./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 21:03:44,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:03:44,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:03:44,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:03:44,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:03:44,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:03:44,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:03:44,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:03:44,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:03:44,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:03:44,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:03:44,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:03:44,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:03:44,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:03:44,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:03:44,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:03:44,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:03:44,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:03:44,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:03:44,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:03:44,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:03:44,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:03:44,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:03:44,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:03:44,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:03:44,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:03:44,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:03:44,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:03:44,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:03:44,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:03:44,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:03:44,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:03:44,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:03:44,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:03:44,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:03:44,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:03:44,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:03:44,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:03:44,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:03:44,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:03:44,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:03:44,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:03:44,775 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:03:44,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:03:44,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:03:44,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:03:44,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:03:44,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:03:44,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:03:44,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:03:44,779 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:03:44,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:03:44,780 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:03:44,781 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:03:44,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:03:44,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:03:44,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:03:44,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:03:44,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:03:44,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:03:44,783 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:03:44,784 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:03:44,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:03:44,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:03:44,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:03:44,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:03:44,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:03:44,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:03:44,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:03:44,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:03:44,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:03:44,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:03:44,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:03:44,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:03:44,789 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:03:44,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:03:44,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:03:44,790 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_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2022-11-18 21:03:45,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:03:45,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:03:45,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:03:45,208 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:03:45,209 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:03:45,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/queue_longest.i [2022-11-18 21:03:45,326 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/data/8fc10346a/0d1ff9f229334bf5a29da7af1424e81e/FLAG19dfa3d1b [2022-11-18 21:03:46,053 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:03:46,053 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/sv-benchmarks/c/pthread/queue_longest.i [2022-11-18 21:03:46,096 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/data/8fc10346a/0d1ff9f229334bf5a29da7af1424e81e/FLAG19dfa3d1b [2022-11-18 21:03:46,244 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/data/8fc10346a/0d1ff9f229334bf5a29da7af1424e81e [2022-11-18 21:03:46,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:03:46,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:03:46,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:03:46,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:03:46,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:03:46,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:03:46" (1/1) ... [2022-11-18 21:03:46,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5e66a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:46, skipping insertion in model container [2022-11-18 21:03:46,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:03:46" (1/1) ... [2022-11-18 21:03:46,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:03:46,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:03:46,982 WARN L234 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_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-18 21:03:46,994 WARN L234 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_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-18 21:03:46,998 WARN L234 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_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-18 21:03:47,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:03:47,016 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:03:47,069 WARN L234 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_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-18 21:03:47,072 WARN L234 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_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-18 21:03:47,076 WARN L234 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_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-18 21:03:47,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:03:47,146 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:03:47,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47 WrapperNode [2022-11-18 21:03:47,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:03:47,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:03:47,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:03:47,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:03:47,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47" (1/1) ... [2022-11-18 21:03:47,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47" (1/1) ... [2022-11-18 21:03:47,249 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 259 [2022-11-18 21:03:47,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:03:47,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:03:47,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:03:47,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:03:47,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47" (1/1) ... [2022-11-18 21:03:47,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47" (1/1) ... [2022-11-18 21:03:47,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47" (1/1) ... [2022-11-18 21:03:47,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47" (1/1) ... [2022-11-18 21:03:47,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47" (1/1) ... [2022-11-18 21:03:47,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47" (1/1) ... [2022-11-18 21:03:47,322 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47" (1/1) ... [2022-11-18 21:03:47,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47" (1/1) ... [2022-11-18 21:03:47,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:03:47,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:03:47,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:03:47,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:03:47,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47" (1/1) ... [2022-11-18 21:03:47,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:03:47,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:47,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:03:47,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:03:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 21:03:47,435 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 21:03:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 21:03:47,435 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 21:03:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:03:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:03:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:03:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:03:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 21:03:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:03:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:03:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:03:47,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:03:47,439 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:03:47,640 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:03:47,656 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:03:48,455 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:03:48,473 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:03:48,482 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 21:03:48,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:03:48 BoogieIcfgContainer [2022-11-18 21:03:48,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:03:48,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:03:48,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:03:48,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:03:48,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:03:46" (1/3) ... [2022-11-18 21:03:48,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e76183d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:03:48, skipping insertion in model container [2022-11-18 21:03:48,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:47" (2/3) ... [2022-11-18 21:03:48,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e76183d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:03:48, skipping insertion in model container [2022-11-18 21:03:48,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:03:48" (3/3) ... [2022-11-18 21:03:48,501 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2022-11-18 21:03:48,513 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:03:48,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:03:48,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-18 21:03:48,527 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:03:48,697 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 21:03:48,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 305 transitions, 626 flow [2022-11-18 21:03:48,944 INFO L130 PetriNetUnfolder]: 15/303 cut-off events. [2022-11-18 21:03:48,944 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 21:03:48,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 303 events. 15/303 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 469 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-11-18 21:03:48,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 305 transitions, 626 flow [2022-11-18 21:03:48,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 293 transitions, 595 flow [2022-11-18 21:03:48,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:03:48,988 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;@204ede6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:03:48,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-18 21:03:49,031 INFO L130 PetriNetUnfolder]: 3/110 cut-off events. [2022-11-18 21:03:49,032 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:03:49,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:49,033 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] [2022-11-18 21:03:49,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:03:49,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:49,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1172668946, now seen corresponding path program 1 times [2022-11-18 21:03:49,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:49,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053667295] [2022-11-18 21:03:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:49,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:50,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:50,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053667295] [2022-11-18 21:03:50,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053667295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:50,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:50,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 21:03:50,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245693401] [2022-11-18 21:03:50,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:50,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:03:50,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:50,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:03:50,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:03:50,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 305 [2022-11-18 21:03:50,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 293 transitions, 595 flow. Second operand has 12 states, 12 states have (on average 230.33333333333334) internal successors, (2764), 12 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:50,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:50,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 305 [2022-11-18 21:03:50,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:52,799 INFO L130 PetriNetUnfolder]: 1003/4825 cut-off events. [2022-11-18 21:03:52,802 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-11-18 21:03:52,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6349 conditions, 4825 events. 1003/4825 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 42090 event pairs, 789 based on Foata normal form. 203/4356 useless extension candidates. Maximal degree in co-relation 6146. Up to 1435 conditions per place. [2022-11-18 21:03:52,844 INFO L137 encePairwiseOnDemand]: 287/305 looper letters, 52 selfloop transitions, 12 changer transitions 0/279 dead transitions. [2022-11-18 21:03:52,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 279 transitions, 695 flow [2022-11-18 21:03:52,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:03:52,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 21:03:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3034 transitions. [2022-11-18 21:03:52,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7651954602774275 [2022-11-18 21:03:52,871 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3034 transitions. [2022-11-18 21:03:52,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3034 transitions. [2022-11-18 21:03:52,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:52,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3034 transitions. [2022-11-18 21:03:52,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 233.3846153846154) internal successors, (3034), 13 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:52,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:52,910 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:52,912 INFO L175 Difference]: Start difference. First operand has 285 places, 293 transitions, 595 flow. Second operand 13 states and 3034 transitions. [2022-11-18 21:03:52,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 279 transitions, 695 flow [2022-11-18 21:03:52,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 279 transitions, 690 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:03:52,931 INFO L231 Difference]: Finished difference. Result has 286 places, 279 transitions, 586 flow [2022-11-18 21:03:52,934 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=586, PETRI_PLACES=286, PETRI_TRANSITIONS=279} [2022-11-18 21:03:52,938 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 1 predicate places. [2022-11-18 21:03:52,939 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 279 transitions, 586 flow [2022-11-18 21:03:52,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 230.33333333333334) internal successors, (2764), 12 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:52,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:52,941 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] [2022-11-18 21:03:52,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:03:52,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:03:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:52,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2077670852, now seen corresponding path program 1 times [2022-11-18 21:03:52,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:52,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028015505] [2022-11-18 21:03:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:52,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:53,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:53,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028015505] [2022-11-18 21:03:53,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028015505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:53,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:53,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:03:53,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301265420] [2022-11-18 21:03:53,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:53,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:03:53,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:53,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:03:53,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:53,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-18 21:03:53,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 279 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:53,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:53,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-18 21:03:53,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:53,213 INFO L130 PetriNetUnfolder]: 34/483 cut-off events. [2022-11-18 21:03:53,213 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-11-18 21:03:53,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 483 events. 34/483 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1777 event pairs, 3 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 485. Up to 39 conditions per place. [2022-11-18 21:03:53,219 INFO L137 encePairwiseOnDemand]: 298/305 looper letters, 21 selfloop transitions, 4 changer transitions 0/289 dead transitions. [2022-11-18 21:03:53,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 289 transitions, 659 flow [2022-11-18 21:03:53,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:03:53,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:03:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1428 transitions. [2022-11-18 21:03:53,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9363934426229508 [2022-11-18 21:03:53,248 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1428 transitions. [2022-11-18 21:03:53,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1428 transitions. [2022-11-18 21:03:53,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:53,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1428 transitions. [2022-11-18 21:03:53,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.6) internal successors, (1428), 5 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:53,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:53,257 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:53,258 INFO L175 Difference]: Start difference. First operand has 286 places, 279 transitions, 586 flow. Second operand 5 states and 1428 transitions. [2022-11-18 21:03:53,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 289 transitions, 659 flow [2022-11-18 21:03:53,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 289 transitions, 636 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 21:03:53,264 INFO L231 Difference]: Finished difference. Result has 282 places, 282 transitions, 595 flow [2022-11-18 21:03:53,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=595, PETRI_PLACES=282, PETRI_TRANSITIONS=282} [2022-11-18 21:03:53,266 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, -3 predicate places. [2022-11-18 21:03:53,266 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 282 transitions, 595 flow [2022-11-18 21:03:53,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:53,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:53,268 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] [2022-11-18 21:03:53,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:03:53,268 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:03:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1235614095, now seen corresponding path program 1 times [2022-11-18 21:03:53,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:53,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778137342] [2022-11-18 21:03:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:53,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:04,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:04,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:04,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778137342] [2022-11-18 21:04:04,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778137342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:04,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:04,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 21:04:04,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397090398] [2022-11-18 21:04:04,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:04,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 21:04:04,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:04,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 21:04:04,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:04:04,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 305 [2022-11-18 21:04:04,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 282 transitions, 595 flow. Second operand has 21 states, 21 states have (on average 210.66666666666666) internal successors, (4424), 21 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:04,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:04,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 305 [2022-11-18 21:04:04,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:15,520 INFO L130 PetriNetUnfolder]: 3565/10831 cut-off events. [2022-11-18 21:04:15,520 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-18 21:04:15,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16627 conditions, 10831 events. 3565/10831 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 104504 event pairs, 2758 based on Foata normal form. 0/9490 useless extension candidates. Maximal degree in co-relation 16535. Up to 4855 conditions per place. [2022-11-18 21:04:15,615 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 119 selfloop transitions, 28 changer transitions 0/345 dead transitions. [2022-11-18 21:04:15,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 345 transitions, 1021 flow [2022-11-18 21:04:15,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 21:04:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 21:04:15,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4540 transitions. [2022-11-18 21:04:15,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7088212334113974 [2022-11-18 21:04:15,626 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4540 transitions. [2022-11-18 21:04:15,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4540 transitions. [2022-11-18 21:04:15,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:15,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4540 transitions. [2022-11-18 21:04:15,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 216.1904761904762) internal successors, (4540), 21 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:15,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:15,749 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:15,749 INFO L175 Difference]: Start difference. First operand has 282 places, 282 transitions, 595 flow. Second operand 21 states and 4540 transitions. [2022-11-18 21:04:15,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 345 transitions, 1021 flow [2022-11-18 21:04:15,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 345 transitions, 1019 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:04:15,758 INFO L231 Difference]: Finished difference. Result has 310 places, 303 transitions, 752 flow [2022-11-18 21:04:15,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=752, PETRI_PLACES=310, PETRI_TRANSITIONS=303} [2022-11-18 21:04:15,760 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 25 predicate places. [2022-11-18 21:04:15,761 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 303 transitions, 752 flow [2022-11-18 21:04:15,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 210.66666666666666) internal successors, (4424), 21 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:15,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:15,763 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] [2022-11-18 21:04:15,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 21:04:15,764 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:04:15,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1617130361, now seen corresponding path program 1 times [2022-11-18 21:04:15,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:15,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138198111] [2022-11-18 21:04:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:18,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:18,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138198111] [2022-11-18 21:04:18,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138198111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:18,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:18,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 21:04:18,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517042993] [2022-11-18 21:04:18,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:18,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 21:04:18,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:18,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 21:04:18,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:04:18,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-18 21:04:18,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 303 transitions, 752 flow. Second operand has 20 states, 20 states have (on average 203.1) internal successors, (4062), 20 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:18,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:18,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-18 21:04:18,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:23,104 INFO L130 PetriNetUnfolder]: 4207/14457 cut-off events. [2022-11-18 21:04:23,105 INFO L131 PetriNetUnfolder]: For 1205/1209 co-relation queries the response was YES. [2022-11-18 21:04:23,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22828 conditions, 14457 events. 4207/14457 cut-off events. For 1205/1209 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 150759 event pairs, 902 based on Foata normal form. 102/12990 useless extension candidates. Maximal degree in co-relation 22712. Up to 4446 conditions per place. [2022-11-18 21:04:23,217 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 190 selfloop transitions, 44 changer transitions 0/426 dead transitions. [2022-11-18 21:04:23,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 426 transitions, 1524 flow [2022-11-18 21:04:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 21:04:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 21:04:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4644 transitions. [2022-11-18 21:04:23,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6921013412816691 [2022-11-18 21:04:23,236 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4644 transitions. [2022-11-18 21:04:23,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4644 transitions. [2022-11-18 21:04:23,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:23,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4644 transitions. [2022-11-18 21:04:23,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 211.0909090909091) internal successors, (4644), 22 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:23,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 305.0) internal successors, (7015), 23 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:23,286 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 305.0) internal successors, (7015), 23 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:23,296 INFO L175 Difference]: Start difference. First operand has 310 places, 303 transitions, 752 flow. Second operand 22 states and 4644 transitions. [2022-11-18 21:04:23,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 426 transitions, 1524 flow [2022-11-18 21:04:23,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 426 transitions, 1509 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 21:04:23,343 INFO L231 Difference]: Finished difference. Result has 330 places, 332 transitions, 995 flow [2022-11-18 21:04:23,344 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=995, PETRI_PLACES=330, PETRI_TRANSITIONS=332} [2022-11-18 21:04:23,346 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 45 predicate places. [2022-11-18 21:04:23,346 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 332 transitions, 995 flow [2022-11-18 21:04:23,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 203.1) internal successors, (4062), 20 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:23,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:23,350 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] [2022-11-18 21:04:23,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:04:23,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:04:23,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:23,352 INFO L85 PathProgramCache]: Analyzing trace with hash -920795431, now seen corresponding path program 1 times [2022-11-18 21:04:23,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:23,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135284183] [2022-11-18 21:04:23,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:23,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:04:23,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:23,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135284183] [2022-11-18 21:04:23,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135284183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:23,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:23,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:04:23,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609756857] [2022-11-18 21:04:23,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:23,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:04:23,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:04:23,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:04:23,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-18 21:04:23,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 332 transitions, 995 flow. Second operand has 4 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:23,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:23,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-18 21:04:23,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:24,102 INFO L130 PetriNetUnfolder]: 167/2208 cut-off events. [2022-11-18 21:04:24,105 INFO L131 PetriNetUnfolder]: For 253/254 co-relation queries the response was YES. [2022-11-18 21:04:24,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2996 conditions, 2208 events. 167/2208 cut-off events. For 253/254 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 19089 event pairs, 22 based on Foata normal form. 18/1984 useless extension candidates. Maximal degree in co-relation 2903. Up to 140 conditions per place. [2022-11-18 21:04:24,131 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 13 selfloop transitions, 8 changer transitions 0/335 dead transitions. [2022-11-18 21:04:24,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 335 transitions, 1044 flow [2022-11-18 21:04:24,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:04:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:04:24,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1419 transitions. [2022-11-18 21:04:24,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9304918032786885 [2022-11-18 21:04:24,139 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1419 transitions. [2022-11-18 21:04:24,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1419 transitions. [2022-11-18 21:04:24,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:24,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1419 transitions. [2022-11-18 21:04:24,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.8) internal successors, (1419), 5 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:24,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:24,152 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:24,153 INFO L175 Difference]: Start difference. First operand has 330 places, 332 transitions, 995 flow. Second operand 5 states and 1419 transitions. [2022-11-18 21:04:24,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 335 transitions, 1044 flow [2022-11-18 21:04:24,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 335 transitions, 1011 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-18 21:04:24,170 INFO L231 Difference]: Finished difference. Result has 326 places, 332 transitions, 982 flow [2022-11-18 21:04:24,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=982, PETRI_PLACES=326, PETRI_TRANSITIONS=332} [2022-11-18 21:04:24,174 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 41 predicate places. [2022-11-18 21:04:24,175 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 332 transitions, 982 flow [2022-11-18 21:04:24,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:24,176 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:24,176 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] [2022-11-18 21:04:24,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:04:24,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:04:24,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:24,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1520113578, now seen corresponding path program 1 times [2022-11-18 21:04:24,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:24,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346810759] [2022-11-18 21:04:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:24,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:24,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:24,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346810759] [2022-11-18 21:04:24,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346810759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:24,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440727324] [2022-11-18 21:04:24,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:24,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:24,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:24,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:24,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:04:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:24,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:04:24,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:24,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:24,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440727324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:24,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:04:24,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:04:24,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937328240] [2022-11-18 21:04:24,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:24,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:04:24,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:24,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:04:24,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:04:24,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-18 21:04:24,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 332 transitions, 982 flow. Second operand has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:24,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:24,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-18 21:04:24,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:25,445 INFO L130 PetriNetUnfolder]: 165/2190 cut-off events. [2022-11-18 21:04:25,445 INFO L131 PetriNetUnfolder]: For 387/388 co-relation queries the response was YES. [2022-11-18 21:04:25,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3064 conditions, 2190 events. 165/2190 cut-off events. For 387/388 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 18902 event pairs, 5 based on Foata normal form. 18/1969 useless extension candidates. Maximal degree in co-relation 2978. Up to 95 conditions per place. [2022-11-18 21:04:25,458 INFO L137 encePairwiseOnDemand]: 300/305 looper letters, 19 selfloop transitions, 6 changer transitions 0/339 dead transitions. [2022-11-18 21:04:25,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 339 transitions, 1049 flow [2022-11-18 21:04:25,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:04:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:04:25,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1986 transitions. [2022-11-18 21:04:25,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302107728337237 [2022-11-18 21:04:25,465 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1986 transitions. [2022-11-18 21:04:25,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1986 transitions. [2022-11-18 21:04:25,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:25,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1986 transitions. [2022-11-18 21:04:25,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 283.7142857142857) internal successors, (1986), 7 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:25,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:25,478 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:25,479 INFO L175 Difference]: Start difference. First operand has 326 places, 332 transitions, 982 flow. Second operand 7 states and 1986 transitions. [2022-11-18 21:04:25,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 339 transitions, 1049 flow [2022-11-18 21:04:25,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 339 transitions, 1037 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:04:25,490 INFO L231 Difference]: Finished difference. Result has 328 places, 331 transitions, 978 flow [2022-11-18 21:04:25,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=978, PETRI_PLACES=328, PETRI_TRANSITIONS=331} [2022-11-18 21:04:25,496 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 43 predicate places. [2022-11-18 21:04:25,496 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 331 transitions, 978 flow [2022-11-18 21:04:25,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:25,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:25,498 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:25,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:25,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 21:04:25,710 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:04:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:25,711 INFO L85 PathProgramCache]: Analyzing trace with hash 931876677, now seen corresponding path program 1 times [2022-11-18 21:04:25,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:25,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078036451] [2022-11-18 21:04:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:25,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:25,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:25,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078036451] [2022-11-18 21:04:25,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078036451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:25,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:25,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:04:25,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263208050] [2022-11-18 21:04:25,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:25,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:04:25,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:25,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:04:25,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:04:25,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 305 [2022-11-18 21:04:25,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 331 transitions, 978 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:25,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:25,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 305 [2022-11-18 21:04:25,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:26,116 INFO L130 PetriNetUnfolder]: 70/1135 cut-off events. [2022-11-18 21:04:26,116 INFO L131 PetriNetUnfolder]: For 108/109 co-relation queries the response was YES. [2022-11-18 21:04:26,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1405 conditions, 1135 events. 70/1135 cut-off events. For 108/109 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4768 event pairs, 5 based on Foata normal form. 0/986 useless extension candidates. Maximal degree in co-relation 1382. Up to 38 conditions per place. [2022-11-18 21:04:26,128 INFO L137 encePairwiseOnDemand]: 301/305 looper letters, 10 selfloop transitions, 3 changer transitions 0/304 dead transitions. [2022-11-18 21:04:26,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 304 transitions, 851 flow [2022-11-18 21:04:26,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:04:26,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:04:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-11-18 21:04:26,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9530054644808743 [2022-11-18 21:04:26,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-11-18 21:04:26,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-11-18 21:04:26,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:26,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-11-18 21:04:26,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:26,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:26,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:26,140 INFO L175 Difference]: Start difference. First operand has 328 places, 331 transitions, 978 flow. Second operand 3 states and 872 transitions. [2022-11-18 21:04:26,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 304 transitions, 851 flow [2022-11-18 21:04:26,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 304 transitions, 767 flow, removed 2 selfloop flow, removed 21 redundant places. [2022-11-18 21:04:26,149 INFO L231 Difference]: Finished difference. Result has 305 places, 301 transitions, 745 flow [2022-11-18 21:04:26,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=745, PETRI_PLACES=305, PETRI_TRANSITIONS=301} [2022-11-18 21:04:26,151 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 20 predicate places. [2022-11-18 21:04:26,151 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 301 transitions, 745 flow [2022-11-18 21:04:26,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:26,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:26,152 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] [2022-11-18 21:04:26,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:04:26,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:04:26,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:26,154 INFO L85 PathProgramCache]: Analyzing trace with hash 216499962, now seen corresponding path program 1 times [2022-11-18 21:04:26,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:26,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990629720] [2022-11-18 21:04:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:26,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:30,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:30,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990629720] [2022-11-18 21:04:30,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990629720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:30,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:30,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 21:04:30,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185037126] [2022-11-18 21:04:30,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:30,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 21:04:30,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:30,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 21:04:30,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:04:30,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 305 [2022-11-18 21:04:30,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 301 transitions, 745 flow. Second operand has 20 states, 20 states have (on average 210.9) internal successors, (4218), 20 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:30,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:30,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 305 [2022-11-18 21:04:30,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:34,499 INFO L130 PetriNetUnfolder]: 1697/7542 cut-off events. [2022-11-18 21:04:34,499 INFO L131 PetriNetUnfolder]: For 344/348 co-relation queries the response was YES. [2022-11-18 21:04:34,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11292 conditions, 7542 events. 1697/7542 cut-off events. For 344/348 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 70208 event pairs, 1405 based on Foata normal form. 2/6750 useless extension candidates. Maximal degree in co-relation 11275. Up to 2630 conditions per place. [2022-11-18 21:04:34,560 INFO L137 encePairwiseOnDemand]: 282/305 looper letters, 92 selfloop transitions, 34 changer transitions 0/326 dead transitions. [2022-11-18 21:04:34,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 326 transitions, 1063 flow [2022-11-18 21:04:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 21:04:34,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 21:04:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4514 transitions. [2022-11-18 21:04:34,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7047619047619048 [2022-11-18 21:04:34,573 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4514 transitions. [2022-11-18 21:04:34,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4514 transitions. [2022-11-18 21:04:34,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:34,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4514 transitions. [2022-11-18 21:04:34,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 214.95238095238096) internal successors, (4514), 21 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:34,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:34,604 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:34,604 INFO L175 Difference]: Start difference. First operand has 305 places, 301 transitions, 745 flow. Second operand 21 states and 4514 transitions. [2022-11-18 21:04:34,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 326 transitions, 1063 flow [2022-11-18 21:04:34,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 326 transitions, 1060 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:04:34,616 INFO L231 Difference]: Finished difference. Result has 329 places, 311 transitions, 883 flow [2022-11-18 21:04:34,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=883, PETRI_PLACES=329, PETRI_TRANSITIONS=311} [2022-11-18 21:04:34,618 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 44 predicate places. [2022-11-18 21:04:34,618 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 311 transitions, 883 flow [2022-11-18 21:04:34,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 210.9) internal successors, (4218), 20 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:34,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:34,620 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] [2022-11-18 21:04:34,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:04:34,621 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:04:34,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:34,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1289873808, now seen corresponding path program 1 times [2022-11-18 21:04:34,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:34,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879481186] [2022-11-18 21:04:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:36,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:36,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879481186] [2022-11-18 21:04:36,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879481186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:36,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:36,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 21:04:36,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702814268] [2022-11-18 21:04:36,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:36,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:04:36,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:36,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:04:36,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:04:36,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-18 21:04:36,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 311 transitions, 883 flow. Second operand has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:36,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:36,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-18 21:04:36,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:38,922 INFO L130 PetriNetUnfolder]: 1729/7723 cut-off events. [2022-11-18 21:04:38,922 INFO L131 PetriNetUnfolder]: For 751/755 co-relation queries the response was YES. [2022-11-18 21:04:38,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11901 conditions, 7723 events. 1729/7723 cut-off events. For 751/755 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 71732 event pairs, 848 based on Foata normal form. 6/6940 useless extension candidates. Maximal degree in co-relation 11879. Up to 2610 conditions per place. [2022-11-18 21:04:38,996 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 115 selfloop transitions, 43 changer transitions 0/352 dead transitions. [2022-11-18 21:04:38,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 352 transitions, 1343 flow [2022-11-18 21:04:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 21:04:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 21:04:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4363 transitions. [2022-11-18 21:04:39,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6811865729898516 [2022-11-18 21:04:39,012 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4363 transitions. [2022-11-18 21:04:39,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4363 transitions. [2022-11-18 21:04:39,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:39,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4363 transitions. [2022-11-18 21:04:39,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 207.76190476190476) internal successors, (4363), 21 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:39,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:39,048 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:39,048 INFO L175 Difference]: Start difference. First operand has 329 places, 311 transitions, 883 flow. Second operand 21 states and 4363 transitions. [2022-11-18 21:04:39,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 352 transitions, 1343 flow [2022-11-18 21:04:39,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 352 transitions, 1309 flow, removed 2 selfloop flow, removed 13 redundant places. [2022-11-18 21:04:39,063 INFO L231 Difference]: Finished difference. Result has 343 places, 320 transitions, 1033 flow [2022-11-18 21:04:39,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1033, PETRI_PLACES=343, PETRI_TRANSITIONS=320} [2022-11-18 21:04:39,066 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 58 predicate places. [2022-11-18 21:04:39,066 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 320 transitions, 1033 flow [2022-11-18 21:04:39,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:39,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:39,068 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] [2022-11-18 21:04:39,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 21:04:39,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:04:39,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:39,081 INFO L85 PathProgramCache]: Analyzing trace with hash -181584418, now seen corresponding path program 2 times [2022-11-18 21:04:39,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:39,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221759958] [2022-11-18 21:04:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:40,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:40,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221759958] [2022-11-18 21:04:40,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221759958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:40,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:40,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 21:04:40,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22342763] [2022-11-18 21:04:40,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:40,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:04:40,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:40,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:04:40,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:04:40,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-18 21:04:40,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 320 transitions, 1033 flow. Second operand has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:40,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:40,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-18 21:04:40,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:43,376 INFO L130 PetriNetUnfolder]: 1725/7713 cut-off events. [2022-11-18 21:04:43,376 INFO L131 PetriNetUnfolder]: For 932/936 co-relation queries the response was YES. [2022-11-18 21:04:43,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12012 conditions, 7713 events. 1725/7713 cut-off events. For 932/936 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 71649 event pairs, 858 based on Foata normal form. 6/6931 useless extension candidates. Maximal degree in co-relation 11983. Up to 2530 conditions per place. [2022-11-18 21:04:43,465 INFO L137 encePairwiseOnDemand]: 285/305 looper letters, 105 selfloop transitions, 37 changer transitions 0/336 dead transitions. [2022-11-18 21:04:43,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 336 transitions, 1369 flow [2022-11-18 21:04:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:04:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 21:04:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3531 transitions. [2022-11-18 21:04:43,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6810028929604629 [2022-11-18 21:04:43,472 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3531 transitions. [2022-11-18 21:04:43,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3531 transitions. [2022-11-18 21:04:43,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:43,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3531 transitions. [2022-11-18 21:04:43,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 207.7058823529412) internal successors, (3531), 17 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:43,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 305.0) internal successors, (5490), 18 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:43,495 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 305.0) internal successors, (5490), 18 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:43,495 INFO L175 Difference]: Start difference. First operand has 343 places, 320 transitions, 1033 flow. Second operand 17 states and 3531 transitions. [2022-11-18 21:04:43,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 336 transitions, 1369 flow [2022-11-18 21:04:43,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 336 transitions, 1339 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-11-18 21:04:43,508 INFO L231 Difference]: Finished difference. Result has 347 places, 318 transitions, 1061 flow [2022-11-18 21:04:43,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1061, PETRI_PLACES=347, PETRI_TRANSITIONS=318} [2022-11-18 21:04:43,511 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 62 predicate places. [2022-11-18 21:04:43,511 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 318 transitions, 1061 flow [2022-11-18 21:04:43,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:43,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:43,513 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] [2022-11-18 21:04:43,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:04:43,514 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:04:43,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:43,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1910066580, now seen corresponding path program 1 times [2022-11-18 21:04:43,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:43,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135997683] [2022-11-18 21:04:43,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:43,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:43,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:43,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135997683] [2022-11-18 21:04:43,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135997683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:43,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:43,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:04:43,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164705769] [2022-11-18 21:04:43,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:43,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:04:43,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:43,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:04:43,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:04:43,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-18 21:04:43,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 318 transitions, 1061 flow. Second operand has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:43,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:43,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-18 21:04:43,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:44,053 INFO L130 PetriNetUnfolder]: 114/1557 cut-off events. [2022-11-18 21:04:44,053 INFO L131 PetriNetUnfolder]: For 209/209 co-relation queries the response was YES. [2022-11-18 21:04:44,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2361 conditions, 1557 events. 114/1557 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 7144 event pairs, 31 based on Foata normal form. 0/1400 useless extension candidates. Maximal degree in co-relation 2332. Up to 192 conditions per place. [2022-11-18 21:04:44,067 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 27 selfloop transitions, 4 changer transitions 0/330 dead transitions. [2022-11-18 21:04:44,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 330 transitions, 1153 flow [2022-11-18 21:04:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:04:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:04:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1416 transitions. [2022-11-18 21:04:44,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9285245901639344 [2022-11-18 21:04:44,071 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1416 transitions. [2022-11-18 21:04:44,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1416 transitions. [2022-11-18 21:04:44,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:44,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1416 transitions. [2022-11-18 21:04:44,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.2) internal successors, (1416), 5 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:44,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:44,078 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:44,078 INFO L175 Difference]: Start difference. First operand has 347 places, 318 transitions, 1061 flow. Second operand 5 states and 1416 transitions. [2022-11-18 21:04:44,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 330 transitions, 1153 flow [2022-11-18 21:04:44,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 330 transitions, 1079 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-18 21:04:44,087 INFO L231 Difference]: Finished difference. Result has 338 places, 321 transitions, 1023 flow [2022-11-18 21:04:44,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1023, PETRI_PLACES=338, PETRI_TRANSITIONS=321} [2022-11-18 21:04:44,088 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 53 predicate places. [2022-11-18 21:04:44,089 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 321 transitions, 1023 flow [2022-11-18 21:04:44,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:44,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:44,090 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] [2022-11-18 21:04:44,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 21:04:44,090 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:04:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash 844561417, now seen corresponding path program 1 times [2022-11-18 21:04:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:44,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043307818] [2022-11-18 21:04:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:44,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:04:44,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:44,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043307818] [2022-11-18 21:04:44,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043307818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:44,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:44,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:04:44,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623409049] [2022-11-18 21:04:44,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:44,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:04:44,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:44,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:04:44,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:04:44,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-18 21:04:44,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 321 transitions, 1023 flow. Second operand has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:44,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:44,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-18 21:04:44,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:44,521 INFO L130 PetriNetUnfolder]: 110/1533 cut-off events. [2022-11-18 21:04:44,521 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2022-11-18 21:04:44,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 1533 events. 110/1533 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 6988 event pairs, 10 based on Foata normal form. 20/1446 useless extension candidates. Maximal degree in co-relation 2327. Up to 80 conditions per place. [2022-11-18 21:04:44,531 INFO L137 encePairwiseOnDemand]: 298/305 looper letters, 16 selfloop transitions, 8 changer transitions 0/323 dead transitions. [2022-11-18 21:04:44,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 323 transitions, 1077 flow [2022-11-18 21:04:44,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:04:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:04:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1403 transitions. [2022-11-18 21:04:44,535 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.92 [2022-11-18 21:04:44,535 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1403 transitions. [2022-11-18 21:04:44,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1403 transitions. [2022-11-18 21:04:44,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:44,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1403 transitions. [2022-11-18 21:04:44,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:44,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:44,541 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:44,541 INFO L175 Difference]: Start difference. First operand has 338 places, 321 transitions, 1023 flow. Second operand 5 states and 1403 transitions. [2022-11-18 21:04:44,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 323 transitions, 1077 flow [2022-11-18 21:04:44,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 323 transitions, 1075 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:04:44,550 INFO L231 Difference]: Finished difference. Result has 340 places, 320 transitions, 1037 flow [2022-11-18 21:04:44,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1037, PETRI_PLACES=340, PETRI_TRANSITIONS=320} [2022-11-18 21:04:44,551 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 55 predicate places. [2022-11-18 21:04:44,552 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 320 transitions, 1037 flow [2022-11-18 21:04:44,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:44,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:44,553 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] [2022-11-18 21:04:44,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 21:04:44,553 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:04:44,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:44,554 INFO L85 PathProgramCache]: Analyzing trace with hash 411600950, now seen corresponding path program 1 times [2022-11-18 21:04:44,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:44,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545157461] [2022-11-18 21:04:44,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:44,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:44,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:44,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545157461] [2022-11-18 21:04:44,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545157461] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:44,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371326288] [2022-11-18 21:04:44,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:44,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:44,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:44,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:44,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:04:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:04:44,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:44,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:44,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371326288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:44,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:04:44,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:04:44,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099423340] [2022-11-18 21:04:44,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:04:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:44,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:04:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:04:44,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-18 21:04:44,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 320 transitions, 1037 flow. Second operand has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:44,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:44,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-18 21:04:44,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:45,296 INFO L130 PetriNetUnfolder]: 106/1509 cut-off events. [2022-11-18 21:04:45,296 INFO L131 PetriNetUnfolder]: For 256/256 co-relation queries the response was YES. [2022-11-18 21:04:45,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 1509 events. 106/1509 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 6828 event pairs, 3 based on Foata normal form. 20/1422 useless extension candidates. Maximal degree in co-relation 2322. Up to 84 conditions per place. [2022-11-18 21:04:45,312 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 23 selfloop transitions, 6 changer transitions 0/328 dead transitions. [2022-11-18 21:04:45,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 328 transitions, 1117 flow [2022-11-18 21:04:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:04:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:04:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2022-11-18 21:04:45,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9194379391100702 [2022-11-18 21:04:45,316 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2022-11-18 21:04:45,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2022-11-18 21:04:45,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:45,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2022-11-18 21:04:45,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:45,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:45,323 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:45,324 INFO L175 Difference]: Start difference. First operand has 340 places, 320 transitions, 1037 flow. Second operand 7 states and 1963 transitions. [2022-11-18 21:04:45,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 328 transitions, 1117 flow [2022-11-18 21:04:45,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 328 transitions, 1105 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:04:45,333 INFO L231 Difference]: Finished difference. Result has 341 places, 318 transitions, 1029 flow [2022-11-18 21:04:45,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1029, PETRI_PLACES=341, PETRI_TRANSITIONS=318} [2022-11-18 21:04:45,335 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 56 predicate places. [2022-11-18 21:04:45,335 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 318 transitions, 1029 flow [2022-11-18 21:04:45,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:45,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:45,336 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] [2022-11-18 21:04:45,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:45,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb4b3b6-917d-4de8-bf26-1ee66f3c7aba/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 21:04:45,548 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:04:45,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:45,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1116102275, now seen corresponding path program 1 times [2022-11-18 21:04:45,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:45,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192276299] [2022-11-18 21:04:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:45,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:46,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:46,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192276299] [2022-11-18 21:04:46,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192276299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:46,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:46,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-18 21:04:46,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623862749] [2022-11-18 21:04:46,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:46,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 21:04:46,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:46,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 21:04:46,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:04:46,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 305 [2022-11-18 21:04:46,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 318 transitions, 1029 flow. Second operand has 17 states, 17 states have (on average 218.8235294117647) internal successors, (3720), 17 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:46,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:46,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 305 [2022-11-18 21:04:46,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:49,142 INFO L130 PetriNetUnfolder]: 1764/7867 cut-off events. [2022-11-18 21:04:49,142 INFO L131 PetriNetUnfolder]: For 1106/1110 co-relation queries the response was YES. [2022-11-18 21:04:49,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12469 conditions, 7867 events. 1764/7867 cut-off events. For 1106/1110 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 70689 event pairs, 1362 based on Foata normal form. 2/7158 useless extension candidates. Maximal degree in co-relation 12436. Up to 2758 conditions per place. [2022-11-18 21:04:49,224 INFO L137 encePairwiseOnDemand]: 289/305 looper letters, 85 selfloop transitions, 29 changer transitions 0/326 dead transitions. [2022-11-18 21:04:49,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 326 transitions, 1277 flow [2022-11-18 21:04:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:04:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 21:04:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3341 transitions. [2022-11-18 21:04:49,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7302732240437159 [2022-11-18 21:04:49,236 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3341 transitions. [2022-11-18 21:04:49,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3341 transitions. [2022-11-18 21:04:49,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:49,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3341 transitions. [2022-11-18 21:04:49,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 222.73333333333332) internal successors, (3341), 15 states have internal predecessors, (3341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:49,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 305.0) internal successors, (4880), 16 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:49,253 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 305.0) internal successors, (4880), 16 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:49,253 INFO L175 Difference]: Start difference. First operand has 341 places, 318 transitions, 1029 flow. Second operand 15 states and 3341 transitions. [2022-11-18 21:04:49,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 326 transitions, 1277 flow [2022-11-18 21:04:49,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 326 transitions, 1262 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 21:04:49,268 INFO L231 Difference]: Finished difference. Result has 353 places, 321 transitions, 1108 flow [2022-11-18 21:04:49,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1108, PETRI_PLACES=353, PETRI_TRANSITIONS=321} [2022-11-18 21:04:49,270 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 68 predicate places. [2022-11-18 21:04:49,270 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 321 transitions, 1108 flow [2022-11-18 21:04:49,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 218.8235294117647) internal successors, (3720), 17 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:49,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:49,272 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] [2022-11-18 21:04:49,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 21:04:49,272 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:04:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:49,273 INFO L85 PathProgramCache]: Analyzing trace with hash -978294637, now seen corresponding path program 1 times [2022-11-18 21:04:49,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:49,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807266770] [2022-11-18 21:04:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:49,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:55,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:55,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:55,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807266770] [2022-11-18 21:04:55,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807266770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:55,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:55,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 21:04:55,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712675977] [2022-11-18 21:04:55,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:55,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 21:04:55,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:55,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 21:04:55,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2022-11-18 21:04:55,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 305 [2022-11-18 21:04:55,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 321 transitions, 1108 flow. Second operand has 22 states, 22 states have (on average 208.5909090909091) internal successors, (4589), 22 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:55,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:55,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 305 [2022-11-18 21:04:55,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:01,162 INFO L130 PetriNetUnfolder]: 1616/7660 cut-off events. [2022-11-18 21:05:01,162 INFO L131 PetriNetUnfolder]: For 1099/1103 co-relation queries the response was YES. [2022-11-18 21:05:01,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12107 conditions, 7660 events. 1616/7660 cut-off events. For 1099/1103 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 70214 event pairs, 1306 based on Foata normal form. 8/6985 useless extension candidates. Maximal degree in co-relation 12072. Up to 2465 conditions per place. [2022-11-18 21:05:01,238 INFO L137 encePairwiseOnDemand]: 284/305 looper letters, 93 selfloop transitions, 46 changer transitions 0/343 dead transitions. [2022-11-18 21:05:01,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 343 transitions, 1455 flow [2022-11-18 21:05:01,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 21:05:01,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 21:05:01,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4863 transitions. [2022-11-18 21:05:01,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6932287954383464 [2022-11-18 21:05:01,247 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4863 transitions. [2022-11-18 21:05:01,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4863 transitions. [2022-11-18 21:05:01,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:01,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4863 transitions. [2022-11-18 21:05:01,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 211.43478260869566) internal successors, (4863), 23 states have internal predecessors, (4863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:01,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 305.0) internal successors, (7320), 24 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:01,269 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 305.0) internal successors, (7320), 24 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:01,269 INFO L175 Difference]: Start difference. First operand has 353 places, 321 transitions, 1108 flow. Second operand 23 states and 4863 transitions. [2022-11-18 21:05:01,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 343 transitions, 1455 flow [2022-11-18 21:05:01,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 343 transitions, 1428 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-18 21:05:01,283 INFO L231 Difference]: Finished difference. Result has 367 places, 323 transitions, 1213 flow [2022-11-18 21:05:01,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1213, PETRI_PLACES=367, PETRI_TRANSITIONS=323} [2022-11-18 21:05:01,285 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 82 predicate places. [2022-11-18 21:05:01,285 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 323 transitions, 1213 flow [2022-11-18 21:05:01,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 208.5909090909091) internal successors, (4589), 22 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:01,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:01,287 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] [2022-11-18 21:05:01,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 21:05:01,287 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:05:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:01,288 INFO L85 PathProgramCache]: Analyzing trace with hash 960879483, now seen corresponding path program 2 times [2022-11-18 21:05:01,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:01,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644033894] [2022-11-18 21:05:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:01,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:02,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:02,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644033894] [2022-11-18 21:05:02,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644033894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:02,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:02,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 21:05:02,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913917192] [2022-11-18 21:05:02,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:02,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:05:02,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:02,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:05:02,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:05:02,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 305 [2022-11-18 21:05:02,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 323 transitions, 1213 flow. Second operand has 19 states, 19 states have (on average 215.6315789473684) internal successors, (4097), 19 states have internal predecessors, (4097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:02,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:02,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 305 [2022-11-18 21:05:02,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:05,022 INFO L130 PetriNetUnfolder]: 1608/7621 cut-off events. [2022-11-18 21:05:05,022 INFO L131 PetriNetUnfolder]: For 1310/1314 co-relation queries the response was YES. [2022-11-18 21:05:05,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12144 conditions, 7621 events. 1608/7621 cut-off events. For 1310/1314 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 70106 event pairs, 783 based on Foata normal form. 3/6942 useless extension candidates. Maximal degree in co-relation 12107. Up to 2417 conditions per place. [2022-11-18 21:05:05,104 INFO L137 encePairwiseOnDemand]: 288/305 looper letters, 89 selfloop transitions, 30 changer transitions 0/330 dead transitions. [2022-11-18 21:05:05,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 330 transitions, 1469 flow [2022-11-18 21:05:05,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:05:05,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 21:05:05,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3073 transitions. [2022-11-18 21:05:05,110 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.719672131147541 [2022-11-18 21:05:05,111 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3073 transitions. [2022-11-18 21:05:05,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3073 transitions. [2022-11-18 21:05:05,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:05,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3073 transitions. [2022-11-18 21:05:05,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 219.5) internal successors, (3073), 14 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:05,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 305.0) internal successors, (4575), 15 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:05,123 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 305.0) internal successors, (4575), 15 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:05,123 INFO L175 Difference]: Start difference. First operand has 367 places, 323 transitions, 1213 flow. Second operand 14 states and 3073 transitions. [2022-11-18 21:05:05,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 330 transitions, 1469 flow [2022-11-18 21:05:05,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 330 transitions, 1389 flow, removed 6 selfloop flow, removed 23 redundant places. [2022-11-18 21:05:05,140 INFO L231 Difference]: Finished difference. Result has 355 places, 320 transitions, 1181 flow [2022-11-18 21:05:05,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1181, PETRI_PLACES=355, PETRI_TRANSITIONS=320} [2022-11-18 21:05:05,142 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 70 predicate places. [2022-11-18 21:05:05,146 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 320 transitions, 1181 flow [2022-11-18 21:05:05,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 215.6315789473684) internal successors, (4097), 19 states have internal predecessors, (4097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:05,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:05,148 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] [2022-11-18 21:05:05,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 21:05:05,148 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:05:05,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:05,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1464480890, now seen corresponding path program 1 times [2022-11-18 21:05:05,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:05,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145392189] [2022-11-18 21:05:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:05,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:08,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:08,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145392189] [2022-11-18 21:05:08,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145392189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:08,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:08,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-18 21:05:08,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37377738] [2022-11-18 21:05:08,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:08,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 21:05:08,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:08,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 21:05:08,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2022-11-18 21:05:08,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 305 [2022-11-18 21:05:08,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 320 transitions, 1181 flow. Second operand has 31 states, 31 states have (on average 195.0) internal successors, (6045), 31 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:08,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:08,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 305 [2022-11-18 21:05:08,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:14,043 INFO L130 PetriNetUnfolder]: 2445/10458 cut-off events. [2022-11-18 21:05:14,044 INFO L131 PetriNetUnfolder]: For 1766/1770 co-relation queries the response was YES. [2022-11-18 21:05:14,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17020 conditions, 10458 events. 2445/10458 cut-off events. For 1766/1770 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 102855 event pairs, 1950 based on Foata normal form. 2/9441 useless extension candidates. Maximal degree in co-relation 16990. Up to 3725 conditions per place. [2022-11-18 21:05:14,106 INFO L137 encePairwiseOnDemand]: 264/305 looper letters, 135 selfloop transitions, 70 changer transitions 0/388 dead transitions. [2022-11-18 21:05:14,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 388 transitions, 1876 flow [2022-11-18 21:05:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 21:05:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 21:05:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 7525 transitions. [2022-11-18 21:05:14,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6492666091458154 [2022-11-18 21:05:14,131 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 7525 transitions. [2022-11-18 21:05:14,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 7525 transitions. [2022-11-18 21:05:14,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:14,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 7525 transitions. [2022-11-18 21:05:14,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 198.02631578947367) internal successors, (7525), 38 states have internal predecessors, (7525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:14,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 305.0) internal successors, (11895), 39 states have internal predecessors, (11895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:14,157 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 305.0) internal successors, (11895), 39 states have internal predecessors, (11895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:14,157 INFO L175 Difference]: Start difference. First operand has 355 places, 320 transitions, 1181 flow. Second operand 38 states and 7525 transitions. [2022-11-18 21:05:14,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 388 transitions, 1876 flow [2022-11-18 21:05:14,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 388 transitions, 1816 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-11-18 21:05:14,173 INFO L231 Difference]: Finished difference. Result has 394 places, 354 transitions, 1588 flow [2022-11-18 21:05:14,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1588, PETRI_PLACES=394, PETRI_TRANSITIONS=354} [2022-11-18 21:05:14,174 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 109 predicate places. [2022-11-18 21:05:14,174 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 354 transitions, 1588 flow [2022-11-18 21:05:14,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 195.0) internal successors, (6045), 31 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:14,176 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:14,176 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] [2022-11-18 21:05:14,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 21:05:14,176 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:05:14,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:14,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1845733481, now seen corresponding path program 1 times [2022-11-18 21:05:14,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:14,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029430467] [2022-11-18 21:05:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:15,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:15,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029430467] [2022-11-18 21:05:15,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029430467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:15,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:15,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 21:05:15,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475497896] [2022-11-18 21:05:15,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:15,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 21:05:15,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:15,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 21:05:15,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-11-18 21:05:15,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 305 [2022-11-18 21:05:15,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 354 transitions, 1588 flow. Second operand has 23 states, 23 states have (on average 208.65217391304347) internal successors, (4799), 23 states have internal predecessors, (4799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:15,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:15,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 305 [2022-11-18 21:05:15,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:24,082 INFO L130 PetriNetUnfolder]: 6086/20453 cut-off events. [2022-11-18 21:05:24,082 INFO L131 PetriNetUnfolder]: For 3593/3593 co-relation queries the response was YES. [2022-11-18 21:05:24,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36542 conditions, 20453 events. 6086/20453 cut-off events. For 3593/3593 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 209165 event pairs, 1096 based on Foata normal form. 124/19116 useless extension candidates. Maximal degree in co-relation 36497. Up to 3022 conditions per place. [2022-11-18 21:05:24,273 INFO L137 encePairwiseOnDemand]: 274/305 looper letters, 405 selfloop transitions, 141 changer transitions 0/747 dead transitions. [2022-11-18 21:05:24,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 747 transitions, 3784 flow [2022-11-18 21:05:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 21:05:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 21:05:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8726 transitions. [2022-11-18 21:05:24,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7152459016393443 [2022-11-18 21:05:24,284 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8726 transitions. [2022-11-18 21:05:24,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8726 transitions. [2022-11-18 21:05:24,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:24,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8726 transitions. [2022-11-18 21:05:24,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 218.15) internal successors, (8726), 40 states have internal predecessors, (8726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:24,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:24,311 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:24,311 INFO L175 Difference]: Start difference. First operand has 394 places, 354 transitions, 1588 flow. Second operand 40 states and 8726 transitions. [2022-11-18 21:05:24,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 747 transitions, 3784 flow [2022-11-18 21:05:24,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 747 transitions, 3517 flow, removed 87 selfloop flow, removed 20 redundant places. [2022-11-18 21:05:24,475 INFO L231 Difference]: Finished difference. Result has 424 places, 455 transitions, 2187 flow [2022-11-18 21:05:24,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2187, PETRI_PLACES=424, PETRI_TRANSITIONS=455} [2022-11-18 21:05:24,476 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 139 predicate places. [2022-11-18 21:05:24,476 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 455 transitions, 2187 flow [2022-11-18 21:05:24,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 208.65217391304347) internal successors, (4799), 23 states have internal predecessors, (4799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:24,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:24,477 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] [2022-11-18 21:05:24,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 21:05:24,478 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:05:24,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:24,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1270584804, now seen corresponding path program 1 times [2022-11-18 21:05:24,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:24,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836785553] [2022-11-18 21:05:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:24,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:28,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:28,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836785553] [2022-11-18 21:05:28,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836785553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:28,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:28,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-18 21:05:28,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550111826] [2022-11-18 21:05:28,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:28,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 21:05:28,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:28,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 21:05:28,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 21:05:28,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 305 [2022-11-18 21:05:28,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 455 transitions, 2187 flow. Second operand has 34 states, 34 states have (on average 186.05882352941177) internal successors, (6326), 34 states have internal predecessors, (6326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:28,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:28,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 305 [2022-11-18 21:05:28,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:38,621 INFO L130 PetriNetUnfolder]: 6930/22304 cut-off events. [2022-11-18 21:05:38,621 INFO L131 PetriNetUnfolder]: For 8605/8805 co-relation queries the response was YES. [2022-11-18 21:05:38,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44125 conditions, 22304 events. 6930/22304 cut-off events. For 8605/8805 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 233727 event pairs, 3189 based on Foata normal form. 24/20353 useless extension candidates. Maximal degree in co-relation 44071. Up to 10493 conditions per place. [2022-11-18 21:05:39,007 INFO L137 encePairwiseOnDemand]: 265/305 looper letters, 257 selfloop transitions, 96 changer transitions 0/541 dead transitions. [2022-11-18 21:05:39,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 541 transitions, 3212 flow [2022-11-18 21:05:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 21:05:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 21:05:39,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 7199 transitions. [2022-11-18 21:05:39,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6211389128559103 [2022-11-18 21:05:39,016 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 7199 transitions. [2022-11-18 21:05:39,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 7199 transitions. [2022-11-18 21:05:39,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:39,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 7199 transitions. [2022-11-18 21:05:39,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 189.44736842105263) internal successors, (7199), 38 states have internal predecessors, (7199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:39,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 305.0) internal successors, (11895), 39 states have internal predecessors, (11895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:39,040 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 305.0) internal successors, (11895), 39 states have internal predecessors, (11895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:39,040 INFO L175 Difference]: Start difference. First operand has 424 places, 455 transitions, 2187 flow. Second operand 38 states and 7199 transitions. [2022-11-18 21:05:39,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 541 transitions, 3212 flow [2022-11-18 21:05:39,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 541 transitions, 3122 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-11-18 21:05:39,127 INFO L231 Difference]: Finished difference. Result has 465 places, 473 transitions, 2517 flow [2022-11-18 21:05:39,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=2517, PETRI_PLACES=465, PETRI_TRANSITIONS=473} [2022-11-18 21:05:39,129 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 180 predicate places. [2022-11-18 21:05:39,129 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 473 transitions, 2517 flow [2022-11-18 21:05:39,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 186.05882352941177) internal successors, (6326), 34 states have internal predecessors, (6326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:39,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:39,130 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] [2022-11-18 21:05:39,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 21:05:39,131 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:05:39,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:39,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1994402645, now seen corresponding path program 1 times [2022-11-18 21:05:39,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:39,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71725567] [2022-11-18 21:05:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:39,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:42,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:42,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71725567] [2022-11-18 21:05:42,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71725567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:42,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:42,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-18 21:05:42,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901810573] [2022-11-18 21:05:42,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:42,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 21:05:42,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:42,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 21:05:42,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2022-11-18 21:05:42,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 305 [2022-11-18 21:05:42,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 473 transitions, 2517 flow. Second operand has 32 states, 32 states have (on average 186.21875) internal successors, (5959), 32 states have internal predecessors, (5959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:42,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:42,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 305 [2022-11-18 21:05:42,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:54,643 INFO L130 PetriNetUnfolder]: 7013/24144 cut-off events. [2022-11-18 21:05:54,643 INFO L131 PetriNetUnfolder]: For 11734/12064 co-relation queries the response was YES. [2022-11-18 21:05:54,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47668 conditions, 24144 events. 7013/24144 cut-off events. For 11734/12064 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 256546 event pairs, 1780 based on Foata normal form. 82/22010 useless extension candidates. Maximal degree in co-relation 47603. Up to 5704 conditions per place. [2022-11-18 21:05:54,879 INFO L137 encePairwiseOnDemand]: 259/305 looper letters, 272 selfloop transitions, 133 changer transitions 0/593 dead transitions. [2022-11-18 21:05:54,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 593 transitions, 3726 flow [2022-11-18 21:05:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 21:05:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 21:05:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 7608 transitions. [2022-11-18 21:05:54,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6236065573770492 [2022-11-18 21:05:54,888 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 7608 transitions. [2022-11-18 21:05:54,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 7608 transitions. [2022-11-18 21:05:54,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:54,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 7608 transitions. [2022-11-18 21:05:54,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 190.2) internal successors, (7608), 40 states have internal predecessors, (7608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:54,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:54,919 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:54,920 INFO L175 Difference]: Start difference. First operand has 465 places, 473 transitions, 2517 flow. Second operand 40 states and 7608 transitions. [2022-11-18 21:05:54,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 593 transitions, 3726 flow [2022-11-18 21:05:55,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 593 transitions, 3577 flow, removed 14 selfloop flow, removed 26 redundant places. [2022-11-18 21:05:55,042 INFO L231 Difference]: Finished difference. Result has 484 places, 490 transitions, 2890 flow [2022-11-18 21:05:55,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2890, PETRI_PLACES=484, PETRI_TRANSITIONS=490} [2022-11-18 21:05:55,044 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 199 predicate places. [2022-11-18 21:05:55,044 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 490 transitions, 2890 flow [2022-11-18 21:05:55,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 186.21875) internal successors, (5959), 32 states have internal predecessors, (5959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:55,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:55,046 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] [2022-11-18 21:05:55,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 21:05:55,046 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:05:55,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:55,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1986248639, now seen corresponding path program 2 times [2022-11-18 21:05:55,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:55,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261166528] [2022-11-18 21:05:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:55,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:57,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:57,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261166528] [2022-11-18 21:05:57,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261166528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:57,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:57,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 21:05:57,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774634898] [2022-11-18 21:05:57,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:57,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 21:05:57,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 21:05:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2022-11-18 21:05:57,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 305 [2022-11-18 21:05:57,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 490 transitions, 2890 flow. Second operand has 25 states, 25 states have (on average 204.56) internal successors, (5114), 25 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:57,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:57,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 305 [2022-11-18 21:05:57,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:08,148 INFO L130 PetriNetUnfolder]: 7327/24565 cut-off events. [2022-11-18 21:06:08,149 INFO L131 PetriNetUnfolder]: For 17495/17723 co-relation queries the response was YES. [2022-11-18 21:06:08,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51479 conditions, 24565 events. 7327/24565 cut-off events. For 17495/17723 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 261367 event pairs, 1325 based on Foata normal form. 181/22813 useless extension candidates. Maximal degree in co-relation 51408. Up to 2637 conditions per place. [2022-11-18 21:06:08,423 INFO L137 encePairwiseOnDemand]: 276/305 looper letters, 425 selfloop transitions, 197 changer transitions 0/821 dead transitions. [2022-11-18 21:06:08,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 821 transitions, 5273 flow [2022-11-18 21:06:08,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 21:06:08,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 21:06:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 8319 transitions. [2022-11-18 21:06:08,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6993694829760404 [2022-11-18 21:06:08,433 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 8319 transitions. [2022-11-18 21:06:08,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 8319 transitions. [2022-11-18 21:06:08,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:08,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 8319 transitions. [2022-11-18 21:06:08,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 213.30769230769232) internal successors, (8319), 39 states have internal predecessors, (8319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:08,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 305.0) internal successors, (12200), 40 states have internal predecessors, (12200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:08,459 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 305.0) internal successors, (12200), 40 states have internal predecessors, (12200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:08,459 INFO L175 Difference]: Start difference. First operand has 484 places, 490 transitions, 2890 flow. Second operand 39 states and 8319 transitions. [2022-11-18 21:06:08,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 821 transitions, 5273 flow [2022-11-18 21:06:08,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 821 transitions, 5099 flow, removed 8 selfloop flow, removed 33 redundant places. [2022-11-18 21:06:08,641 INFO L231 Difference]: Finished difference. Result has 498 places, 559 transitions, 3789 flow [2022-11-18 21:06:08,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2711, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3789, PETRI_PLACES=498, PETRI_TRANSITIONS=559} [2022-11-18 21:06:08,643 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 213 predicate places. [2022-11-18 21:06:08,643 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 559 transitions, 3789 flow [2022-11-18 21:06:08,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 204.56) internal successors, (5114), 25 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:08,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:08,644 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] [2022-11-18 21:06:08,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 21:06:08,644 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:06:08,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash -714531473, now seen corresponding path program 1 times [2022-11-18 21:06:08,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:08,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619841326] [2022-11-18 21:06:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:08,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:11,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:11,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619841326] [2022-11-18 21:06:11,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619841326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:11,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:11,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 21:06:11,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327589160] [2022-11-18 21:06:11,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:11,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 21:06:11,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:11,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 21:06:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-11-18 21:06:11,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 305 [2022-11-18 21:06:11,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 559 transitions, 3789 flow. Second operand has 27 states, 27 states have (on average 209.22222222222223) internal successors, (5649), 27 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:11,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:11,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 305 [2022-11-18 21:06:11,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:22,333 INFO L130 PetriNetUnfolder]: 7780/28295 cut-off events. [2022-11-18 21:06:22,334 INFO L131 PetriNetUnfolder]: For 29047/29510 co-relation queries the response was YES. [2022-11-18 21:06:22,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61071 conditions, 28295 events. 7780/28295 cut-off events. For 29047/29510 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 316423 event pairs, 4596 based on Foata normal form. 68/26010 useless extension candidates. Maximal degree in co-relation 60992. Up to 9828 conditions per place. [2022-11-18 21:06:22,714 INFO L137 encePairwiseOnDemand]: 269/305 looper letters, 347 selfloop transitions, 120 changer transitions 0/744 dead transitions. [2022-11-18 21:06:22,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 744 transitions, 5697 flow [2022-11-18 21:06:22,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 21:06:22,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 21:06:22,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7707 transitions. [2022-11-18 21:06:22,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7019125683060109 [2022-11-18 21:06:22,722 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7707 transitions. [2022-11-18 21:06:22,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7707 transitions. [2022-11-18 21:06:22,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:22,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7707 transitions. [2022-11-18 21:06:22,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 214.08333333333334) internal successors, (7707), 36 states have internal predecessors, (7707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:22,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 305.0) internal successors, (11285), 37 states have internal predecessors, (11285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:22,744 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 305.0) internal successors, (11285), 37 states have internal predecessors, (11285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:22,744 INFO L175 Difference]: Start difference. First operand has 498 places, 559 transitions, 3789 flow. Second operand 36 states and 7707 transitions. [2022-11-18 21:06:22,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 744 transitions, 5697 flow [2022-11-18 21:06:23,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 744 transitions, 5603 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-11-18 21:06:23,052 INFO L231 Difference]: Finished difference. Result has 537 places, 616 transitions, 4680 flow [2022-11-18 21:06:23,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=3701, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4680, PETRI_PLACES=537, PETRI_TRANSITIONS=616} [2022-11-18 21:06:23,053 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 252 predicate places. [2022-11-18 21:06:23,053 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 616 transitions, 4680 flow [2022-11-18 21:06:23,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 209.22222222222223) internal successors, (5649), 27 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:23,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:23,055 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] [2022-11-18 21:06:23,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 21:06:23,055 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 21:06:23,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:23,056 INFO L85 PathProgramCache]: Analyzing trace with hash -675638350, now seen corresponding path program 1 times [2022-11-18 21:06:23,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:23,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705080796] [2022-11-18 21:06:23,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:23,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:24,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:24,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705080796] [2022-11-18 21:06:24,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705080796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:24,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:24,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 21:06:24,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521375427] [2022-11-18 21:06:24,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:24,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 21:06:24,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:24,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 21:06:24,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-18 21:06:24,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 305 [2022-11-18 21:06:24,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 616 transitions, 4680 flow. Second operand has 22 states, 22 states have (on average 208.9090909090909) internal successors, (4596), 22 states have internal predecessors, (4596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:24,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:24,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 305 [2022-11-18 21:06:24,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand