./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79f59481c49375d27b8409383d6d600e90e5ee29536655deda4d0ae0ca7faefc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:30:17,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:30:17,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:30:17,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:30:17,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:30:17,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:30:17,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:30:17,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:30:17,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:30:17,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:30:17,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:30:17,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:30:17,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:30:17,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:30:17,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:30:17,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:30:17,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:30:17,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:30:17,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:30:17,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:30:17,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:30:17,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:30:17,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:30:17,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:30:17,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:30:17,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:30:17,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:30:17,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:30:17,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:30:17,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:30:17,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:30:17,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:30:17,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:30:17,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:30:17,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:30:17,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:30:17,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:30:17,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:30:17,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:30:17,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:30:17,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:30:17,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:30:17,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:30:17,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:30:17,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:30:17,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:30:17,513 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:30:17,513 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:30:17,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:30:17,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:30:17,514 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:30:17,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:30:17,514 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:30:17,519 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:30:17,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:30:17,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:30:17,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:30:17,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:30:17,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:30:17,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:30:17,520 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:30:17,520 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:30:17,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:30:17,521 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:30:17,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:30:17,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:30:17,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:30:17,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:30:17,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:30:17,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:30:17,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:30:17,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:30:17,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:30:17,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:30:17,525 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:30:17,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:30:17,526 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:30:17,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:30:17,527 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79f59481c49375d27b8409383d6d600e90e5ee29536655deda4d0ae0ca7faefc [2022-11-25 17:30:17,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:30:17,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:30:17,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:30:17,950 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:30:17,951 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:30:17,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2022-11-25 17:30:21,390 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:30:21,780 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:30:21,781 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2022-11-25 17:30:21,796 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/data/e3bb855ac/0d1bb21b1aa04312bf3476c36444f579/FLAG1387d1d88 [2022-11-25 17:30:21,814 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/data/e3bb855ac/0d1bb21b1aa04312bf3476c36444f579 [2022-11-25 17:30:21,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:30:21,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:30:21,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:30:21,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:30:21,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:30:21,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:30:21" (1/1) ... [2022-11-25 17:30:21,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1306cb6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:21, skipping insertion in model container [2022-11-25 17:30:21,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:30:21" (1/1) ... [2022-11-25 17:30:21,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:30:21,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:30:22,345 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i[31164,31177] [2022-11-25 17:30:22,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:30:22,388 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:30:22,471 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i[31164,31177] [2022-11-25 17:30:22,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:30:22,526 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:30:22,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22 WrapperNode [2022-11-25 17:30:22,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:30:22,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:30:22,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:30:22,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:30:22,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22" (1/1) ... [2022-11-25 17:30:22,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22" (1/1) ... [2022-11-25 17:30:22,628 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 197 [2022-11-25 17:30:22,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:30:22,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:30:22,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:30:22,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:30:22,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22" (1/1) ... [2022-11-25 17:30:22,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22" (1/1) ... [2022-11-25 17:30:22,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22" (1/1) ... [2022-11-25 17:30:22,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22" (1/1) ... [2022-11-25 17:30:22,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22" (1/1) ... [2022-11-25 17:30:22,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22" (1/1) ... [2022-11-25 17:30:22,694 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22" (1/1) ... [2022-11-25 17:30:22,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22" (1/1) ... [2022-11-25 17:30:22,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:30:22,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:30:22,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:30:22,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:30:22,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22" (1/1) ... [2022-11-25 17:30:22,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:30:22,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:30:22,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:30:22,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b78e4f-55d9-45d2-9d96-6598c0d3394e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:30:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:30:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-25 17:30:22,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-25 17:30:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:30:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:30:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:30:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:30:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:30:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:30:22,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:30:22,828 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:30:23,099 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:30:23,117 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:30:23,703 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:30:24,031 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:30:24,031 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 17:30:24,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:30:24 BoogieIcfgContainer [2022-11-25 17:30:24,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:30:24,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:30:24,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:30:24,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:30:24,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:30:21" (1/3) ... [2022-11-25 17:30:24,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb86d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:30:24, skipping insertion in model container [2022-11-25 17:30:24,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:22" (2/3) ... [2022-11-25 17:30:24,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb86d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:30:24, skipping insertion in model container [2022-11-25 17:30:24,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:30:24" (3/3) ... [2022-11-25 17:30:24,048 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-2.i [2022-11-25 17:30:24,060 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:30:24,073 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:30:24,073 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 17:30:24,074 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:30:24,188 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:30:24,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 143 transitions, 291 flow [2022-11-25 17:30:24,311 INFO L130 PetriNetUnfolder]: 11/154 cut-off events. [2022-11-25 17:30:24,311 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:30:24,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 154 events. 11/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 116. Up to 4 conditions per place. [2022-11-25 17:30:24,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 143 transitions, 291 flow [2022-11-25 17:30:24,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 143 transitions, 291 flow [2022-11-25 17:30:24,337 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:30:24,370 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 143 transitions, 291 flow [2022-11-25 17:30:24,375 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 143 transitions, 291 flow [2022-11-25 17:30:24,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 143 transitions, 291 flow [2022-11-25 17:30:24,439 INFO L130 PetriNetUnfolder]: 11/154 cut-off events. [2022-11-25 17:30:24,440 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:30:24,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 154 events. 11/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 116. Up to 4 conditions per place. [2022-11-25 17:30:24,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 2884 [2022-11-25 17:30:35,353 INFO L134 LiptonReduction]: Checked pairs total: 3584 [2022-11-25 17:30:35,353 INFO L136 LiptonReduction]: Total number of compositions: 160 [2022-11-25 17:30:35,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:30:35,403 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;@44027e44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:30:35,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-25 17:30:35,415 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2022-11-25 17:30:35,416 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:30:35,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:30:35,418 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 17:30:35,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:30:35,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:35,425 INFO L85 PathProgramCache]: Analyzing trace with hash 716780554, now seen corresponding path program 1 times [2022-11-25 17:30:35,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:30:35,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29964237] [2022-11-25 17:30:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:35,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:30:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:30:35,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:30:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:30:35,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:30:35,719 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:30:35,721 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-25 17:30:35,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-25 17:30:35,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-25 17:30:35,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-25 17:30:35,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-25 17:30:35,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-25 17:30:35,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-25 17:30:35,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-25 17:30:35,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-25 17:30:35,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-25 17:30:35,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-25 17:30:35,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-25 17:30:35,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-25 17:30:35,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-25 17:30:35,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-25 17:30:35,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-25 17:30:35,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-25 17:30:35,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-25 17:30:35,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-25 17:30:35,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-25 17:30:35,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-25 17:30:35,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:30:35,735 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:30:35,742 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:30:35,742 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 17:30:35,845 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:30:35,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 247 transitions, 506 flow [2022-11-25 17:30:35,998 INFO L130 PetriNetUnfolder]: 21/271 cut-off events. [2022-11-25 17:30:35,998 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:30:36,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 271 events. 21/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 588 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 219. Up to 6 conditions per place. [2022-11-25 17:30:36,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 247 transitions, 506 flow [2022-11-25 17:30:36,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 247 transitions, 506 flow [2022-11-25 17:30:36,013 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:30:36,013 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 247 transitions, 506 flow [2022-11-25 17:30:36,014 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 247 transitions, 506 flow [2022-11-25 17:30:36,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 247 transitions, 506 flow [2022-11-25 17:30:36,083 INFO L130 PetriNetUnfolder]: 21/271 cut-off events. [2022-11-25 17:30:36,084 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:30:36,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 271 events. 21/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 588 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 219. Up to 6 conditions per place. [2022-11-25 17:30:36,107 INFO L119 LiptonReduction]: Number of co-enabled transitions 27192 [2022-11-25 17:30:46,227 INFO L134 LiptonReduction]: Checked pairs total: 52526 [2022-11-25 17:30:46,227 INFO L136 LiptonReduction]: Total number of compositions: 221 [2022-11-25 17:30:46,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:30:46,232 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;@44027e44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:30:46,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-25 17:30:46,240 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2022-11-25 17:30:46,240 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:30:46,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:30:46,241 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:30:46,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 17:30:46,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:46,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1649361988, now seen corresponding path program 1 times [2022-11-25 17:30:46,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:30:46,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539528620] [2022-11-25 17:30:46,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:46,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:30:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:30:46,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:30:46,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539528620] [2022-11-25 17:30:46,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539528620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:46,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:46,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:30:46,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862099840] [2022-11-25 17:30:46,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:46,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:30:46,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:30:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:30:46,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:30:46,563 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 468 [2022-11-25 17:30:46,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:46,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:30:46,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 468 [2022-11-25 17:30:46,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:30:48,006 INFO L130 PetriNetUnfolder]: 3799/6211 cut-off events. [2022-11-25 17:30:48,007 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-11-25 17:30:48,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12320 conditions, 6211 events. 3799/6211 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 41222 event pairs, 1465 based on Foata normal form. 74/4495 useless extension candidates. Maximal degree in co-relation 10196. Up to 4858 conditions per place. [2022-11-25 17:30:48,071 INFO L137 encePairwiseOnDemand]: 451/468 looper letters, 171 selfloop transitions, 9 changer transitions 0/190 dead transitions. [2022-11-25 17:30:48,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 190 transitions, 762 flow [2022-11-25 17:30:48,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:30:48,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:30:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1264 transitions. [2022-11-25 17:30:48,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5401709401709401 [2022-11-25 17:30:48,102 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1264 transitions. [2022-11-25 17:30:48,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1264 transitions. [2022-11-25 17:30:48,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:30:48,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1264 transitions. [2022-11-25 17:30:48,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 252.8) internal successors, (1264), 5 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:48,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 468.0) internal successors, (2808), 6 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:48,139 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 468.0) internal successors, (2808), 6 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:48,141 INFO L175 Difference]: Start difference. First operand has 81 places, 90 transitions, 192 flow. Second operand 5 states and 1264 transitions. [2022-11-25 17:30:48,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 190 transitions, 762 flow [2022-11-25 17:30:48,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 190 transitions, 760 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 17:30:48,155 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 248 flow [2022-11-25 17:30:48,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=468, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2022-11-25 17:30:48,163 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 5 predicate places. [2022-11-25 17:30:48,163 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 248 flow [2022-11-25 17:30:48,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:48,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:30:48,165 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 17:30:48,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:30:48,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 17:30:48,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:48,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1572617684, now seen corresponding path program 1 times [2022-11-25 17:30:48,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:30:48,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432524406] [2022-11-25 17:30:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:48,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:30:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:30:48,236 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:30:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:30:48,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:30:48,279 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:30:48,280 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-25 17:30:48,280 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2022-11-25 17:30:48,281 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2022-11-25 17:30:48,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2022-11-25 17:30:48,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2022-11-25 17:30:48,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2022-11-25 17:30:48,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2022-11-25 17:30:48,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2022-11-25 17:30:48,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2022-11-25 17:30:48,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2022-11-25 17:30:48,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2022-11-25 17:30:48,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2022-11-25 17:30:48,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2022-11-25 17:30:48,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2022-11-25 17:30:48,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2022-11-25 17:30:48,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2022-11-25 17:30:48,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2022-11-25 17:30:48,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2022-11-25 17:30:48,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2022-11-25 17:30:48,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2022-11-25 17:30:48,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2022-11-25 17:30:48,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2022-11-25 17:30:48,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2022-11-25 17:30:48,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2022-11-25 17:30:48,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2022-11-25 17:30:48,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2022-11-25 17:30:48,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2022-11-25 17:30:48,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2022-11-25 17:30:48,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2022-11-25 17:30:48,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2022-11-25 17:30:48,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2022-11-25 17:30:48,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:30:48,301 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 17:30:48,302 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:30:48,302 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 17:30:48,376 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:30:48,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 351 transitions, 723 flow [2022-11-25 17:30:48,485 INFO L130 PetriNetUnfolder]: 31/388 cut-off events. [2022-11-25 17:30:48,486 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:30:48,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 388 events. 31/388 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1180 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 322. Up to 8 conditions per place. [2022-11-25 17:30:48,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 351 transitions, 723 flow [2022-11-25 17:30:48,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 330 places, 351 transitions, 723 flow [2022-11-25 17:30:48,502 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:30:48,503 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 330 places, 351 transitions, 723 flow [2022-11-25 17:30:48,503 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 330 places, 351 transitions, 723 flow [2022-11-25 17:30:48,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 351 transitions, 723 flow [2022-11-25 17:30:48,673 INFO L130 PetriNetUnfolder]: 31/388 cut-off events. [2022-11-25 17:30:48,673 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:30:48,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 388 events. 31/388 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1180 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 322. Up to 8 conditions per place. [2022-11-25 17:30:48,710 INFO L119 LiptonReduction]: Number of co-enabled transitions 72924 [2022-11-25 17:31:02,226 INFO L134 LiptonReduction]: Checked pairs total: 145407 [2022-11-25 17:31:02,227 INFO L136 LiptonReduction]: Total number of compositions: 317 [2022-11-25 17:31:02,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:31:02,230 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;@44027e44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:31:02,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-25 17:31:02,240 INFO L130 PetriNetUnfolder]: 3/33 cut-off events. [2022-11-25 17:31:02,240 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:31:02,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:31:02,240 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:02,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-25 17:31:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1243954474, now seen corresponding path program 1 times [2022-11-25 17:31:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:02,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116461332] [2022-11-25 17:31:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:02,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:02,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:02,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116461332] [2022-11-25 17:31:02,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116461332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:02,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:02,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:31:02,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801012272] [2022-11-25 17:31:02,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:02,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:31:02,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:02,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:31:02,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:31:02,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 668 [2022-11-25 17:31:02,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 131 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:02,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:31:02,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 668 [2022-11-25 17:31:02,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:31:37,801 INFO L130 PetriNetUnfolder]: 218254/304594 cut-off events. [2022-11-25 17:31:37,802 INFO L131 PetriNetUnfolder]: For 7657/7657 co-relation queries the response was YES. [2022-11-25 17:31:38,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605010 conditions, 304594 events. 218254/304594 cut-off events. For 7657/7657 co-relation queries the response was YES. Maximal size of possible extension queue 9237. Compared 2457282 event pairs, 66694 based on Foata normal form. 2708/207685 useless extension candidates. Maximal degree in co-relation 350299. Up to 222912 conditions per place. [2022-11-25 17:31:40,353 INFO L137 encePairwiseOnDemand]: 649/668 looper letters, 342 selfloop transitions, 15 changer transitions 0/372 dead transitions. [2022-11-25 17:31:40,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 372 transitions, 1510 flow [2022-11-25 17:31:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:31:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:31:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1902 transitions. [2022-11-25 17:31:40,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5694610778443113 [2022-11-25 17:31:40,372 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1902 transitions. [2022-11-25 17:31:40,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1902 transitions. [2022-11-25 17:31:40,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:31:40,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1902 transitions. [2022-11-25 17:31:40,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 380.4) internal successors, (1902), 5 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:40,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 668.0) internal successors, (4008), 6 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:40,403 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 668.0) internal successors, (4008), 6 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:40,404 INFO L175 Difference]: Start difference. First operand has 117 places, 131 transitions, 283 flow. Second operand 5 states and 1902 transitions. [2022-11-25 17:31:40,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 372 transitions, 1510 flow [2022-11-25 17:31:40,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 372 transitions, 1498 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-25 17:31:40,424 INFO L231 Difference]: Finished difference. Result has 124 places, 137 transitions, 385 flow [2022-11-25 17:31:40,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=124, PETRI_TRANSITIONS=137} [2022-11-25 17:31:40,427 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 7 predicate places. [2022-11-25 17:31:40,427 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 137 transitions, 385 flow [2022-11-25 17:31:40,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:40,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:31:40,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:40,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:31:40,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-25 17:31:40,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:40,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1331611736, now seen corresponding path program 1 times [2022-11-25 17:31:40,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:40,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90281390] [2022-11-25 17:31:40,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:40,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:40,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:40,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90281390] [2022-11-25 17:31:40,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90281390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:40,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:40,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:31:40,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4508148] [2022-11-25 17:31:40,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:40,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:31:40,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:40,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:31:40,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:31:40,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 668 [2022-11-25 17:31:40,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 137 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:40,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:31:40,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 668 [2022-11-25 17:31:40,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand