./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8 --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 71de1c8da7c81d1cb6f2035741a17645b8c79e199c0fda7e542c1cb232593d6b --- 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-2329fc7 [2022-12-13 18:04:55,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:04:55,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:04:55,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:04:55,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:04:55,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:04:55,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:04:55,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:04:55,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:04:55,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:04:55,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:04:55,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:04:55,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:04:55,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:04:55,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:04:55,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:04:55,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:04:55,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:04:55,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:04:55,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:04:55,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:04:55,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:04:55,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:04:55,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:04:55,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:04:55,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:04:55,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:04:55,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:04:55,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:04:55,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:04:55,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:04:55,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:04:55,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:04:55,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:04:55,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:04:55,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:04:55,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:04:55,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:04:55,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:04:55,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:04:55,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:04:55,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 18:04:55,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:04:55,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:04:55,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:04:55,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:04:55,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:04:55,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:04:55,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:04:55,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:04:55,549 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:04:55,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:04:55,549 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:04:55,549 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:04:55,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:04:55,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:04:55,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:04:55,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:04:55,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:04:55,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:04:55,551 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 18:04:55,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:04:55,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:04:55,551 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:04:55,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:04:55,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:04:55,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:04:55,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:04:55,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:04:55,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:04:55,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:04:55,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:04:55,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:04:55,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:04:55,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:04:55,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:04:55,554 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:04:55,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:04:55,554 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:04:55,554 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_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71de1c8da7c81d1cb6f2035741a17645b8c79e199c0fda7e542c1cb232593d6b [2022-12-13 18:04:55,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:04:55,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:04:55,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:04:55,753 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:04:55,754 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:04:55,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/25_stack_longer-1.i [2022-12-13 18:04:58,263 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:04:58,472 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:04:58,473 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i [2022-12-13 18:04:58,482 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/data/912fc0c03/83f219b79bd24e659633428310f95308/FLAG87e2815a5 [2022-12-13 18:04:58,825 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/data/912fc0c03/83f219b79bd24e659633428310f95308 [2022-12-13 18:04:58,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:04:58,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:04:58,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:04:58,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:04:58,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:04:58,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:04:58" (1/1) ... [2022-12-13 18:04:58,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426d3acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:58, skipping insertion in model container [2022-12-13 18:04:58,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:04:58" (1/1) ... [2022-12-13 18:04:58,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:04:58,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:04:59,051 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_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i[31042,31055] [2022-12-13 18:04:59,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:04:59,065 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:04:59,094 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_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i[31042,31055] [2022-12-13 18:04:59,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:04:59,117 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:04:59,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59 WrapperNode [2022-12-13 18:04:59,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:04:59,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:04:59,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:04:59,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:04:59,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59" (1/1) ... [2022-12-13 18:04:59,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59" (1/1) ... [2022-12-13 18:04:59,150 INFO L138 Inliner]: procedures = 177, calls = 34, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 182 [2022-12-13 18:04:59,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:04:59,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:04:59,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:04:59,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:04:59,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59" (1/1) ... [2022-12-13 18:04:59,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59" (1/1) ... [2022-12-13 18:04:59,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59" (1/1) ... [2022-12-13 18:04:59,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59" (1/1) ... [2022-12-13 18:04:59,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59" (1/1) ... [2022-12-13 18:04:59,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59" (1/1) ... [2022-12-13 18:04:59,168 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59" (1/1) ... [2022-12-13 18:04:59,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59" (1/1) ... [2022-12-13 18:04:59,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:04:59,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:04:59,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:04:59,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:04:59,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59" (1/1) ... [2022-12-13 18:04:59,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:04:59,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:59,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:04:59,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446e45fc-b38f-4ee9-8a51-ccf15ea4786e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:04:59,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:04:59,223 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 18:04:59,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 18:04:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:04:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:04:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:04:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:04:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:04:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:04:59,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:04:59,226 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:04:59,320 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:04:59,322 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:04:59,594 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:04:59,739 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:04:59,739 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 18:04:59,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:04:59 BoogieIcfgContainer [2022-12-13 18:04:59,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:04:59,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:04:59,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:04:59,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:04:59,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:04:58" (1/3) ... [2022-12-13 18:04:59,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8df1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:04:59, skipping insertion in model container [2022-12-13 18:04:59,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:59" (2/3) ... [2022-12-13 18:04:59,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8df1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:04:59, skipping insertion in model container [2022-12-13 18:04:59,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:04:59" (3/3) ... [2022-12-13 18:04:59,750 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-1.i [2022-12-13 18:04:59,757 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:04:59,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:04:59,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 18:04:59,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:04:59,825 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:04:59,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 125 transitions, 255 flow [2022-12-13 18:04:59,919 INFO L130 PetriNetUnfolder]: 8/136 cut-off events. [2022-12-13 18:04:59,919 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:04:59,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 8/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2022-12-13 18:04:59,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 125 transitions, 255 flow [2022-12-13 18:04:59,931 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 125 transitions, 255 flow [2022-12-13 18:04:59,934 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:04:59,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 125 transitions, 255 flow [2022-12-13 18:04:59,946 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 125 transitions, 255 flow [2022-12-13 18:04:59,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 125 transitions, 255 flow [2022-12-13 18:04:59,979 INFO L130 PetriNetUnfolder]: 8/136 cut-off events. [2022-12-13 18:04:59,979 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:04:59,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 8/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2022-12-13 18:04:59,983 INFO L119 LiptonReduction]: Number of co-enabled transitions 2436 [2022-12-13 18:05:04,585 INFO L134 LiptonReduction]: Checked pairs total: 2550 [2022-12-13 18:05:04,585 INFO L136 LiptonReduction]: Total number of compositions: 139 [2022-12-13 18:05:04,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:05:04,600 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;@413bf67c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:05:04,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 18:05:04,602 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2022-12-13 18:05:04,603 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:05:04,603 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:05:04,603 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 18:05:04,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 18:05:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:04,607 INFO L85 PathProgramCache]: Analyzing trace with hash -703797148, now seen corresponding path program 1 times [2022-12-13 18:05:04,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:04,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734438380] [2022-12-13 18:05:04,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:04,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:05:04,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:05:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:05:04,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:05:04,712 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:05:04,713 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 18:05:04,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 18:05:04,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 18:05:04,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 18:05:04,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 18:05:04,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 18:05:04,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 18:05:04,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 18:05:04,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 18:05:04,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 18:05:04,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 18:05:04,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 18:05:04,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 18:05:04,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 18:05:04,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 18:05:04,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 18:05:04,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 18:05:04,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 18:05:04,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 18:05:04,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 18:05:04,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 18:05:04,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:05:04,719 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 18:05:04,721 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:05:04,721 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 18:05:04,761 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:05:04,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 213 transitions, 438 flow [2022-12-13 18:05:04,795 INFO L130 PetriNetUnfolder]: 15/237 cut-off events. [2022-12-13 18:05:04,795 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:05:04,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 237 events. 15/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 510 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 187. Up to 6 conditions per place. [2022-12-13 18:05:04,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 213 transitions, 438 flow [2022-12-13 18:05:04,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 213 transitions, 438 flow [2022-12-13 18:05:04,800 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:05:04,800 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 213 transitions, 438 flow [2022-12-13 18:05:04,800 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 213 transitions, 438 flow [2022-12-13 18:05:04,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 213 transitions, 438 flow [2022-12-13 18:05:04,825 INFO L130 PetriNetUnfolder]: 15/237 cut-off events. [2022-12-13 18:05:04,825 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:05:04,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 237 events. 15/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 510 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 187. Up to 6 conditions per place. [2022-12-13 18:05:04,838 INFO L119 LiptonReduction]: Number of co-enabled transitions 20184 [2022-12-13 18:05:08,568 INFO L134 LiptonReduction]: Checked pairs total: 58077 [2022-12-13 18:05:08,568 INFO L136 LiptonReduction]: Total number of compositions: 164 [2022-12-13 18:05:08,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:05:08,571 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;@413bf67c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:05:08,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-12-13 18:05:08,575 INFO L130 PetriNetUnfolder]: 2/24 cut-off events. [2022-12-13 18:05:08,576 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:05:08,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:05:08,576 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:05:08,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 18:05:08,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1962930035, now seen corresponding path program 1 times [2022-12-13 18:05:08,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:08,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972223836] [2022-12-13 18:05:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:08,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:05:08,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:08,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972223836] [2022-12-13 18:05:08,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972223836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:08,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:08,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:05:08,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229122526] [2022-12-13 18:05:08,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:08,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:05:08,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:08,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:05:08,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:05:08,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 377 [2022-12-13 18:05:08,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:08,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:05:08,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 377 [2022-12-13 18:05:08,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:05:09,046 INFO L130 PetriNetUnfolder]: 1280/3096 cut-off events. [2022-12-13 18:05:09,047 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-12-13 18:05:09,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5189 conditions, 3096 events. 1280/3096 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 24227 event pairs, 203 based on Foata normal form. 0/2305 useless extension candidates. Maximal degree in co-relation 3458. Up to 1532 conditions per place. [2022-12-13 18:05:09,060 INFO L137 encePairwiseOnDemand]: 364/377 looper letters, 74 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2022-12-13 18:05:09,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 415 flow [2022-12-13 18:05:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:05:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:05:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2022-12-13 18:05:09,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5764809902740937 [2022-12-13 18:05:09,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2022-12-13 18:05:09,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2022-12-13 18:05:09,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:05:09,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2022-12-13 18:05:09,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:09,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:09,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:09,089 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 190 flow. Second operand 3 states and 652 transitions. [2022-12-13 18:05:09,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 415 flow [2022-12-13 18:05:09,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 120 transitions, 413 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 18:05:09,093 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 212 flow [2022-12-13 18:05:09,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=85, PETRI_TRANSITIONS=86} [2022-12-13 18:05:09,097 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2022-12-13 18:05:09,097 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 212 flow [2022-12-13 18:05:09,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:09,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:05:09,098 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 18:05:09,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:05:09,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 18:05:09,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:09,098 INFO L85 PathProgramCache]: Analyzing trace with hash -10851734, now seen corresponding path program 1 times [2022-12-13 18:05:09,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:09,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385164787] [2022-12-13 18:05:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:09,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:05:09,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:05:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:05:09,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:05:09,123 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:05:09,123 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-12-13 18:05:09,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2022-12-13 18:05:09,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2022-12-13 18:05:09,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2022-12-13 18:05:09,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2022-12-13 18:05:09,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2022-12-13 18:05:09,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2022-12-13 18:05:09,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2022-12-13 18:05:09,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2022-12-13 18:05:09,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2022-12-13 18:05:09,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2022-12-13 18:05:09,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2022-12-13 18:05:09,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2022-12-13 18:05:09,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2022-12-13 18:05:09,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2022-12-13 18:05:09,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2022-12-13 18:05:09,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2022-12-13 18:05:09,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2022-12-13 18:05:09,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2022-12-13 18:05:09,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2022-12-13 18:05:09,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2022-12-13 18:05:09,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2022-12-13 18:05:09,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2022-12-13 18:05:09,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2022-12-13 18:05:09,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2022-12-13 18:05:09,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2022-12-13 18:05:09,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2022-12-13 18:05:09,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2022-12-13 18:05:09,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2022-12-13 18:05:09,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2022-12-13 18:05:09,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2022-12-13 18:05:09,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:05:09,126 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 18:05:09,127 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:05:09,127 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 18:05:09,171 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:05:09,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 301 transitions, 623 flow [2022-12-13 18:05:09,215 INFO L130 PetriNetUnfolder]: 22/338 cut-off events. [2022-12-13 18:05:09,215 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 18:05:09,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 338 events. 22/338 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 998 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 274. Up to 8 conditions per place. [2022-12-13 18:05:09,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 301 transitions, 623 flow [2022-12-13 18:05:09,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 301 transitions, 623 flow [2022-12-13 18:05:09,221 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:05:09,221 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 301 transitions, 623 flow [2022-12-13 18:05:09,221 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 301 transitions, 623 flow [2022-12-13 18:05:09,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 301 transitions, 623 flow [2022-12-13 18:05:09,259 INFO L130 PetriNetUnfolder]: 22/338 cut-off events. [2022-12-13 18:05:09,259 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 18:05:09,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 338 events. 22/338 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 998 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 274. Up to 8 conditions per place. [2022-12-13 18:05:09,274 INFO L119 LiptonReduction]: Number of co-enabled transitions 53244 [2022-12-13 18:05:14,112 INFO L134 LiptonReduction]: Checked pairs total: 157856 [2022-12-13 18:05:14,112 INFO L136 LiptonReduction]: Total number of compositions: 220 [2022-12-13 18:05:14,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:05:14,115 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;@413bf67c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:05:14,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-12-13 18:05:14,118 INFO L130 PetriNetUnfolder]: 2/25 cut-off events. [2022-12-13 18:05:14,118 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:05:14,118 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:05:14,118 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:05:14,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-13 18:05:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:14,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1665966148, now seen corresponding path program 1 times [2022-12-13 18:05:14,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:14,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498417984] [2022-12-13 18:05:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:14,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:05:14,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:14,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498417984] [2022-12-13 18:05:14,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498417984] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:14,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:14,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:05:14,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840035046] [2022-12-13 18:05:14,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:14,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:05:14,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:14,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:05:14,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:05:14,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 521 [2022-12-13 18:05:14,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 131 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:14,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:05:14,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 521 [2022-12-13 18:05:14,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:05:20,375 INFO L130 PetriNetUnfolder]: 47795/84051 cut-off events. [2022-12-13 18:05:20,376 INFO L131 PetriNetUnfolder]: For 2659/2659 co-relation queries the response was YES. [2022-12-13 18:05:20,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151030 conditions, 84051 events. 47795/84051 cut-off events. For 2659/2659 co-relation queries the response was YES. Maximal size of possible extension queue 2785. Compared 826102 event pairs, 8569 based on Foata normal form. 866/61398 useless extension candidates. Maximal degree in co-relation 84628. Up to 39242 conditions per place. [2022-12-13 18:05:20,774 INFO L137 encePairwiseOnDemand]: 502/521 looper letters, 194 selfloop transitions, 15 changer transitions 0/269 dead transitions. [2022-12-13 18:05:20,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 269 transitions, 1008 flow [2022-12-13 18:05:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:05:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:05:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1519 transitions. [2022-12-13 18:05:20,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5831094049904031 [2022-12-13 18:05:20,778 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1519 transitions. [2022-12-13 18:05:20,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1519 transitions. [2022-12-13 18:05:20,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:05:20,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1519 transitions. [2022-12-13 18:05:20,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.8) internal successors, (1519), 5 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:20,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 521.0) internal successors, (3126), 6 states have internal predecessors, (3126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:20,786 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 521.0) internal successors, (3126), 6 states have internal predecessors, (3126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:20,786 INFO L175 Difference]: Start difference. First operand has 123 places, 131 transitions, 283 flow. Second operand 5 states and 1519 transitions. [2022-12-13 18:05:20,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 269 transitions, 1008 flow [2022-12-13 18:05:20,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 269 transitions, 996 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-12-13 18:05:20,797 INFO L231 Difference]: Finished difference. Result has 130 places, 137 transitions, 385 flow [2022-12-13 18:05:20,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=122, 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=130, PETRI_TRANSITIONS=137} [2022-12-13 18:05:20,799 INFO L288 CegarLoopForPetriNet]: 123 programPoint places, 7 predicate places. [2022-12-13 18:05:20,799 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 137 transitions, 385 flow [2022-12-13 18:05:20,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:20,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:05:20,800 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:05:20,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:05:20,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-13 18:05:20,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:20,801 INFO L85 PathProgramCache]: Analyzing trace with hash -413421834, now seen corresponding path program 1 times [2022-12-13 18:05:20,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:20,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307072987] [2022-12-13 18:05:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:20,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:05:20,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:20,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307072987] [2022-12-13 18:05:20,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307072987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:20,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:20,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:05:20,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899799701] [2022-12-13 18:05:20,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:20,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:05:20,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:20,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:05:20,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:05:20,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 521 [2022-12-13 18:05:20,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 137 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:20,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:05:20,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 521 [2022-12-13 18:05:20,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:05:35,152 INFO L130 PetriNetUnfolder]: 120122/181829 cut-off events. [2022-12-13 18:05:35,152 INFO L131 PetriNetUnfolder]: For 45443/46100 co-relation queries the response was YES. [2022-12-13 18:05:35,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381452 conditions, 181829 events. 120122/181829 cut-off events. For 45443/46100 co-relation queries the response was YES. Maximal size of possible extension queue 9679. Compared 1702831 event pairs, 42514 based on Foata normal form. 4655/158919 useless extension candidates. Maximal degree in co-relation 198507. Up to 161411 conditions per place. [2022-12-13 18:05:36,155 INFO L137 encePairwiseOnDemand]: 496/521 looper letters, 121 selfloop transitions, 4 changer transitions 0/171 dead transitions. [2022-12-13 18:05:36,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 171 transitions, 769 flow [2022-12-13 18:05:36,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:05:36,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:05:36,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 855 transitions. [2022-12-13 18:05:36,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5470249520153551 [2022-12-13 18:05:36,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 855 transitions. [2022-12-13 18:05:36,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 855 transitions. [2022-12-13 18:05:36,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:05:36,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 855 transitions. [2022-12-13 18:05:36,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:36,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 521.0) internal successors, (2084), 4 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:36,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 521.0) internal successors, (2084), 4 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:36,163 INFO L175 Difference]: Start difference. First operand has 130 places, 137 transitions, 385 flow. Second operand 3 states and 855 transitions. [2022-12-13 18:05:36,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 171 transitions, 769 flow [2022-12-13 18:05:36,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 171 transitions, 769 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:05:36,179 INFO L231 Difference]: Finished difference. Result has 133 places, 140 transitions, 451 flow [2022-12-13 18:05:36,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=133, PETRI_TRANSITIONS=140} [2022-12-13 18:05:36,180 INFO L288 CegarLoopForPetriNet]: 123 programPoint places, 10 predicate places. [2022-12-13 18:05:36,180 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 140 transitions, 451 flow [2022-12-13 18:05:36,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:36,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:05:36,181 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 18:05:36,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:05:36,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-13 18:05:36,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:36,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1831885103, now seen corresponding path program 1 times [2022-12-13 18:05:36,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:36,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052428687] [2022-12-13 18:05:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:36,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:05:36,194 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:05:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:05:36,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:05:36,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:05:36,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2022-12-13 18:05:36,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2022-12-13 18:05:36,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2022-12-13 18:05:36,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2022-12-13 18:05:36,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2022-12-13 18:05:36,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2022-12-13 18:05:36,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2022-12-13 18:05:36,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2022-12-13 18:05:36,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2022-12-13 18:05:36,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2022-12-13 18:05:36,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2022-12-13 18:05:36,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2022-12-13 18:05:36,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2022-12-13 18:05:36,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2022-12-13 18:05:36,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2022-12-13 18:05:36,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2022-12-13 18:05:36,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2022-12-13 18:05:36,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2022-12-13 18:05:36,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2022-12-13 18:05:36,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2022-12-13 18:05:36,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2022-12-13 18:05:36,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2022-12-13 18:05:36,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2022-12-13 18:05:36,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2022-12-13 18:05:36,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2022-12-13 18:05:36,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2022-12-13 18:05:36,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2022-12-13 18:05:36,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2022-12-13 18:05:36,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2022-12-13 18:05:36,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2022-12-13 18:05:36,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2022-12-13 18:05:36,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2022-12-13 18:05:36,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2022-12-13 18:05:36,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2022-12-13 18:05:36,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2022-12-13 18:05:36,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2022-12-13 18:05:36,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2022-12-13 18:05:36,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2022-12-13 18:05:36,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2022-12-13 18:05:36,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2022-12-13 18:05:36,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2022-12-13 18:05:36,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:05:36,211 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 18:05:36,212 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:05:36,212 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 18:05:36,257 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:05:36,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 389 transitions, 810 flow [2022-12-13 18:05:36,321 INFO L130 PetriNetUnfolder]: 29/439 cut-off events. [2022-12-13 18:05:36,321 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 18:05:36,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 439 events. 29/439 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1577 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 361. Up to 10 conditions per place. [2022-12-13 18:05:36,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 373 places, 389 transitions, 810 flow [2022-12-13 18:05:36,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 389 transitions, 810 flow [2022-12-13 18:05:36,330 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:05:36,330 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 373 places, 389 transitions, 810 flow [2022-12-13 18:05:36,330 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 373 places, 389 transitions, 810 flow [2022-12-13 18:05:36,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 389 transitions, 810 flow [2022-12-13 18:05:36,562 INFO L130 PetriNetUnfolder]: 29/439 cut-off events. [2022-12-13 18:05:36,563 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 18:05:36,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 439 events. 29/439 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1577 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 361. Up to 10 conditions per place. [2022-12-13 18:05:36,588 INFO L119 LiptonReduction]: Number of co-enabled transitions 101616 [2022-12-13 18:05:43,381 INFO L134 LiptonReduction]: Checked pairs total: 303797 [2022-12-13 18:05:43,381 INFO L136 LiptonReduction]: Total number of compositions: 288 [2022-12-13 18:05:43,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:05:43,383 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;@413bf67c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:05:43,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2022-12-13 18:05:43,386 INFO L130 PetriNetUnfolder]: 2/25 cut-off events. [2022-12-13 18:05:43,386 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:05:43,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:05:43,387 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:05:43,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2022-12-13 18:05:43,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:43,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1409925587, now seen corresponding path program 1 times [2022-12-13 18:05:43,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:43,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842846728] [2022-12-13 18:05:43,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:43,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:05:43,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:43,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842846728] [2022-12-13 18:05:43,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842846728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:43,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:43,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:05:43,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776645379] [2022-12-13 18:05:43,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:43,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:05:43,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:43,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:05:43,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:05:43,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 677 [2022-12-13 18:05:43,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 173 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:43,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:05:43,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 677 [2022-12-13 18:05:43,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:58,535 INFO L130 PetriNetUnfolder]: 1123361/1714757 cut-off events. [2022-12-13 18:07:58,536 INFO L131 PetriNetUnfolder]: For 80196/80196 co-relation queries the response was YES. [2022-12-13 18:08:02,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3169204 conditions, 1714757 events. 1123361/1714757 cut-off events. For 80196/80196 co-relation queries the response was YES. Maximal size of possible extension queue 42055. Compared 18751095 event pairs, 160035 based on Foata normal form. 13726/1279665 useless extension candidates. Maximal degree in co-relation 646266. Up to 820044 conditions per place. [2022-12-13 18:08:10,546 INFO L137 encePairwiseOnDemand]: 652/677 looper letters, 260 selfloop transitions, 19 changer transitions 0/359 dead transitions. [2022-12-13 18:08:10,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 359 transitions, 1366 flow [2022-12-13 18:08:10,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:08:10,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:08:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1985 transitions. [2022-12-13 18:08:10,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5864106351550961 [2022-12-13 18:08:10,550 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1985 transitions. [2022-12-13 18:08:10,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1985 transitions. [2022-12-13 18:08:10,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:08:10,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1985 transitions. [2022-12-13 18:08:10,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 397.0) internal successors, (1985), 5 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:08:10,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 677.0) internal successors, (4062), 6 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) [2022-12-13 18:08:10,561 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 677.0) internal successors, (4062), 6 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) [2022-12-13 18:08:10,561 INFO L175 Difference]: Start difference. First operand has 162 places, 173 transitions, 378 flow. Second operand 5 states and 1985 transitions. [2022-12-13 18:08:10,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 359 transitions, 1366 flow [2022-12-13 18:08:10,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 359 transitions, 1336 flow, removed 15 selfloop flow, removed 0 redundant places. [2022-12-13 18:08:10,636 INFO L231 Difference]: Finished difference. Result has 167 places, 179 transitions, 498 flow [2022-12-13 18:08:10,636 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=167, PETRI_TRANSITIONS=179} [2022-12-13 18:08:10,637 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 5 predicate places. [2022-12-13 18:08:10,637 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 179 transitions, 498 flow [2022-12-13 18:08:10,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:08:10,637 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:08:10,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:08:10,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:08:10,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2022-12-13 18:08:10,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:08:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1687107993, now seen corresponding path program 1 times [2022-12-13 18:08:10,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:08:10,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843533594] [2022-12-13 18:08:10,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:10,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:08:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:08:10,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:08:10,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843533594] [2022-12-13 18:08:10,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843533594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:08:10,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:08:10,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:08:10,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515297424] [2022-12-13 18:08:10,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:08:10,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:08:10,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:08:10,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:08:10,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:08:10,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 677 [2022-12-13 18:08:10,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 179 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:08:10,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:08:10,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 677 [2022-12-13 18:08:10,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand