./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/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_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a79fe9fcfc95192d454ac05616e4d9a71dbf2bcc8b4fd9d21dcef47910a50542 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:11:14,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:11:14,121 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:11:14,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:11:14,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:11:14,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:11:14,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:11:14,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:11:14,173 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:11:14,175 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:11:14,175 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:11:14,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:11:14,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:11:14,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:11:14,177 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:11:14,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:11:14,179 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:11:14,179 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:11:14,180 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:11:14,180 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:11:14,180 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:11:14,181 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:11:14,181 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:11:14,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:11:14,182 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:11:14,183 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:11:14,183 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:11:14,183 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:11:14,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:11:14,184 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:11:14,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:11:14,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:11:14,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:11:14,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:11:14,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:14,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:11:14,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:11:14,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:11:14,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:11:14,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:11:14,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:11:14,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:11:14,189 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:11:14,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:11:14,190 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_ef84aecc-1fbf-493a-b351-1e2724db3613/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a79fe9fcfc95192d454ac05616e4d9a71dbf2bcc8b4fd9d21dcef47910a50542 [2024-10-31 22:11:14,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:11:14,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:11:14,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:11:14,553 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:11:14,553 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:11:14,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c Unable to find full path for "g++" [2024-10-31 22:11:16,607 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:11:16,819 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:11:16,819 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2024-10-31 22:11:16,831 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/data/7dea88c93/cc85430794694e83a22410bb3e4186a5/FLAG8e61d2ee9 [2024-10-31 22:11:16,846 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/data/7dea88c93/cc85430794694e83a22410bb3e4186a5 [2024-10-31 22:11:16,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:11:16,851 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:11:16,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:16,853 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:11:16,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:11:16,860 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:16" (1/1) ... [2024-10-31 22:11:16,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43974c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:16, skipping insertion in model container [2024-10-31 22:11:16,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:16" (1/1) ... [2024-10-31 22:11:16,894 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:11:17,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:17,156 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:11:17,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:17,214 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:11:17,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17 WrapperNode [2024-10-31 22:11:17,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:17,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:17,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:11:17,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:11:17,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (1/1) ... [2024-10-31 22:11:17,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (1/1) ... [2024-10-31 22:11:17,285 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 355 [2024-10-31 22:11:17,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:17,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:11:17,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:11:17,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:11:17,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (1/1) ... [2024-10-31 22:11:17,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (1/1) ... [2024-10-31 22:11:17,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (1/1) ... [2024-10-31 22:11:17,331 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-31 22:11:17,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (1/1) ... [2024-10-31 22:11:17,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (1/1) ... [2024-10-31 22:11:17,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (1/1) ... [2024-10-31 22:11:17,353 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (1/1) ... [2024-10-31 22:11:17,359 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (1/1) ... [2024-10-31 22:11:17,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (1/1) ... [2024-10-31 22:11:17,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:11:17,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:11:17,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:11:17,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:11:17,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (1/1) ... [2024-10-31 22:11:17,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:17,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:17,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:17,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:11:17,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:11:17,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:11:17,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:11:17,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:11:17,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:11:17,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:11:17,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:11:17,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-31 22:11:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-31 22:11:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:11:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:11:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:11:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:11:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:11:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:11:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:11:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:11:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:11:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:11:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:11:17,519 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 22:11:17,718 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:11:17,721 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:11:18,392 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:11:18,392 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:11:19,235 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:11:19,235 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-31 22:11:19,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:19 BoogieIcfgContainer [2024-10-31 22:11:19,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:11:19,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:11:19,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:11:19,249 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:11:19,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:11:16" (1/3) ... [2024-10-31 22:11:19,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256e15e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:11:19, skipping insertion in model container [2024-10-31 22:11:19,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:17" (2/3) ... [2024-10-31 22:11:19,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256e15e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:11:19, skipping insertion in model container [2024-10-31 22:11:19,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:19" (3/3) ... [2024-10-31 22:11:19,252 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2024-10-31 22:11:19,300 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:11:19,300 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-10-31 22:11:19,300 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:11:19,481 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-31 22:11:19,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 188 flow [2024-10-31 22:11:19,586 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2024-10-31 22:11:19,586 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:11:19,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 76 events. 6/76 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 252 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-10-31 22:11:19,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 80 transitions, 188 flow [2024-10-31 22:11:19,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 74 transitions, 169 flow [2024-10-31 22:11:19,613 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:11:19,622 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;@4984478e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:11:19,626 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-10-31 22:11:19,630 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:11:19,630 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:11:19,631 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:11:19,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:19,632 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:11:19,632 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-31 22:11:19,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:19,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1087518, now seen corresponding path program 1 times [2024-10-31 22:11:19,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:19,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923283909] [2024-10-31 22:11:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:19,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:20,039 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 22:11:20,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:20,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923283909] [2024-10-31 22:11:20,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923283909] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:20,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:20,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:20,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053884217] [2024-10-31 22:11:20,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:20,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:11:20,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:20,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:11:20,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:11:20,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 80 [2024-10-31 22:11:20,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 22:11:20,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:20,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 80 [2024-10-31 22:11:20,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:27,513 INFO L124 PetriNetUnfolderBase]: 22241/31179 cut-off events. [2024-10-31 22:11:27,513 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2024-10-31 22:11:27,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62066 conditions, 31179 events. 22241/31179 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 4435. Compared 253372 event pairs, 21798 based on Foata normal form. 2/13069 useless extension candidates. Maximal degree in co-relation 57340. Up to 29415 conditions per place. [2024-10-31 22:11:27,853 INFO L140 encePairwiseOnDemand]: 61/80 looper letters, 47 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-10-31 22:11:27,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 273 flow [2024-10-31 22:11:27,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:11:27,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:11:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-10-31 22:11:27,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-10-31 22:11:27,871 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 169 flow. Second operand 4 states and 154 transitions. [2024-10-31 22:11:27,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 273 flow [2024-10-31 22:11:28,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 260 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-31 22:11:28,672 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 200 flow [2024-10-31 22:11:28,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-10-31 22:11:28,678 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2024-10-31 22:11:28,679 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 200 flow [2024-10-31 22:11:28,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 22:11:28,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:28,680 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:11:28,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:11:28,681 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-31 22:11:28,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:28,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1960377126, now seen corresponding path program 1 times [2024-10-31 22:11:28,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:28,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997325234] [2024-10-31 22:11:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:28,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:28,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:28,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997325234] [2024-10-31 22:11:28,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997325234] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:28,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965154912] [2024-10-31 22:11:28,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:28,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:28,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:28,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:11:28,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:11:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:29,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:11:29,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:29,085 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:11:29,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965154912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:29,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:11:29,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:11:29,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764404029] [2024-10-31 22:11:29,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:29,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:29,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:29,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:29,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:11:29,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 80 [2024-10-31 22:11:29,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 22:11:29,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:29,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 80 [2024-10-31 22:11:29,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:34,973 INFO L124 PetriNetUnfolderBase]: 22241/31177 cut-off events. [2024-10-31 22:11:34,973 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-31 22:11:35,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61444 conditions, 31177 events. 22241/31177 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 4435. Compared 252912 event pairs, 21798 based on Foata normal form. 2/13070 useless extension candidates. Maximal degree in co-relation 61394. Up to 29405 conditions per place. [2024-10-31 22:11:35,157 INFO L140 encePairwiseOnDemand]: 71/80 looper letters, 40 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-10-31 22:11:35,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 296 flow [2024-10-31 22:11:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:11:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:11:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-10-31 22:11:35,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-10-31 22:11:35,163 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 200 flow. Second operand 6 states and 186 transitions. [2024-10-31 22:11:35,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 296 flow [2024-10-31 22:11:35,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:11:35,167 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 216 flow [2024-10-31 22:11:35,168 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2024-10-31 22:11:35,170 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2024-10-31 22:11:35,170 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 216 flow [2024-10-31 22:11:35,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 22:11:35,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:35,171 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:11:35,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:11:35,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:35,373 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-31 22:11:35,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash -642147641, now seen corresponding path program 1 times [2024-10-31 22:11:35,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:35,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863065197] [2024-10-31 22:11:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:35,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:35,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:35,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863065197] [2024-10-31 22:11:35,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863065197] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:35,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314111437] [2024-10-31 22:11:35,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:35,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:35,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:35,521 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:11:35,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:11:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:35,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:11:35,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:35,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:11:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:35,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314111437] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:11:35,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:11:35,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:11:35,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340337929] [2024-10-31 22:11:35,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:11:35,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:11:35,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:35,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:11:35,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:11:35,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 80 [2024-10-31 22:11:35,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 22:11:35,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:35,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 80 [2024-10-31 22:11:35,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:41,043 INFO L124 PetriNetUnfolderBase]: 22247/31201 cut-off events. [2024-10-31 22:11:41,043 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-10-31 22:11:41,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61538 conditions, 31201 events. 22247/31201 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 4435. Compared 253293 event pairs, 21798 based on Foata normal form. 6/13097 useless extension candidates. Maximal degree in co-relation 61396. Up to 29416 conditions per place. [2024-10-31 22:11:41,305 INFO L140 encePairwiseOnDemand]: 71/80 looper letters, 45 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2024-10-31 22:11:41,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 470 flow [2024-10-31 22:11:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:11:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:11:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 296 transitions. [2024-10-31 22:11:41,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-10-31 22:11:41,309 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 216 flow. Second operand 10 states and 296 transitions. [2024-10-31 22:11:41,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 470 flow [2024-10-31 22:11:41,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 412 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-31 22:11:41,314 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 356 flow [2024-10-31 22:11:41,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-10-31 22:11:41,318 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2024-10-31 22:11:41,318 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 356 flow [2024-10-31 22:11:41,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 22:11:41,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:41,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:41,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:11:41,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84aecc-1fbf-493a-b351-1e2724db3613/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:41,520 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-31 22:11:41,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:41,521 INFO L85 PathProgramCache]: Analyzing trace with hash 832377452, now seen corresponding path program 1 times [2024-10-31 22:11:41,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:41,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790704206] [2024-10-31 22:11:41,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:41,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:41,602 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 22:11:41,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:41,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790704206] [2024-10-31 22:11:41,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790704206] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:41,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:41,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:11:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121005853] [2024-10-31 22:11:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:41,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:41,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 80 [2024-10-31 22:11:41,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 22:11:41,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:41,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 80 [2024-10-31 22:11:41,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand