./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.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_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/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_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/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_126fe704-61f6-49d9-b8f2-4dce2dceb515/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 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:18:53,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:18:54,006 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 18:18:54,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:18:54,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:18:54,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:18:54,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:18:54,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:18:54,071 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:18:54,074 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:18:54,075 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:18:54,075 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:18:54,077 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:18:54,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:18:54,080 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:18:54,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:18:54,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:18:54,082 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:18:54,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:18:54,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:18:54,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:18:54,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:18:54,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:18:54,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:18:54,090 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:18:54,090 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:18:54,091 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:18:54,091 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:18:54,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:18:54,092 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:18:54,093 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:18:54,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:18:54,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:18:54,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:18:54,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:18:54,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:18:54,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:18:54,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:18:54,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:18:54,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:18:54,098 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:18:54,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:18:54,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:18:54,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:18:54,100 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_126fe704-61f6-49d9-b8f2-4dce2dceb515/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f [2024-11-08 18:18:54,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:18:54,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:18:54,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:18:54,588 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:18:54,589 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:18:54,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c Unable to find full path for "g++" [2024-11-08 18:18:57,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:18:57,515 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:18:57,516 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2024-11-08 18:18:57,528 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/data/1e3605654/05b72bcb5e604542acd7eeef5bf026bf/FLAG9b4c178a3 [2024-11-08 18:18:57,748 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/data/1e3605654/05b72bcb5e604542acd7eeef5bf026bf [2024-11-08 18:18:57,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:18:57,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:18:57,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:18:57,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:18:57,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:18:57,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:18:57" (1/1) ... [2024-11-08 18:18:57,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ccfa20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:57, skipping insertion in model container [2024-11-08 18:18:57,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:18:57" (1/1) ... [2024-11-08 18:18:57,812 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:18:58,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:18:58,194 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:18:58,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:18:58,274 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:18:58,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58 WrapperNode [2024-11-08 18:18:58,276 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:18:58,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:18:58,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:18:58,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:18:58,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (1/1) ... [2024-11-08 18:18:58,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (1/1) ... [2024-11-08 18:18:58,354 INFO L138 Inliner]: procedures = 25, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 353 [2024-11-08 18:18:58,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:18:58,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:18:58,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:18:58,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:18:58,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (1/1) ... [2024-11-08 18:18:58,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (1/1) ... [2024-11-08 18:18:58,379 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (1/1) ... [2024-11-08 18:18:58,404 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 18:18:58,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (1/1) ... [2024-11-08 18:18:58,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (1/1) ... [2024-11-08 18:18:58,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (1/1) ... [2024-11-08 18:18:58,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (1/1) ... [2024-11-08 18:18:58,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (1/1) ... [2024-11-08 18:18:58,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (1/1) ... [2024-11-08 18:18:58,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:18:58,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:18:58,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:18:58,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:18:58,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (1/1) ... [2024-11-08 18:18:58,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:18:58,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:18:58,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:18:58,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:18:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:18:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 18:18:58,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 18:18:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 18:18:58,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 18:18:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 18:18:58,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 18:18:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 18:18:58,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 18:18:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:18:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:18:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:18:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:18:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 18:18:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 18:18:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 18:18:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:18:58,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:18:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:18:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:18:58,566 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 18:18:58,742 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:18:58,746 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:18:59,671 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:18:59,671 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:19:00,530 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:19:00,530 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:19:00,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:19:00 BoogieIcfgContainer [2024-11-08 18:19:00,531 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:19:00,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:19:00,537 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:19:00,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:19:00,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:18:57" (1/3) ... [2024-11-08 18:19:00,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a47c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:19:00, skipping insertion in model container [2024-11-08 18:19:00,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:18:58" (2/3) ... [2024-11-08 18:19:00,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a47c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:19:00, skipping insertion in model container [2024-11-08 18:19:00,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:19:00" (3/3) ... [2024-11-08 18:19:00,548 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2024-11-08 18:19:00,574 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:19:00,574 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-08 18:19:00,574 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:19:00,834 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 18:19:00,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 100 transitions, 228 flow [2024-11-08 18:19:00,992 INFO L124 PetriNetUnfolderBase]: 12/96 cut-off events. [2024-11-08 18:19:00,992 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 18:19:01,002 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 18:19:01,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 100 transitions, 228 flow [2024-11-08 18:19:01,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 94 transitions, 209 flow [2024-11-08 18:19:01,027 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:19:01,039 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;@5dfc474e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:19:01,039 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-08 18:19:01,049 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:19:01,049 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-08 18:19:01,050 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:19:01,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:01,051 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 18:19:01,051 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 18:19:01,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 33764397, now seen corresponding path program 1 times [2024-11-08 18:19:01,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:01,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152203553] [2024-11-08 18:19:01,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:01,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:01,676 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 18:19:01,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:01,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152203553] [2024-11-08 18:19:01,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152203553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:19:01,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:19:01,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:19:01,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123523855] [2024-11-08 18:19:01,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:19:01,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:19:01,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:01,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:19:01,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:19:01,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 100 [2024-11-08 18:19:01,838 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 18:19:01,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:01,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 100 [2024-11-08 18:19:01,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:14,446 INFO L124 PetriNetUnfolderBase]: 39990/57024 cut-off events. [2024-11-08 18:19:14,446 INFO L125 PetriNetUnfolderBase]: For 1386/1386 co-relation queries the response was YES. [2024-11-08 18:19:14,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106734 conditions, 57024 events. 39990/57024 cut-off events. For 1386/1386 co-relation queries the response was YES. Maximal size of possible extension queue 5739. Compared 464816 event pairs, 28674 based on Foata normal form. 2/24409 useless extension candidates. Maximal degree in co-relation 100812. Up to 47902 conditions per place. [2024-11-08 18:19:15,088 INFO L140 encePairwiseOnDemand]: 81/100 looper letters, 49 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-11-08 18:19:15,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 92 transitions, 317 flow [2024-11-08 18:19:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:19:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:19:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2024-11-08 18:19:15,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-08 18:19:15,112 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 209 flow. Second operand 4 states and 228 transitions. [2024-11-08 18:19:15,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 92 transitions, 317 flow [2024-11-08 18:19:15,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 304 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-08 18:19:15,851 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 240 flow [2024-11-08 18:19:15,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-11-08 18:19:15,860 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, -9 predicate places. [2024-11-08 18:19:15,861 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 240 flow [2024-11-08 18:19:15,863 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 18:19:15,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:15,864 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 18:19:15,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:19:15,865 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 18:19:15,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:15,866 INFO L85 PathProgramCache]: Analyzing trace with hash 702068914, now seen corresponding path program 1 times [2024-11-08 18:19:15,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:15,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894588192] [2024-11-08 18:19:15,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:15,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:16,150 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 18:19:16,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:16,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894588192] [2024-11-08 18:19:16,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894588192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:16,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263148871] [2024-11-08 18:19:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:16,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:16,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:16,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:16,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:19:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:16,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:19:16,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:16,485 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 18:19:16,486 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:19:16,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263148871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:19:16,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:19:16,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 18:19:16,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800780118] [2024-11-08 18:19:16,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:19:16,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:19:16,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:16,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:19:16,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:19:16,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 100 [2024-11-08 18:19:16,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 240 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 18:19:16,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:16,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 100 [2024-11-08 18:19:16,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:26,168 INFO L124 PetriNetUnfolderBase]: 39990/57022 cut-off events. [2024-11-08 18:19:26,168 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-11-08 18:19:26,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106032 conditions, 57022 events. 39990/57022 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 5739. Compared 465165 event pairs, 28674 based on Foata normal form. 2/24407 useless extension candidates. Maximal degree in co-relation 105976. Up to 47892 conditions per place. [2024-11-08 18:19:26,696 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 42 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-11-08 18:19:26,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 340 flow [2024-11-08 18:19:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:19:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:19:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 296 transitions. [2024-11-08 18:19:26,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-11-08 18:19:26,703 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 240 flow. Second operand 6 states and 296 transitions. [2024-11-08 18:19:26,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 340 flow [2024-11-08 18:19:26,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:19:26,711 INFO L231 Difference]: Finished difference. Result has 89 places, 90 transitions, 256 flow [2024-11-08 18:19:26,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=89, PETRI_TRANSITIONS=90} [2024-11-08 18:19:26,715 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, -6 predicate places. [2024-11-08 18:19:26,715 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 90 transitions, 256 flow [2024-11-08 18:19:26,716 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 18:19:26,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:26,718 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 18:19:26,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:19:26,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:26,924 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 18:19:26,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:26,925 INFO L85 PathProgramCache]: Analyzing trace with hash 289300990, now seen corresponding path program 1 times [2024-11-08 18:19:26,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:26,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773963] [2024-11-08 18:19:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:26,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:27,131 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 18:19:27,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773963] [2024-11-08 18:19:27,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:27,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783869528] [2024-11-08 18:19:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:27,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:27,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:27,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:27,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:19:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:27,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:19:27,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:27,358 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 18:19:27,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:19:27,434 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 18:19:27,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783869528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:19:27,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:19:27,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 18:19:27,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210603504] [2024-11-08 18:19:27,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:19:27,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:19:27,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:27,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:19:27,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:19:27,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 100 [2024-11-08 18:19:27,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 256 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 18:19:27,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:27,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 100 [2024-11-08 18:19:27,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:37,095 INFO L124 PetriNetUnfolderBase]: 40002/57064 cut-off events. [2024-11-08 18:19:37,096 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2024-11-08 18:19:37,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106144 conditions, 57064 events. 40002/57064 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 5739. Compared 465307 event pairs, 28674 based on Foata normal form. 6/24449 useless extension candidates. Maximal degree in co-relation 105978. Up to 47903 conditions per place. [2024-11-08 18:19:37,688 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 47 selfloop transitions, 25 changer transitions 0/108 dead transitions. [2024-11-08 18:19:37,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 108 transitions, 514 flow [2024-11-08 18:19:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:19:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 18:19:37,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 478 transitions. [2024-11-08 18:19:37,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.478 [2024-11-08 18:19:37,694 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 256 flow. Second operand 10 states and 478 transitions. [2024-11-08 18:19:37,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 108 transitions, 514 flow [2024-11-08 18:19:37,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 108 transitions, 456 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-08 18:19:37,701 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 396 flow [2024-11-08 18:19:37,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=396, PETRI_PLACES=96, PETRI_TRANSITIONS=108} [2024-11-08 18:19:37,703 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 1 predicate places. [2024-11-08 18:19:37,703 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 396 flow [2024-11-08 18:19:37,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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 18:19:37,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:37,704 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:37,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:19:37,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126fe704-61f6-49d9-b8f2-4dce2dceb515/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:37,909 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 18:19:37,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1132405895, now seen corresponding path program 1 times [2024-11-08 18:19:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:37,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827337322] [2024-11-08 18:19:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:37,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:38,295 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 18:19:38,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:38,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827337322] [2024-11-08 18:19:38,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827337322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:19:38,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:19:38,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:19:38,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174931047] [2024-11-08 18:19:38,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:19:38,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:19:38,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:38,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:19:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:19:38,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 100 [2024-11-08 18:19:38,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 18:19:38,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:38,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 100 [2024-11-08 18:19:38,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand