./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:18:39,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:18:39,138 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:18:39,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:18:39,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:18:39,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:18:39,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:18:39,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:18:39,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:18:39,184 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:18:39,185 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:18:39,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:18:39,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:18:39,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:18:39,187 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:18:39,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:18:39,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:18:39,188 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:18:39,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:18:39,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:18:39,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:18:39,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:18:39,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:18:39,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:18:39,191 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:18:39,192 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:18:39,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:18:39,193 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:18:39,193 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:18:39,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:18:39,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:18:39,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:18:39,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:18:39,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:18:39,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:18:39,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:18:39,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:18:39,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:18:39,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:18:39,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:18:39,198 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:18:39,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:18:39,200 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_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 [2024-10-31 22:18:39,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:18:39,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:18:39,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:18:39,535 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:18:39,536 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:18:39,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i Unable to find full path for "g++" [2024-10-31 22:18:41,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:18:41,842 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:18:41,843 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2024-10-31 22:18:41,864 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/data/f6cd88668/e1896d952c7d45968d94d216711534df/FLAGa5a29ada8 [2024-10-31 22:18:42,054 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/data/f6cd88668/e1896d952c7d45968d94d216711534df [2024-10-31 22:18:42,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:18:42,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:18:42,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:42,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:18:42,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:18:42,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:42,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423a66d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42, skipping insertion in model container [2024-10-31 22:18:42,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:42,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:18:42,346 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i[818,831] [2024-10-31 22:18:42,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:42,785 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:18:42,799 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i[818,831] [2024-10-31 22:18:42,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:42,953 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:18:42,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42 WrapperNode [2024-10-31 22:18:42,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:42,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:42,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:18:42,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:18:42,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:42,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:43,007 INFO L138 Inliner]: procedures = 364, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2024-10-31 22:18:43,008 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:43,009 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:18:43,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:18:43,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:18:43,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:43,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:43,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:43,035 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:18:43,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:43,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:43,041 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:43,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:43,046 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:43,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:43,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:18:43,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:18:43,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:18:43,053 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:18:43,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (1/1) ... [2024-10-31 22:18:43,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:18:43,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:43,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:43,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:18:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:18:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:18:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2024-10-31 22:18:43,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2024-10-31 22:18:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:18:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:18:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:18:43,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:18:43,142 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:18:43,302 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:18:43,304 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:18:43,490 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:18:43,490 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:18:43,956 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:18:43,956 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:18:43,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:43 BoogieIcfgContainer [2024-10-31 22:18:43,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:18:43,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:18:43,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:18:43,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:18:43,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:18:42" (1/3) ... [2024-10-31 22:18:43,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454c578b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:18:43, skipping insertion in model container [2024-10-31 22:18:43,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:42" (2/3) ... [2024-10-31 22:18:43,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454c578b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:18:43, skipping insertion in model container [2024-10-31 22:18:43,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:43" (3/3) ... [2024-10-31 22:18:43,966 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i [2024-10-31 22:18:43,984 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:18:43,985 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:18:43,985 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:18:44,025 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:18:44,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 22 transitions, 51 flow [2024-10-31 22:18:44,105 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2024-10-31 22:18:44,105 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:18:44,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 21 events. 3/21 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2024-10-31 22:18:44,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 22 transitions, 51 flow [2024-10-31 22:18:44,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 18 transitions, 42 flow [2024-10-31 22:18:44,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:18:44,133 INFO L333 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, 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;@26d004c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:18:44,133 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:18:44,141 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:18:44,141 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-10-31 22:18:44,141 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:18:44,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:44,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:44,143 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:18:44,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:44,148 INFO L85 PathProgramCache]: Analyzing trace with hash 159153663, now seen corresponding path program 1 times [2024-10-31 22:18:44,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:44,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120150107] [2024-10-31 22:18:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:44,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:44,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:44,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120150107] [2024-10-31 22:18:44,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120150107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:44,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:44,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:18:44,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207037895] [2024-10-31 22:18:44,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:44,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:44,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:44,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:18:44,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 22 [2024-10-31 22:18:44,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-31 22:18:44,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:44,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 22 [2024-10-31 22:18:44,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:44,661 INFO L124 PetriNetUnfolderBase]: 19/60 cut-off events. [2024-10-31 22:18:44,663 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:18:44,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 60 events. 19/60 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 131 event pairs, 6 based on Foata normal form. 3/59 useless extension candidates. Maximal degree in co-relation 90. Up to 29 conditions per place. [2024-10-31 22:18:44,667 INFO L140 encePairwiseOnDemand]: 19/22 looper letters, 14 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2024-10-31 22:18:44,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 23 transitions, 84 flow [2024-10-31 22:18:44,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:18:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-10-31 22:18:44,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-31 22:18:44,683 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 42 flow. Second operand 3 states and 44 transitions. [2024-10-31 22:18:44,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 23 transitions, 84 flow [2024-10-31 22:18:44,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 23 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:18:44,688 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 50 flow [2024-10-31 22:18:44,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2024-10-31 22:18:44,694 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 1 predicate places. [2024-10-31 22:18:44,694 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 50 flow [2024-10-31 22:18:44,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-31 22:18:44,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:44,695 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:44,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:18:44,695 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:18:44,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash -355610242, now seen corresponding path program 1 times [2024-10-31 22:18:44,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:44,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212990058] [2024-10-31 22:18:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:44,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:44,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:44,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212990058] [2024-10-31 22:18:44,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212990058] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:44,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:44,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:18:44,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993595487] [2024-10-31 22:18:44,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:44,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:44,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:44,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:44,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:18:44,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 22 [2024-10-31 22:18:44,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-10-31 22:18:44,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:44,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 22 [2024-10-31 22:18:44,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:44,956 INFO L124 PetriNetUnfolderBase]: 25/82 cut-off events. [2024-10-31 22:18:44,956 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-31 22:18:44,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 82 events. 25/82 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 241 event pairs, 10 based on Foata normal form. 6/87 useless extension candidates. Maximal degree in co-relation 75. Up to 41 conditions per place. [2024-10-31 22:18:44,958 INFO L140 encePairwiseOnDemand]: 19/22 looper letters, 16 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2024-10-31 22:18:44,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 25 transitions, 108 flow [2024-10-31 22:18:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:44,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:18:44,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-10-31 22:18:44,959 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-31 22:18:44,960 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 50 flow. Second operand 3 states and 44 transitions. [2024-10-31 22:18:44,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 25 transitions, 108 flow [2024-10-31 22:18:44,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:18:44,961 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 60 flow [2024-10-31 22:18:44,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-10-31 22:18:44,962 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2024-10-31 22:18:44,962 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 60 flow [2024-10-31 22:18:44,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-10-31 22:18:44,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:44,963 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:44,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:18:44,963 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:18:44,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash -553850407, now seen corresponding path program 1 times [2024-10-31 22:18:44,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:44,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705161806] [2024-10-31 22:18:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:44,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:45,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:45,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705161806] [2024-10-31 22:18:45,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705161806] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:45,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741907859] [2024-10-31 22:18:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:45,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:45,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:45,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:45,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:18:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:45,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:18:45,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:18:45,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:18:45,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741907859] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:45,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:45,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-31 22:18:45,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853618392] [2024-10-31 22:18:45,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:45,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:18:45,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:45,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:18:45,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:18:45,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2024-10-31 22:18:45,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 60 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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) [2024-10-31 22:18:45,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:45,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2024-10-31 22:18:45,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:45,782 INFO L124 PetriNetUnfolderBase]: 76/219 cut-off events. [2024-10-31 22:18:45,782 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-10-31 22:18:45,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 219 events. 76/219 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 706 event pairs, 4 based on Foata normal form. 30/247 useless extension candidates. Maximal degree in co-relation 166. Up to 61 conditions per place. [2024-10-31 22:18:45,786 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 41 selfloop transitions, 33 changer transitions 0/80 dead transitions. [2024-10-31 22:18:45,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 80 transitions, 406 flow [2024-10-31 22:18:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 22:18:45,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-31 22:18:45,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 216 transitions. [2024-10-31 22:18:45,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-10-31 22:18:45,790 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 60 flow. Second operand 16 states and 216 transitions. [2024-10-31 22:18:45,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 80 transitions, 406 flow [2024-10-31 22:18:45,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 80 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:18:45,795 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 332 flow [2024-10-31 22:18:45,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=332, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-10-31 22:18:45,796 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 30 predicate places. [2024-10-31 22:18:45,796 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 332 flow [2024-10-31 22:18:45,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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) [2024-10-31 22:18:45,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:45,797 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:45,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:18:45,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:45,998 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:18:45,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:45,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1305280635, now seen corresponding path program 2 times [2024-10-31 22:18:45,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:45,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137070624] [2024-10-31 22:18:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:46,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:18:46,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:46,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137070624] [2024-10-31 22:18:46,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137070624] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:46,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214698765] [2024-10-31 22:18:46,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:18:46,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:46,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:46,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:46,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:18:46,445 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:18:46,445 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:18:46,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:18:46,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:18:46,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:18:46,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214698765] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:46,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:46,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-31 22:18:46,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406146428] [2024-10-31 22:18:46,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:46,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:18:46,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:46,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:18:46,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:18:46,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2024-10-31 22:18:46,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 332 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 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) [2024-10-31 22:18:46,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:46,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2024-10-31 22:18:46,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:46,987 INFO L124 PetriNetUnfolderBase]: 166/452 cut-off events. [2024-10-31 22:18:46,988 INFO L125 PetriNetUnfolderBase]: For 3168/3177 co-relation queries the response was YES. [2024-10-31 22:18:46,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 452 events. 166/452 cut-off events. For 3168/3177 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1556 event pairs, 10 based on Foata normal form. 30/476 useless extension candidates. Maximal degree in co-relation 1472. Up to 133 conditions per place. [2024-10-31 22:18:46,994 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 110 selfloop transitions, 36 changer transitions 0/152 dead transitions. [2024-10-31 22:18:46,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 152 transitions, 1486 flow [2024-10-31 22:18:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:18:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:18:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 172 transitions. [2024-10-31 22:18:46,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-10-31 22:18:46,997 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 332 flow. Second operand 12 states and 172 transitions. [2024-10-31 22:18:46,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 152 transitions, 1486 flow [2024-10-31 22:18:47,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 152 transitions, 1358 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-10-31 22:18:47,023 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 552 flow [2024-10-31 22:18:47,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=552, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2024-10-31 22:18:47,026 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 46 predicate places. [2024-10-31 22:18:47,026 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 552 flow [2024-10-31 22:18:47,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 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) [2024-10-31 22:18:47,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:47,027 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:47,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:18:47,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:47,228 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:18:47,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:47,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1988966811, now seen corresponding path program 3 times [2024-10-31 22:18:47,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:47,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980492878] [2024-10-31 22:18:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:47,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:18:47,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:47,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980492878] [2024-10-31 22:18:47,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980492878] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:47,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221835165] [2024-10-31 22:18:47,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:18:47,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:47,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:47,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:47,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:18:47,886 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-31 22:18:47,886 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:18:47,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:18:47,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-31 22:18:47,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:48,012 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-31 22:18:48,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221835165] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:48,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:48,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-10-31 22:18:48,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141913279] [2024-10-31 22:18:48,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:48,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:18:48,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:48,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:18:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:18:48,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2024-10-31 22:18:48,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 552 flow. Second operand has 19 states, 19 states have (on average 10.421052631578947) internal successors, (198), 19 states have internal predecessors, (198), 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) [2024-10-31 22:18:48,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:48,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2024-10-31 22:18:48,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:50,550 INFO L124 PetriNetUnfolderBase]: 435/1345 cut-off events. [2024-10-31 22:18:50,550 INFO L125 PetriNetUnfolderBase]: For 10513/10523 co-relation queries the response was YES. [2024-10-31 22:18:50,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4793 conditions, 1345 events. 435/1345 cut-off events. For 10513/10523 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 7108 event pairs, 11 based on Foata normal form. 144/1477 useless extension candidates. Maximal degree in co-relation 3991. Up to 229 conditions per place. [2024-10-31 22:18:50,568 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 186 selfloop transitions, 204 changer transitions 0/402 dead transitions. [2024-10-31 22:18:50,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 402 transitions, 3528 flow [2024-10-31 22:18:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-10-31 22:18:50,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2024-10-31 22:18:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 1101 transitions. [2024-10-31 22:18:50,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5887700534759358 [2024-10-31 22:18:50,578 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 552 flow. Second operand 85 states and 1101 transitions. [2024-10-31 22:18:50,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 402 transitions, 3528 flow [2024-10-31 22:18:50,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 402 transitions, 3486 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:18:50,615 INFO L231 Difference]: Finished difference. Result has 209 places, 231 transitions, 2888 flow [2024-10-31 22:18:50,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=2888, PETRI_PLACES=209, PETRI_TRANSITIONS=231} [2024-10-31 22:18:50,619 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 189 predicate places. [2024-10-31 22:18:50,619 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 231 transitions, 2888 flow [2024-10-31 22:18:50,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.421052631578947) internal successors, (198), 19 states have internal predecessors, (198), 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) [2024-10-31 22:18:50,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:50,620 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:50,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:18:50,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:50,821 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:18:50,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash -195720770, now seen corresponding path program 4 times [2024-10-31 22:18:50,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:50,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627722326] [2024-10-31 22:18:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:50,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-31 22:18:51,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:51,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627722326] [2024-10-31 22:18:51,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627722326] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:51,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390520024] [2024-10-31 22:18:51,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:18:51,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:51,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:51,183 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:51,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:18:51,381 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:18:51,381 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:18:51,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:18:51,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-31 22:18:51,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-31 22:18:51,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390520024] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:51,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:51,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2024-10-31 22:18:51,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474169722] [2024-10-31 22:18:51,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:51,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-31 22:18:51,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:51,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-31 22:18:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-10-31 22:18:51,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2024-10-31 22:18:51,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 231 transitions, 2888 flow. Second operand has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 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) [2024-10-31 22:18:51,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:51,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2024-10-31 22:18:51,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:52,791 INFO L124 PetriNetUnfolderBase]: 590/1602 cut-off events. [2024-10-31 22:18:52,791 INFO L125 PetriNetUnfolderBase]: For 133180/133252 co-relation queries the response was YES. [2024-10-31 22:18:52,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11826 conditions, 1602 events. 590/1602 cut-off events. For 133180/133252 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 8437 event pairs, 28 based on Foata normal form. 81/1658 useless extension candidates. Maximal degree in co-relation 10816. Up to 498 conditions per place. [2024-10-31 22:18:52,827 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 293 selfloop transitions, 150 changer transitions 0/461 dead transitions. [2024-10-31 22:18:52,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 461 transitions, 8252 flow [2024-10-31 22:18:52,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-31 22:18:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-31 22:18:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 315 transitions. [2024-10-31 22:18:52,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6508264462809917 [2024-10-31 22:18:52,830 INFO L175 Difference]: Start difference. First operand has 209 places, 231 transitions, 2888 flow. Second operand 22 states and 315 transitions. [2024-10-31 22:18:52,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 461 transitions, 8252 flow [2024-10-31 22:18:53,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 461 transitions, 7372 flow, removed 368 selfloop flow, removed 15 redundant places. [2024-10-31 22:18:53,229 INFO L231 Difference]: Finished difference. Result has 225 places, 290 transitions, 3396 flow [2024-10-31 22:18:53,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3396, PETRI_PLACES=225, PETRI_TRANSITIONS=290} [2024-10-31 22:18:53,230 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 205 predicate places. [2024-10-31 22:18:53,230 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 290 transitions, 3396 flow [2024-10-31 22:18:53,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 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) [2024-10-31 22:18:53,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:53,231 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:53,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:18:53,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:53,432 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:18:53,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:53,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1523936837, now seen corresponding path program 5 times [2024-10-31 22:18:53,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:53,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479540581] [2024-10-31 22:18:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:53,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-31 22:18:53,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:53,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479540581] [2024-10-31 22:18:53,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479540581] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:53,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839240293] [2024-10-31 22:18:53,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 22:18:53,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:53,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:53,685 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:53,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:18:53,880 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-10-31 22:18:53,881 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:18:53,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:18:53,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-31 22:18:53,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-31 22:18:54,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839240293] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:54,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:54,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-10-31 22:18:54,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921217404] [2024-10-31 22:18:54,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:54,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-31 22:18:54,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-31 22:18:54,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:18:54,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2024-10-31 22:18:54,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 290 transitions, 3396 flow. Second operand has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 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) [2024-10-31 22:18:54,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:54,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2024-10-31 22:18:54,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:56,138 INFO L124 PetriNetUnfolderBase]: 1408/4010 cut-off events. [2024-10-31 22:18:56,138 INFO L125 PetriNetUnfolderBase]: For 623485/623493 co-relation queries the response was YES. [2024-10-31 22:18:56,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22229 conditions, 4010 events. 1408/4010 cut-off events. For 623485/623493 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 26091 event pairs, 168 based on Foata normal form. 382/4308 useless extension candidates. Maximal degree in co-relation 20661. Up to 741 conditions per place. [2024-10-31 22:18:56,361 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 620 selfloop transitions, 216 changer transitions 0/851 dead transitions. [2024-10-31 22:18:56,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 851 transitions, 12310 flow [2024-10-31 22:18:56,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 22:18:56,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-31 22:18:56,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 231 transitions. [2024-10-31 22:18:56,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-10-31 22:18:56,363 INFO L175 Difference]: Start difference. First operand has 225 places, 290 transitions, 3396 flow. Second operand 16 states and 231 transitions. [2024-10-31 22:18:56,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 851 transitions, 12310 flow [2024-10-31 22:18:57,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 851 transitions, 11804 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-31 22:18:57,452 INFO L231 Difference]: Finished difference. Result has 238 places, 398 transitions, 4722 flow [2024-10-31 22:18:57,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4722, PETRI_PLACES=238, PETRI_TRANSITIONS=398} [2024-10-31 22:18:57,453 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 218 predicate places. [2024-10-31 22:18:57,453 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 398 transitions, 4722 flow [2024-10-31 22:18:57,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 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) [2024-10-31 22:18:57,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:57,454 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:57,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:18:57,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:57,659 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:18:57,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:57,660 INFO L85 PathProgramCache]: Analyzing trace with hash 947048967, now seen corresponding path program 6 times [2024-10-31 22:18:57,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:57,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564659470] [2024-10-31 22:18:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:57,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 20 proven. 287 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-31 22:18:58,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:58,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564659470] [2024-10-31 22:18:58,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564659470] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50112556] [2024-10-31 22:18:58,345 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-31 22:18:58,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:58,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:58,348 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:58,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:18:58,681 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-10-31 22:18:58,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:18:58,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-31 22:18:58,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 20 proven. 287 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-31 22:18:58,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 20 proven. 287 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-31 22:18:59,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50112556] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:59,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:59,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-10-31 22:18:59,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890082643] [2024-10-31 22:18:59,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:59,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-31 22:18:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:59,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-31 22:18:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-10-31 22:18:59,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2024-10-31 22:18:59,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 398 transitions, 4722 flow. Second operand has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 23 states have internal predecessors, (240), 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) [2024-10-31 22:18:59,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:59,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2024-10-31 22:18:59,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:01,993 INFO L124 PetriNetUnfolderBase]: 1936/5504 cut-off events. [2024-10-31 22:19:01,993 INFO L125 PetriNetUnfolderBase]: For 653197/653215 co-relation queries the response was YES. [2024-10-31 22:19:02,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31265 conditions, 5504 events. 1936/5504 cut-off events. For 653197/653215 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 38413 event pairs, 174 based on Foata normal form. 298/5706 useless extension candidates. Maximal degree in co-relation 29135. Up to 1023 conditions per place. [2024-10-31 22:19:02,092 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 956 selfloop transitions, 288 changer transitions 0/1259 dead transitions. [2024-10-31 22:19:02,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1259 transitions, 18848 flow [2024-10-31 22:19:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-31 22:19:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-31 22:19:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 313 transitions. [2024-10-31 22:19:02,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6466942148760331 [2024-10-31 22:19:02,094 INFO L175 Difference]: Start difference. First operand has 238 places, 398 transitions, 4722 flow. Second operand 22 states and 313 transitions. [2024-10-31 22:19:02,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1259 transitions, 18848 flow [2024-10-31 22:19:04,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 1259 transitions, 18688 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:19:04,198 INFO L231 Difference]: Finished difference. Result has 261 places, 482 transitions, 6298 flow [2024-10-31 22:19:04,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4562, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6298, PETRI_PLACES=261, PETRI_TRANSITIONS=482} [2024-10-31 22:19:04,199 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 241 predicate places. [2024-10-31 22:19:04,199 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 482 transitions, 6298 flow [2024-10-31 22:19:04,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 23 states have internal predecessors, (240), 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) [2024-10-31 22:19:04,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:04,200 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:04,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-31 22:19:04,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:04,402 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:19:04,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:04,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1936420455, now seen corresponding path program 7 times [2024-10-31 22:19:04,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:04,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349992912] [2024-10-31 22:19:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:04,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:19:04,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:19:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:19:04,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:19:04,689 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:19:04,691 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-31 22:19:04,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-31 22:19:04,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:19:04,694 INFO L407 BasicCegarLoop]: Path program histogram: [7, 1, 1] [2024-10-31 22:19:04,859 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-31 22:19:04,859 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:19:04,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:19:04 BasicIcfg [2024-10-31 22:19:04,870 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:19:04,871 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:19:04,871 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:19:04,871 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:19:04,871 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:43" (3/4) ... [2024-10-31 22:19:04,872 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-31 22:19:05,021 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 22:19:05,021 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:19:05,022 INFO L158 Benchmark]: Toolchain (without parser) took 22963.84ms. Allocated memory was 151.0MB in the beginning and 958.4MB in the end (delta: 807.4MB). Free memory was 113.2MB in the beginning and 647.1MB in the end (delta: -533.8MB). Peak memory consumption was 275.3MB. Max. memory is 16.1GB. [2024-10-31 22:19:05,022 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory was 70.5MB in the beginning and 70.4MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:19:05,022 INFO L158 Benchmark]: CACSL2BoogieTranslator took 895.34ms. Allocated memory is still 151.0MB. Free memory was 112.8MB in the beginning and 111.6MB in the end (delta: 1.2MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2024-10-31 22:19:05,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.76ms. Allocated memory is still 151.0MB. Free memory was 111.6MB in the beginning and 108.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:19:05,023 INFO L158 Benchmark]: Boogie Preprocessor took 42.99ms. Allocated memory is still 151.0MB. Free memory was 108.7MB in the beginning and 106.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:19:05,023 INFO L158 Benchmark]: RCFGBuilder took 904.43ms. Allocated memory is still 151.0MB. Free memory was 106.5MB in the beginning and 103.1MB in the end (delta: 3.4MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2024-10-31 22:19:05,026 INFO L158 Benchmark]: TraceAbstraction took 20910.62ms. Allocated memory was 151.0MB in the beginning and 958.4MB in the end (delta: 807.4MB). Free memory was 102.1MB in the beginning and 667.2MB in the end (delta: -565.1MB). Peak memory consumption was 477.0MB. Max. memory is 16.1GB. [2024-10-31 22:19:05,027 INFO L158 Benchmark]: Witness Printer took 150.56ms. Allocated memory is still 958.4MB. Free memory was 667.2MB in the beginning and 647.1MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-31 22:19:05,029 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory was 70.5MB in the beginning and 70.4MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 895.34ms. Allocated memory is still 151.0MB. Free memory was 112.8MB in the beginning and 111.6MB in the end (delta: 1.2MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.76ms. Allocated memory is still 151.0MB. Free memory was 111.6MB in the beginning and 108.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.99ms. Allocated memory is still 151.0MB. Free memory was 108.7MB in the beginning and 106.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 904.43ms. Allocated memory is still 151.0MB. Free memory was 106.5MB in the beginning and 103.1MB in the end (delta: 3.4MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 20910.62ms. Allocated memory was 151.0MB in the beginning and 958.4MB in the end (delta: 807.4MB). Free memory was 102.1MB in the beginning and 667.2MB in the end (delta: -565.1MB). Peak memory consumption was 477.0MB. Max. memory is 16.1GB. * Witness Printer took 150.56ms. Allocated memory is still 958.4MB. Free memory was 667.2MB in the beginning and 647.1MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1320] 0 int myglobal; [L1321] 0 pthread_mutex_t mymutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1340] 0 pthread_t mythread; [L1341] 0 int i; [L1342] FCALL, FORK 0 pthread_create( &mythread, ((void *)0), thread_function_datarace, ((void *)0)) VAL [\old(arg)={0:0}, myglobal=0, mythread=-1] [L1342] COND FALSE 0 !(pthread_create( &mythread, ((void *)0), thread_function_datarace, ((void *)0))) [L1352] 0 i=0 VAL [\old(arg)={0:0}, i=0, myglobal=0, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=0, myglobal=0, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=0, myglobal=1, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=1, myglobal=1, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=1, myglobal=1, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=1, myglobal=2, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=2, myglobal=2, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=2, myglobal=2, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=2, myglobal=3, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=3, myglobal=3, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=3, myglobal=3, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=3, myglobal=4, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=4, myglobal=4, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=4, myglobal=4, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=4, myglobal=5, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=5, myglobal=5, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=5, myglobal=5, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=5, myglobal=6, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=6, myglobal=6, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=6, myglobal=6, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=6, myglobal=7, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=7, myglobal=7, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=7, myglobal=7, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=7, myglobal=8, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=8, myglobal=8, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=8, myglobal=8, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=8, myglobal=9, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=9, myglobal=9, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=9, myglobal=9, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=9, myglobal=10, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=10, myglobal=10, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=10, myglobal=10, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=10, myglobal=11, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=11, myglobal=11, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=11, myglobal=11, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=11, myglobal=12, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=12, myglobal=12, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=12, myglobal=12, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=12, myglobal=13, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=13, myglobal=13, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=13, myglobal=13, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=13, myglobal=14, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=14, myglobal=14, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=14, myglobal=14, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=14, myglobal=15, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=15, myglobal=15, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=15, myglobal=15, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=15, myglobal=16, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=16, myglobal=16, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=16, myglobal=16, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=16, myglobal=17, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=17, myglobal=17, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=17, myglobal=17, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=17, myglobal=18, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=18, myglobal=18, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=18, myglobal=18, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=18, myglobal=19, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=19, myglobal=19, mythread=-1] [L1352] COND TRUE 0 i<20 VAL [\old(arg)={0:0}, i=19, myglobal=19, mythread=-1] [L1355] 0 myglobal=myglobal+1 VAL [\old(arg)={0:0}, i=19, myglobal=20, mythread=-1] [L1352] 0 i++ VAL [\old(arg)={0:0}, i=20, myglobal=20, mythread=-1] [L1324] 1 int i,j; [L1325] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, i=0, myglobal=20] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=0, myglobal=20] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=0, j=20, myglobal=20] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=0, j=21, myglobal=21] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=1, j=21, myglobal=21] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=1, j=21, myglobal=21] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=1, j=21, myglobal=21] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=1, j=22, myglobal=22] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=2, j=22, myglobal=22] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=2, j=22, myglobal=22] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=2, j=22, myglobal=22] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=2, j=23, myglobal=23] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=23, myglobal=23] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=23, myglobal=23] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=23, myglobal=23] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=24, myglobal=24] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=4, j=24, myglobal=24] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=4, j=24, myglobal=24] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=4, j=24, myglobal=24] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=4, j=25, myglobal=25] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=5, j=25, myglobal=25] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=5, j=25, myglobal=25] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=5, j=25, myglobal=25] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=5, j=26, myglobal=26] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=6, j=26, myglobal=26] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=6, j=26, myglobal=26] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=6, j=26, myglobal=26] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=6, j=27, myglobal=27] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=7, j=27, myglobal=27] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=7, j=27, myglobal=27] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=7, j=27, myglobal=27] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=7, j=28, myglobal=28] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=8, j=28, myglobal=28] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=8, j=28, myglobal=28] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=8, j=28, myglobal=28] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=8, j=29, myglobal=29] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=9, j=29, myglobal=29] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=9, j=29, myglobal=29] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=9, j=29, myglobal=29] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=9, j=30, myglobal=30] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=10, j=30, myglobal=30] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=10, j=30, myglobal=30] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=10, j=30, myglobal=30] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=10, j=31, myglobal=31] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=11, j=31, myglobal=31] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=11, j=31, myglobal=31] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=11, j=31, myglobal=31] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=11, j=32, myglobal=32] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=12, j=32, myglobal=32] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=12, j=32, myglobal=32] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=12, j=32, myglobal=32] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=12, j=33, myglobal=33] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=13, j=33, myglobal=33] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=13, j=33, myglobal=33] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=13, j=33, myglobal=33] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=13, j=34, myglobal=34] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=14, j=34, myglobal=34] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=14, j=34, myglobal=34] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=14, j=34, myglobal=34] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=14, j=35, myglobal=35] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=15, j=35, myglobal=35] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=15, j=35, myglobal=35] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=15, j=35, myglobal=35] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=15, j=36, myglobal=36] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=16, j=36, myglobal=36] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=16, j=36, myglobal=36] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=16, j=36, myglobal=36] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=16, j=37, myglobal=37] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=17, j=37, myglobal=37] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=17, j=37, myglobal=37] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=17, j=37, myglobal=37] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=17, j=38, myglobal=38] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=18, j=38, myglobal=38] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=18, j=38, myglobal=38] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=18, j=38, myglobal=38] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=18, j=39, myglobal=39] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=19, j=39, myglobal=39] [L1325] COND TRUE 1 i<20 VAL [\old(arg)={0:0}, arg={0:0}, i=19, j=39, myglobal=39] [L1328] 1 j=myglobal VAL [\old(arg)={0:0}, arg={0:0}, i=19, j=39, myglobal=39] [L1330] 1 j=j+1 [L1333] 1 myglobal=j VAL [\old(arg)={0:0}, arg={0:0}, i=19, j=40, myglobal=40] [L1325] 1 i++ VAL [\old(arg)={0:0}, arg={0:0}, i=20, j=40, myglobal=40] [L1352] COND FALSE 0 !(i<20) VAL [\old(arg)={0:0}, arg={0:0}, i=20, i=20, j=40, myglobal=40, mythread=-1] [L1325] COND FALSE 1 !(i<20) [L1336] 1 return ((void *)0); [L1358] FCALL, JOIN 1 pthread_join ( mythread, ((void *)0) ) VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, i=20, i=20, j=40, myglobal=40, mythread=-1] [L1358] COND FALSE 0 !(pthread_join ( mythread, ((void *)0) )) [L1362] CALL 0 __VERIFIER_assert(myglobal != 40) [L13] COND TRUE 0 !(cond) VAL [\old(arg)={0:0}, \old(cond)=0, \result={0:0}, arg={0:0}, cond=0, i=20, j=40, myglobal=40] [L13] 0 reach_error() VAL [\old(arg)={0:0}, \old(cond)=0, \result={0:0}, arg={0:0}, cond=0, i=20, j=40, myglobal=40] - UnprovableResult [Line: 1342]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 28 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.6s, OverallIterations: 9, TraceHistogramMax: 20, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 12.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1155 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1142 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 993 IncrementalHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 1 mSDtfsCounter, 993 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1172 GetRequests, 991 SyntacticMatches, 14 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2521 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6298occurred in iteration=8, InterpolantAutomatonStates: 179, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 1161 NumberOfCodeBlocks, 1118 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 1454 ConstructedInterpolants, 0 QuantifiedInterpolants, 3264 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1288 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 6467/8689 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-10-31 22:19:05,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b9f1e9-7b35-4848-98fa-3a4c74ba97d7/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE