./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 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_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX --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 fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:45:01,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:45:02,011 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 17:45:02,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:45:02,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:45:02,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:45:02,071 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:45:02,071 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:45:02,072 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:45:02,073 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:45:02,073 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:45:02,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:45:02,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:45:02,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:45:02,076 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:45:02,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:45:02,077 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:45:02,077 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:45:02,078 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:45:02,078 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:45:02,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:45:02,079 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:45:02,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:45:02,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:45:02,081 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:45:02,081 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 17:45:02,082 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:45:02,082 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:45:02,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:45:02,083 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:45:02,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:45:02,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:45:02,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:45:02,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:45:02,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:45:02,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:45:02,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:45:02,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:45:02,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:45:02,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:45:02,088 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:45:02,088 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:45:02,088 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:45:02,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:45:02,089 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_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 [2024-11-08 17:45:02,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:45:02,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:45:02,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:45:02,418 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:45:02,418 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:45:02,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c Unable to find full path for "g++" [2024-11-08 17:45:04,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:45:04,917 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:45:04,917 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c [2024-11-08 17:45:04,930 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/data/f9cd565c5/a1bb55cb997044528b0e9c9ce0095c65/FLAGab2adc24f [2024-11-08 17:45:04,947 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/data/f9cd565c5/a1bb55cb997044528b0e9c9ce0095c65 [2024-11-08 17:45:04,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:45:04,954 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:45:04,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:45:04,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:45:04,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:45:04,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:45:04" (1/1) ... [2024-11-08 17:45:04,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b12d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:04, skipping insertion in model container [2024-11-08 17:45:04,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:45:04" (1/1) ... [2024-11-08 17:45:05,000 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:45:05,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:45:05,289 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:45:05,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:45:05,361 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:45:05,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05 WrapperNode [2024-11-08 17:45:05,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:45:05,363 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:45:05,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:45:05,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:45:05,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (1/1) ... [2024-11-08 17:45:05,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (1/1) ... [2024-11-08 17:45:05,419 INFO L138 Inliner]: procedures = 25, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 353 [2024-11-08 17:45:05,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:45:05,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:45:05,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:45:05,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:45:05,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (1/1) ... [2024-11-08 17:45:05,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (1/1) ... [2024-11-08 17:45:05,441 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (1/1) ... [2024-11-08 17:45:05,466 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]. [2024-11-08 17:45:05,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (1/1) ... [2024-11-08 17:45:05,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (1/1) ... [2024-11-08 17:45:05,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (1/1) ... [2024-11-08 17:45:05,489 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (1/1) ... [2024-11-08 17:45:05,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (1/1) ... [2024-11-08 17:45:05,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (1/1) ... [2024-11-08 17:45:05,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:45:05,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:45:05,500 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:45:05,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:45:05,501 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (1/1) ... [2024-11-08 17:45:05,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:45:05,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:05,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:45:05,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:45:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:45:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:45:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:45:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:45:05,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:45:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:45:05,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:45:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 17:45:05,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 17:45:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:45:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:45:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:45:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:45:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:45:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:45:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:45:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:45:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:45:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:45:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:45:05,597 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:45:05,747 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:45:05,749 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:45:06,593 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:45:06,593 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:45:07,394 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:45:07,394 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:45:07,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:45:07 BoogieIcfgContainer [2024-11-08 17:45:07,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:45:07,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:45:07,398 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:45:07,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:45:07,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:45:04" (1/3) ... [2024-11-08 17:45:07,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c589a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:45:07, skipping insertion in model container [2024-11-08 17:45:07,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:05" (2/3) ... [2024-11-08 17:45:07,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c589a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:45:07, skipping insertion in model container [2024-11-08 17:45:07,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:45:07" (3/3) ... [2024-11-08 17:45:07,405 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt3.wvr.c [2024-11-08 17:45:07,428 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:45:07,428 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-08 17:45:07,428 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:45:07,654 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 17:45:07,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 100 transitions, 228 flow [2024-11-08 17:45:07,795 INFO L124 PetriNetUnfolderBase]: 12/96 cut-off events. [2024-11-08 17:45:07,796 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 17:45:07,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 96 events. 12/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 318 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2024-11-08 17:45:07,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 100 transitions, 228 flow [2024-11-08 17:45:07,809 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 94 transitions, 209 flow [2024-11-08 17:45:07,826 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:45:07,835 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;@4ee00979, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:45:07,836 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-08 17:45:07,845 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:45:07,845 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-08 17:45:07,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:45:07,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:45:07,846 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:45:07,847 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 17:45:07,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:07,855 INFO L85 PathProgramCache]: Analyzing trace with hash 33764397, now seen corresponding path program 1 times [2024-11-08 17:45:07,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:07,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260083211] [2024-11-08 17:45:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:07,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:08,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:08,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260083211] [2024-11-08 17:45:08,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260083211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:08,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:45:08,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:45:08,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896664081] [2024-11-08 17:45:08,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:08,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:45:08,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:08,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:45:08,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:45:08,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 100 [2024-11-08 17:45:08,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2024-11-08 17:45:08,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:45:08,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 100 [2024-11-08 17:45:08,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:45:21,838 INFO L124 PetriNetUnfolderBase]: 52076/73066 cut-off events. [2024-11-08 17:45:21,839 INFO L125 PetriNetUnfolderBase]: For 1504/1504 co-relation queries the response was YES. [2024-11-08 17:45:22,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137355 conditions, 73066 events. 52076/73066 cut-off events. For 1504/1504 co-relation queries the response was YES. Maximal size of possible extension queue 7439. Compared 591120 event pairs, 36482 based on Foata normal form. 2/29092 useless extension candidates. Maximal degree in co-relation 130761. Up to 62109 conditions per place. [2024-11-08 17:45:22,552 INFO L140 encePairwiseOnDemand]: 83/100 looper letters, 51 selfloop transitions, 7 changer transitions 0/94 dead transitions. [2024-11-08 17:45:22,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 94 transitions, 325 flow [2024-11-08 17:45:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:45:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:45:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2024-11-08 17:45:22,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-08 17:45:22,574 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 209 flow. Second operand 4 states and 228 transitions. [2024-11-08 17:45:22,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 94 transitions, 325 flow [2024-11-08 17:45:23,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 94 transitions, 312 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-08 17:45:23,479 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 244 flow [2024-11-08 17:45:23,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2024-11-08 17:45:23,489 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, -7 predicate places. [2024-11-08 17:45:23,490 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 244 flow [2024-11-08 17:45:23,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2024-11-08 17:45:23,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:45:23,491 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 17:45:23,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:45:23,491 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 17:45:23,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:23,492 INFO L85 PathProgramCache]: Analyzing trace with hash 702068914, now seen corresponding path program 1 times [2024-11-08 17:45:23,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:23,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107895372] [2024-11-08 17:45:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:23,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:23,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:23,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107895372] [2024-11-08 17:45:23,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107895372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:45:23,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341577739] [2024-11-08 17:45:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:23,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:23,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:23,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:45:23,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:45:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:23,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:45:23,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:24,049 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:45:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341577739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:24,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:45:24,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 17:45:24,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025850322] [2024-11-08 17:45:24,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:24,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:45:24,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:24,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:45:24,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:45:24,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 100 [2024-11-08 17:45:24,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 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) [2024-11-08 17:45:24,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:45:24,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 100 [2024-11-08 17:45:24,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:45:34,916 INFO L124 PetriNetUnfolderBase]: 52076/73064 cut-off events. [2024-11-08 17:45:34,916 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-11-08 17:45:35,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136571 conditions, 73064 events. 52076/73064 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 7439. Compared 591681 event pairs, 36482 based on Foata normal form. 2/29090 useless extension candidates. Maximal degree in co-relation 136515. Up to 62099 conditions per place. [2024-11-08 17:45:35,662 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 44 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2024-11-08 17:45:35,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 92 transitions, 348 flow [2024-11-08 17:45:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:45:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:45:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 298 transitions. [2024-11-08 17:45:35,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49666666666666665 [2024-11-08 17:45:35,673 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 244 flow. Second operand 6 states and 298 transitions. [2024-11-08 17:45:35,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 92 transitions, 348 flow [2024-11-08 17:45:35,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:45:35,677 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 260 flow [2024-11-08 17:45:35,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2024-11-08 17:45:35,678 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, -4 predicate places. [2024-11-08 17:45:35,679 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 260 flow [2024-11-08 17:45:35,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 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) [2024-11-08 17:45:35,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:45:35,680 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 17:45:35,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:45:35,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:35,882 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 17:45:35,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash 289300990, now seen corresponding path program 1 times [2024-11-08 17:45:35,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:35,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725217845] [2024-11-08 17:45:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:35,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:36,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:36,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725217845] [2024-11-08 17:45:36,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725217845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:45:36,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805175409] [2024-11-08 17:45:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:36,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:36,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:36,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:45:36,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3991554d-c94b-4987-b13c-95b01d21531f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:45:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:36,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:45:36,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:36,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:45:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:36,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805175409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:45:36,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:45:36,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 17:45:36,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004714057] [2024-11-08 17:45:36,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:45:36,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:45:36,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:36,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:45:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:45:36,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 100 [2024-11-08 17:45:36,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 260 flow. Second operand has 12 states, 12 states have (on average 41.083333333333336) internal successors, (493), 12 states have internal predecessors, (493), 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) [2024-11-08 17:45:36,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:45:36,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 100 [2024-11-08 17:45:36,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand