./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 3efee66e785ce3d2f2ce0101e78a1cdae99209fb089cd0ed9c95f4aa53c186ea --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:17:18,277 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:17:18,358 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 22:17:18,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:17:18,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:17:18,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:17:18,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:17:18,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:17:18,395 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:17:18,396 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:17:18,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:17:18,397 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:17:18,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:17:18,398 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:17:18,399 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:17:18,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:17:18,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:17:18,400 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:17:18,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:17:18,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:17:18,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:17:18,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:17:18,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:17:18,403 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:17:18,404 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:17:18,404 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:17:18,404 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:17:18,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:17:18,405 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:17:18,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:17:18,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:17:18,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:17:18,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:17:18,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:17:18,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:17:18,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:17:18,408 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:17:18,408 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:17:18,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:17:18,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:17:18,409 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:17:18,409 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:17:18,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:17:18,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:17:18,410 INFO L153 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_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3efee66e785ce3d2f2ce0101e78a1cdae99209fb089cd0ed9c95f4aa53c186ea [2023-11-21 22:17:18,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:17:18,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:17:18,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:17:18,705 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:17:18,706 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:17:18,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i [2023-11-21 22:17:21,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:17:22,205 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:17:22,206 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i [2023-11-21 22:17:22,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/data/5330b651f/10992bf63a274a24adabdf270b0541ae/FLAG67a1a66ba [2023-11-21 22:17:22,246 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/data/5330b651f/10992bf63a274a24adabdf270b0541ae [2023-11-21 22:17:22,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:17:22,255 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:17:22,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:17:22,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:17:22,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:17:22,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:22,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25aa50d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22, skipping insertion in model container [2023-11-21 22:17:22,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:22,333 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:17:22,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:17:22,873 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:17:22,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:17:22,987 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:17:22,987 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:17:22,995 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:17:22,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22 WrapperNode [2023-11-21 22:17:22,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:17:22,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:17:22,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:17:22,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:17:23,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:23,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:23,090 INFO L138 Inliner]: procedures = 179, calls = 50, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 202 [2023-11-21 22:17:23,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:17:23,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:17:23,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:17:23,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:17:23,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:23,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:23,120 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:23,145 INFO L187 HeapSplitter]: Split 25 memory accesses to 5 slices as follows [2, 1, 6, 4, 12] [2023-11-21 22:17:23,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:23,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:23,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:23,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:23,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:23,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:23,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:17:23,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:17:23,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:17:23,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:17:23,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (1/1) ... [2023-11-21 22:17:23,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:17:23,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:23,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:17:23,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9843517f-dd3b-4576-9b59-2fb94e3208b8/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:17:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:17:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:17:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:17:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 22:17:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 22:17:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-21 22:17:23,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-21 22:17:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:17:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:17:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:17:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:17:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:17:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:17:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:17:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:17:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:17:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:17:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:17:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:17:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:17:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:17:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:17:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:17:23,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:17:23,289 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:17:23,448 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:17:23,451 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:17:23,876 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:17:24,296 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:17:24,297 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 22:17:24,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:17:24 BoogieIcfgContainer [2023-11-21 22:17:24,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:17:24,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:17:24,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:17:24,308 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:17:24,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:17:22" (1/3) ... [2023-11-21 22:17:24,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a4e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:17:24, skipping insertion in model container [2023-11-21 22:17:24,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:22" (2/3) ... [2023-11-21 22:17:24,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a4e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:17:24, skipping insertion in model container [2023-11-21 22:17:24,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:17:24" (3/3) ... [2023-11-21 22:17:24,313 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-1.i [2023-11-21 22:17:24,324 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:17:24,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:17:24,337 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-21 22:17:24,337 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:17:24,422 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:17:24,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 54 transitions, 112 flow [2023-11-21 22:17:24,521 INFO L124 PetriNetUnfolderBase]: 6/56 cut-off events. [2023-11-21 22:17:24,521 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:17:24,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 56 events. 6/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 51. Up to 3 conditions per place. [2023-11-21 22:17:24,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 54 transitions, 112 flow [2023-11-21 22:17:24,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 54 transitions, 112 flow [2023-11-21 22:17:24,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:17:24,565 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=LoopHeads, 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;@56276ada, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:17:24,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-21 22:17:24,572 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:17:24,572 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-21 22:17:24,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:17:24,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:24,573 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-21 22:17:24,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-21 22:17:24,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:24,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1659963102, now seen corresponding path program 1 times [2023-11-21 22:17:24,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:24,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919505142] [2023-11-21 22:17:24,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:24,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:24,726 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:17:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:24,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:17:24,781 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:17:24,783 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-21 22:17:24,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-21 22:17:24,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-21 22:17:24,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-21 22:17:24,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-21 22:17:24,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-21 22:17:24,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-21 22:17:24,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-21 22:17:24,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-21 22:17:24,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-21 22:17:24,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-21 22:17:24,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-21 22:17:24,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-21 22:17:24,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-21 22:17:24,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-21 22:17:24,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-21 22:17:24,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-21 22:17:24,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-21 22:17:24,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-21 22:17:24,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-21 22:17:24,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-21 22:17:24,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:17:24,792 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:17:24,795 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:17:24,796 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:17:24,864 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:17:24,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 103 transitions, 216 flow [2023-11-21 22:17:24,921 INFO L124 PetriNetUnfolderBase]: 12/108 cut-off events. [2023-11-21 22:17:24,921 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:17:24,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 108 events. 12/108 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 239 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 99. Up to 3 conditions per place. [2023-11-21 22:17:24,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 103 transitions, 216 flow [2023-11-21 22:17:24,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 103 transitions, 216 flow [2023-11-21 22:17:24,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:17:24,947 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=LoopHeads, 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;@56276ada, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:17:24,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-21 22:17:24,958 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:17:24,959 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-11-21 22:17:24,959 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:17:24,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:24,959 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-21 22:17:24,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-21 22:17:24,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:24,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1262172786, now seen corresponding path program 1 times [2023-11-21 22:17:24,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:24,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697211178] [2023-11-21 22:17:24,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:24,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:25,034 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:17:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:25,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:17:25,122 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:17:25,123 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-21 22:17:25,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2023-11-21 22:17:25,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2023-11-21 22:17:25,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2023-11-21 22:17:25,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2023-11-21 22:17:25,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2023-11-21 22:17:25,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2023-11-21 22:17:25,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2023-11-21 22:17:25,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2023-11-21 22:17:25,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2023-11-21 22:17:25,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2023-11-21 22:17:25,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2023-11-21 22:17:25,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2023-11-21 22:17:25,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2023-11-21 22:17:25,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2023-11-21 22:17:25,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2023-11-21 22:17:25,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2023-11-21 22:17:25,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2023-11-21 22:17:25,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2023-11-21 22:17:25,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2023-11-21 22:17:25,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2023-11-21 22:17:25,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2023-11-21 22:17:25,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2023-11-21 22:17:25,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2023-11-21 22:17:25,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2023-11-21 22:17:25,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2023-11-21 22:17:25,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2023-11-21 22:17:25,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2023-11-21 22:17:25,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2023-11-21 22:17:25,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2023-11-21 22:17:25,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2023-11-21 22:17:25,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:17:25,168 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:17:25,169 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:17:25,174 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 22:17:25,282 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:17:25,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 152 transitions, 322 flow [2023-11-21 22:17:25,365 INFO L124 PetriNetUnfolderBase]: 18/160 cut-off events. [2023-11-21 22:17:25,365 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 22:17:25,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 160 events. 18/160 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 509 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 147. Up to 4 conditions per place. [2023-11-21 22:17:25,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 152 transitions, 322 flow [2023-11-21 22:17:25,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 152 transitions, 322 flow [2023-11-21 22:17:25,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:17:25,382 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=LoopHeads, 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;@56276ada, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:17:25,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-21 22:17:25,395 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:17:25,395 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2023-11-21 22:17:25,395 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 22:17:25,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:25,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:25,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-21 22:17:25,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:25,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1864803970, now seen corresponding path program 1 times [2023-11-21 22:17:25,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:25,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808862792] [2023-11-21 22:17:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:25,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:25,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:25,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808862792] [2023-11-21 22:17:25,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808862792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:25,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:25,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:17:25,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72013799] [2023-11-21 22:17:25,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:25,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:17:25,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:25,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:17:25,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:17:25,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 152 [2023-11-21 22:17:25,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 152 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:25,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:25,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 152 [2023-11-21 22:17:25,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:54,565 INFO L124 PetriNetUnfolderBase]: 162649/250578 cut-off events. [2023-11-21 22:17:54,566 INFO L125 PetriNetUnfolderBase]: For 4466/4466 co-relation queries the response was YES. [2023-11-21 22:17:55,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468195 conditions, 250578 events. 162649/250578 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 7709. Compared 2292278 event pairs, 54853 based on Foata normal form. 9672/233226 useless extension candidates. Maximal degree in co-relation 362235. Up to 206614 conditions per place. [2023-11-21 22:17:56,338 INFO L140 encePairwiseOnDemand]: 120/152 looper letters, 117 selfloop transitions, 4 changer transitions 0/176 dead transitions. [2023-11-21 22:17:56,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 176 transitions, 624 flow [2023-11-21 22:17:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:17:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:17:56,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-11-21 22:17:56,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6973684210526315 [2023-11-21 22:17:56,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-11-21 22:17:56,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-11-21 22:17:56,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:56,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-11-21 22:17:56,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:56,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:56,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:56,373 INFO L175 Difference]: Start difference. First operand has 141 places, 152 transitions, 322 flow. Second operand 3 states and 318 transitions. [2023-11-21 22:17:56,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 176 transitions, 624 flow [2023-11-21 22:17:56,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 176 transitions, 620 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-21 22:17:56,397 INFO L231 Difference]: Finished difference. Result has 143 places, 148 transitions, 372 flow [2023-11-21 22:17:56,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=143, PETRI_TRANSITIONS=148} [2023-11-21 22:17:56,407 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, 2 predicate places. [2023-11-21 22:17:56,410 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 148 transitions, 372 flow [2023-11-21 22:17:56,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:56,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:56,411 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-21 22:17:56,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:17:56,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-21 22:17:56,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:56,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1435153059, now seen corresponding path program 1 times [2023-11-21 22:17:56,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:56,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344438348] [2023-11-21 22:17:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:56,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:56,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:17:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:56,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:17:56,503 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:17:56,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2023-11-21 22:17:56,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2023-11-21 22:17:56,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2023-11-21 22:17:56,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2023-11-21 22:17:56,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2023-11-21 22:17:56,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2023-11-21 22:17:56,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2023-11-21 22:17:56,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2023-11-21 22:17:56,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2023-11-21 22:17:56,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2023-11-21 22:17:56,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2023-11-21 22:17:56,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2023-11-21 22:17:56,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2023-11-21 22:17:56,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2023-11-21 22:17:56,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2023-11-21 22:17:56,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2023-11-21 22:17:56,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2023-11-21 22:17:56,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2023-11-21 22:17:56,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2023-11-21 22:17:56,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2023-11-21 22:17:56,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2023-11-21 22:17:56,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2023-11-21 22:17:56,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2023-11-21 22:17:56,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2023-11-21 22:17:56,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2023-11-21 22:17:56,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2023-11-21 22:17:56,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2023-11-21 22:17:56,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2023-11-21 22:17:56,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2023-11-21 22:17:56,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2023-11-21 22:17:56,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2023-11-21 22:17:56,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2023-11-21 22:17:56,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2023-11-21 22:17:56,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2023-11-21 22:17:56,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2023-11-21 22:17:56,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2023-11-21 22:17:56,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2023-11-21 22:17:56,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2023-11-21 22:17:56,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2023-11-21 22:17:56,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2023-11-21 22:17:56,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2023-11-21 22:17:56,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:17:56,513 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-21 22:17:56,514 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:17:56,514 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-21 22:17:56,615 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:17:56,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 201 transitions, 430 flow [2023-11-21 22:17:56,688 INFO L124 PetriNetUnfolderBase]: 24/212 cut-off events. [2023-11-21 22:17:56,688 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 22:17:56,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 212 events. 24/212 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 799 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 195. Up to 5 conditions per place. [2023-11-21 22:17:56,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 201 transitions, 430 flow [2023-11-21 22:17:56,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 201 transitions, 430 flow [2023-11-21 22:17:56,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:17:56,703 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=LoopHeads, 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;@56276ada, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:17:56,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-11-21 22:17:56,710 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:17:56,710 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2023-11-21 22:17:56,710 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-21 22:17:56,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:56,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:56,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-11-21 22:17:56,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1981262274, now seen corresponding path program 1 times [2023-11-21 22:17:56,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:56,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229343700] [2023-11-21 22:17:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:56,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:56,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:56,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229343700] [2023-11-21 22:17:56,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229343700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:56,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:56,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:17:56,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368614971] [2023-11-21 22:17:56,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:56,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:17:56,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:56,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:17:56,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:17:56,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 201 [2023-11-21 22:17:56,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 201 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:56,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:56,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 201 [2023-11-21 22:17:56,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand