./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longest-2-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longest-2-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6bed9188bb7b7687ebd02ffac8f3cae5646a3288850778355d808dde868a6cf7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:10:49,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:10:49,230 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 21:10:49,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:10:49,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:10:49,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:10:49,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:10:49,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:10:49,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:10:49,319 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:10:49,320 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:10:49,321 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:10:49,322 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:10:49,324 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:10:49,324 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:10:49,325 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:10:49,325 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:10:49,326 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:10:49,326 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:10:49,327 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:10:49,327 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:10:49,328 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:10:49,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:10:49,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:10:49,330 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:10:49,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:10:49,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:10:49,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:10:49,332 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:10:49,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:10:49,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:10:49,334 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:10:49,335 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:10:49,335 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:10:49,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:10:49,335 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:10:49,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:10:49,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:10:49,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:10:49,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:49,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:10:49,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:10:49,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:10:49,338 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:10:49,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:10:49,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:10:49,340 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:10:49,340 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:10:49,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:10:49,340 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6bed9188bb7b7687ebd02ffac8f3cae5646a3288850778355d808dde868a6cf7 [2023-11-23 21:10:49,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:10:49,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:10:49,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:10:49,680 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:10:49,680 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:10:49,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-ext/25_stack_longest-2-pthread.i [2023-11-23 21:10:52,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:10:53,199 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:10:53,200 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/sv-benchmarks/c/pthread-ext/25_stack_longest-2-pthread.i [2023-11-23 21:10:53,216 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/data/1f6eaecba/ed3db99a505d4f4baa0306d21738bd33/FLAG7a7167356 [2023-11-23 21:10:53,232 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/data/1f6eaecba/ed3db99a505d4f4baa0306d21738bd33 [2023-11-23 21:10:53,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:10:53,237 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:10:53,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:53,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:10:53,245 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:10:53,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:53,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@893b056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53, skipping insertion in model container [2023-11-23 21:10:53,247 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:53,298 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:10:53,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:53,797 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:10:53,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:53,948 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:53,949 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:53,958 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:10:53,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53 WrapperNode [2023-11-23 21:10:53,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:53,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:53,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:10:53,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:10:53,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:54,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:54,037 INFO L138 Inliner]: procedures = 172, calls = 39, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 146 [2023-11-23 21:10:54,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:54,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:10:54,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:10:54,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:10:54,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:54,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:54,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:54,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:54,066 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:54,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:54,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:54,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:54,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:10:54,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:10:54,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:10:54,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:10:54,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:54,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:54,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:54,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:10:54,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a34936-2c1f-4013-b929-744ab2a8171f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:10:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-23 21:10:54,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-23 21:10:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:10:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 21:10:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:10:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:10:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:10:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:10:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:10:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:10:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 21:10:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:10:54,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:10:54,204 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:10:54,386 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:10:54,388 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:10:54,703 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:10:54,889 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:10:54,889 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:10:54,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:54 BoogieIcfgContainer [2023-11-23 21:10:54,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:10:54,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:10:54,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:10:54,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:10:54,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:10:53" (1/3) ... [2023-11-23 21:10:54,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454780a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:54, skipping insertion in model container [2023-11-23 21:10:54,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53" (2/3) ... [2023-11-23 21:10:54,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454780a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:54, skipping insertion in model container [2023-11-23 21:10:54,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:54" (3/3) ... [2023-11-23 21:10:54,905 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longest-2-pthread.i [2023-11-23 21:10:54,914 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:10:54,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:10:54,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-23 21:10:54,927 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:10:54,992 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:10:55,026 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 54 transitions, 112 flow [2023-11-23 21:10:55,107 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 226 states, 205 states have (on average 2.0390243902439025) internal successors, (418), 225 states have internal predecessors, (418), 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) [2023-11-23 21:10:55,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:10:55,133 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=FINITE_AUTOMATA, 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;@51e5bd88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:10:55,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-23 21:10:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 205 states have (on average 2.0390243902439025) internal successors, (418), 225 states have internal predecessors, (418), 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) [2023-11-23 21:10:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:10:55,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:55,143 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 21:10:55,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-23 21:10:55,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:55,149 INFO L85 PathProgramCache]: Analyzing trace with hash -955784338, now seen corresponding path program 1 times [2023-11-23 21:10:55,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:55,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534034878] [2023-11-23 21:10:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:55,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:10:55,328 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:10:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:10:55,416 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:10:55,418 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:10:55,419 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-23 21:10:55,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-23 21:10:55,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-23 21:10:55,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-23 21:10:55,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-23 21:10:55,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-23 21:10:55,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-23 21:10:55,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-23 21:10:55,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-23 21:10:55,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-23 21:10:55,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-23 21:10:55,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-23 21:10:55,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-23 21:10:55,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-23 21:10:55,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-23 21:10:55,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-23 21:10:55,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-23 21:10:55,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-23 21:10:55,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-23 21:10:55,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-23 21:10:55,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-23 21:10:55,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:10:55,436 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:10:55,438 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:10:55,438 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 21:10:55,513 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:10:55,526 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 103 transitions, 216 flow [2023-11-23 21:10:56,049 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10302 states, 10051 states have (on average 2.990150233807581) internal successors, (30054), 10301 states have internal predecessors, (30054), 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) [2023-11-23 21:10:56,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:10:56,059 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=FINITE_AUTOMATA, 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;@51e5bd88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:10:56,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-23 21:10:56,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 10302 states, 10051 states have (on average 2.990150233807581) internal successors, (30054), 10301 states have internal predecessors, (30054), 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) [2023-11-23 21:10:56,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:10:56,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:56,104 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-23 21:10:56,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-23 21:10:56,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:56,105 INFO L85 PathProgramCache]: Analyzing trace with hash -878346765, now seen corresponding path program 1 times [2023-11-23 21:10:56,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:56,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008403084] [2023-11-23 21:10:56,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:56,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:10:56,161 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:10:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:10:56,213 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:10:56,213 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:10:56,214 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-23 21:10:56,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2023-11-23 21:10:56,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2023-11-23 21:10:56,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2023-11-23 21:10:56,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2023-11-23 21:10:56,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2023-11-23 21:10:56,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2023-11-23 21:10:56,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2023-11-23 21:10:56,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2023-11-23 21:10:56,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2023-11-23 21:10:56,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2023-11-23 21:10:56,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2023-11-23 21:10:56,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2023-11-23 21:10:56,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2023-11-23 21:10:56,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2023-11-23 21:10:56,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2023-11-23 21:10:56,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2023-11-23 21:10:56,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2023-11-23 21:10:56,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2023-11-23 21:10:56,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2023-11-23 21:10:56,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2023-11-23 21:10:56,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2023-11-23 21:10:56,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2023-11-23 21:10:56,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2023-11-23 21:10:56,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2023-11-23 21:10:56,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2023-11-23 21:10:56,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2023-11-23 21:10:56,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2023-11-23 21:10:56,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2023-11-23 21:10:56,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2023-11-23 21:10:56,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2023-11-23 21:10:56,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:10:56,228 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:10:56,228 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:10:56,228 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 21:10:56,317 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:10:56,325 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 147 places, 152 transitions, 322 flow [2023-11-23 21:11:14,714 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 463894 states, 461103 states have (on average 4.008193397136865) internal successors, (1848190), 463893 states have internal predecessors, (1848190), 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) [2023-11-23 21:11:14,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:11:14,720 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=FINITE_AUTOMATA, 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;@51e5bd88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:11:14,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-23 21:11:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 463894 states, 461103 states have (on average 4.008193397136865) internal successors, (1848190), 463893 states have internal predecessors, (1848190), 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) [2023-11-23 21:11:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:11:15,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:15,529 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-23 21:11:15,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 21:11:15,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:15,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2021128269, now seen corresponding path program 1 times [2023-11-23 21:11:15,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:11:15,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232347977] [2023-11-23 21:11:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:15,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:11:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:11:15,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:11:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:11:15,595 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:11:15,600 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:11:15,600 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2023-11-23 21:11:15,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2023-11-23 21:11:15,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2023-11-23 21:11:15,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2023-11-23 21:11:15,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2023-11-23 21:11:15,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2023-11-23 21:11:15,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2023-11-23 21:11:15,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2023-11-23 21:11:15,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2023-11-23 21:11:15,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2023-11-23 21:11:15,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2023-11-23 21:11:15,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2023-11-23 21:11:15,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2023-11-23 21:11:15,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2023-11-23 21:11:15,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2023-11-23 21:11:15,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2023-11-23 21:11:15,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2023-11-23 21:11:15,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2023-11-23 21:11:15,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2023-11-23 21:11:15,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2023-11-23 21:11:15,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2023-11-23 21:11:15,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2023-11-23 21:11:15,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2023-11-23 21:11:15,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2023-11-23 21:11:15,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2023-11-23 21:11:15,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2023-11-23 21:11:15,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2023-11-23 21:11:15,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2023-11-23 21:11:15,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2023-11-23 21:11:15,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2023-11-23 21:11:15,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2023-11-23 21:11:15,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2023-11-23 21:11:15,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2023-11-23 21:11:15,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2023-11-23 21:11:15,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2023-11-23 21:11:15,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2023-11-23 21:11:15,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2023-11-23 21:11:15,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2023-11-23 21:11:15,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2023-11-23 21:11:15,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2023-11-23 21:11:15,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2023-11-23 21:11:15,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:11:15,613 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:11:15,613 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:11:15,614 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-23 21:11:15,715 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:11:15,721 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 194 places, 201 transitions, 430 flow