [2022-11-16 11:38:50,712 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 180 predicate places. [2022-11-16 11:38:50,712 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 479 transitions, 2513 flow [2022-11-16 11:38:50,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 186.11764705882354) internal successors, (6328), 34 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:50,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:38:50,713 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:50,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:38:50,714 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:38:50,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:50,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1149830152, now seen corresponding path program 2 times [2022-11-16 11:38:50,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:50,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964875072] [2022-11-16 11:38:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:50,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:55,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:55,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964875072] [2022-11-16 11:38:55,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964875072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:55,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:55,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-16 11:38:55,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852660328] [2022-11-16 11:38:55,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:55,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 11:38:55,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:55,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 11:38:55,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:38:55,382 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 307 [2022-11-16 11:38:55,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 479 transitions, 2513 flow. Second operand has 34 states, 34 states have (on average 193.88235294117646) internal successors, (6592), 34 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:55,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:38:55,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 307 [2022-11-16 11:38:55,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:08,735 INFO L130 PetriNetUnfolder]: 7003/22750 cut-off events. [2022-11-16 11:39:08,735 INFO L131 PetriNetUnfolder]: For 11233/11435 co-relation queries the response was YES. [2022-11-16 11:39:09,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46155 conditions, 22750 events. 7003/22750 cut-off events. For 11233/11435 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 238285 event pairs, 3184 based on Foata normal form. 19/20779 useless extension candidates. Maximal degree in co-relation 46095. Up to 10501 conditions per place. [2022-11-16 11:39:09,086 INFO L137 encePairwiseOnDemand]: 268/307 looper letters, 253 selfloop transitions, 108 changer transitions 0/557 dead transitions. [2022-11-16 11:39:09,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 557 transitions, 3516 flow [2022-11-16 11:39:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:39:09,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 11:39:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7305 transitions. [2022-11-16 11:39:09,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6431023857733955 [2022-11-16 11:39:09,097 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7305 transitions. [2022-11-16 11:39:09,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7305 transitions. [2022-11-16 11:39:09,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:09,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7305 transitions. [2022-11-16 11:39:09,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 197.43243243243242) internal successors, (7305), 37 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:09,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:09,125 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:09,126 INFO L175 Difference]: Start difference. First operand has 467 places, 479 transitions, 2513 flow. Second operand 37 states and 7305 transitions. [2022-11-16 11:39:09,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 557 transitions, 3516 flow [2022-11-16 11:39:09,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 557 transitions, 3369 flow, removed 20 selfloop flow, removed 25 redundant places. [2022-11-16 11:39:09,444 INFO L231 Difference]: Finished difference. Result has 487 places, 489 transitions, 2762 flow [2022-11-16 11:39:09,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2762, PETRI_PLACES=487, PETRI_TRANSITIONS=489} [2022-11-16 11:39:09,446 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 200 predicate places. [2022-11-16 11:39:09,446 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 489 transitions, 2762 flow [2022-11-16 11:39:09,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 193.88235294117646) internal successors, (6592), 34 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:09,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:09,448 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:09,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:39:09,448 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:39:09,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:09,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1900628701, now seen corresponding path program 1 times [2022-11-16 11:39:09,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:09,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960365053] [2022-11-16 11:39:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:09,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:11,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:11,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:11,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960365053] [2022-11-16 11:39:11,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960365053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:11,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:11,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 11:39:11,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400175254] [2022-11-16 11:39:11,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:11,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:39:11,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:11,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:39:11,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:39:11,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 307 [2022-11-16 11:39:11,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 489 transitions, 2762 flow. Second operand has 25 states, 25 states have (on average 206.56) internal successors, (5164), 25 states have internal predecessors, (5164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:11,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:11,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 307 [2022-11-16 11:39:11,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:24,812 INFO L130 PetriNetUnfolder]: 7357/24822 cut-off events. [2022-11-16 11:39:24,812 INFO L131 PetriNetUnfolder]: For 14877/15101 co-relation queries the response was YES. [2022-11-16 11:39:25,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50423 conditions, 24822 events. 7357/24822 cut-off events. For 14877/15101 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 263393 event pairs, 1328 based on Foata normal form. 180/23004 useless extension candidates. Maximal degree in co-relation 50356. Up to 2679 conditions per place. [2022-11-16 11:39:25,210 INFO L137 encePairwiseOnDemand]: 276/307 looper letters, 424 selfloop transitions, 191 changer transitions 0/816 dead transitions. [2022-11-16 11:39:25,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 816 transitions, 5018 flow [2022-11-16 11:39:25,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 11:39:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-16 11:39:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 8805 transitions. [2022-11-16 11:39:25,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6995312624136013 [2022-11-16 11:39:25,222 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 8805 transitions. [2022-11-16 11:39:25,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 8805 transitions. [2022-11-16 11:39:25,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:25,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 8805 transitions. [2022-11-16 11:39:25,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 214.7560975609756) internal successors, (8805), 41 states have internal predecessors, (8805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:25,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 307.0) internal successors, (12894), 42 states have internal predecessors, (12894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:25,252 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 307.0) internal successors, (12894), 42 states have internal predecessors, (12894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:25,252 INFO L175 Difference]: Start difference. First operand has 487 places, 489 transitions, 2762 flow. Second operand 41 states and 8805 transitions. [2022-11-16 11:39:25,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 816 transitions, 5018 flow [2022-11-16 11:39:25,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 816 transitions, 4861 flow, removed 7 selfloop flow, removed 27 redundant places. [2022-11-16 11:39:25,457 INFO L231 Difference]: Finished difference. Result has 509 places, 554 transitions, 3565 flow [2022-11-16 11:39:25,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3565, PETRI_PLACES=509, PETRI_TRANSITIONS=554} [2022-11-16 11:39:25,459 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 222 predicate places. [2022-11-16 11:39:25,459 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 554 transitions, 3565 flow [2022-11-16 11:39:25,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 206.56) internal successors, (5164), 25 states have internal predecessors, (5164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:25,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:25,460 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:25,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:39:25,461 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-16 11:39:25,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash -744459785, now seen corresponding path program 1 times [2022-11-16 11:39:25,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:25,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496496761] [2022-11-16 11:39:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:25,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:28,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:28,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496496761] [2022-11-16 11:39:28,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496496761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:28,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:28,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 11:39:28,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008792085] [2022-11-16 11:39:28,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:28,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:39:28,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:28,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:39:28,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:39:28,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 307 [2022-11-16 11:39:28,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 554 transitions, 3565 flow. Second operand has 27 states, 27 states have (on average 211.22222222222223) internal successors, (5703), 27 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:28,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:28,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 307 [2022-11-16 11:39:28,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand