./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC --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 c01f4f7d2658db6d4a951cb25555f85a195a1e66c897cc0a3f349ba621d29da1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:55:17,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:55:17,643 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 22:55:17,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:55:17,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:55:17,690 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:55:17,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:55:17,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:55:17,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:55:17,694 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:55:17,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:55:17,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:55:17,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:55:17,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:55:17,695 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:55:17,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:55:17,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:55:17,695 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:55:17,695 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:55:17,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:55:17,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:55:17,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:55:17,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:55:17,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:55:17,696 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 22:55:17,696 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 22:55:17,696 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:55:17,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:55:17,698 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:55:17,698 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:55:17,698 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:55:17,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:55:17,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:55:17,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:55:17,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:55:17,700 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:55:17,700 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:55:17,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:55:17,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:55:17,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:55:17,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:55:17,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:55:17,701 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:55:17,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:55:17,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:55:17,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:55:17,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:55:17,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:55:17,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:55:17,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:55:17,701 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC 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 -> c01f4f7d2658db6d4a951cb25555f85a195a1e66c897cc0a3f349ba621d29da1 [2024-11-23 22:55:17,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:55:18,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:55:18,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:55:18,010 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:55:18,011 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:55:18,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-11-23 22:55:21,066 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/data/623c5acdd/dea79fa0cef8433eb447a555c7c18f63/FLAG2f527b53e [2024-11-23 22:55:21,425 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:55:21,427 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-11-23 22:55:21,442 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/data/623c5acdd/dea79fa0cef8433eb447a555c7c18f63/FLAG2f527b53e [2024-11-23 22:55:21,662 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/data/623c5acdd/dea79fa0cef8433eb447a555c7c18f63 [2024-11-23 22:55:21,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:55:21,675 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:55:21,677 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:55:21,679 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:55:21,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:55:21,692 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:55:21" (1/1) ... [2024-11-23 22:55:21,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58aab856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:21, skipping insertion in model container [2024-11-23 22:55:21,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:55:21" (1/1) ... [2024-11-23 22:55:21,748 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:55:22,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:55:22,060 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:55:22,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:55:22,147 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:55:22,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22 WrapperNode [2024-11-23 22:55:22,149 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:55:22,150 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:55:22,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:55:22,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:55:22,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,173 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,214 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 160 [2024-11-23 22:55:22,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:55:22,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:55:22,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:55:22,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:55:22,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,232 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,266 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-23 22:55:22,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,284 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:55:22,312 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:55:22,312 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:55:22,312 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:55:22,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (1/1) ... [2024-11-23 22:55:22,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:55:22,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:55:22,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:55:22,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:55:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:55:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 22:55:22,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 22:55:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 22:55:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 22:55:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 22:55:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 22:55:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-23 22:55:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-23 22:55:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:55:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:55:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-23 22:55:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-23 22:55:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 22:55:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 22:55:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 22:55:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:55:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:55:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 22:55:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 22:55:22,393 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 22:55:22,558 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:55:22,560 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:55:23,102 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 22:55:23,102 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:55:23,432 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:55:23,433 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-23 22:55:23,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:55:23 BoogieIcfgContainer [2024-11-23 22:55:23,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:55:23,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:55:23,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:55:23,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:55:23,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:55:21" (1/3) ... [2024-11-23 22:55:23,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337aeade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:55:23, skipping insertion in model container [2024-11-23 22:55:23,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:22" (2/3) ... [2024-11-23 22:55:23,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337aeade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:55:23, skipping insertion in model container [2024-11-23 22:55:23,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:55:23" (3/3) ... [2024-11-23 22:55:23,446 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-11-23 22:55:23,466 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:55:23,468 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-min-max-inc-dec.wvr.c that has 6 procedures, 94 locations, 1 initial locations, 5 loop locations, and 16 error locations. [2024-11-23 22:55:23,469 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 22:55:23,603 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-11-23 22:55:23,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 101 transitions, 237 flow [2024-11-23 22:55:23,729 INFO L124 PetriNetUnfolderBase]: 8/96 cut-off events. [2024-11-23 22:55:23,731 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-23 22:55:23,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 96 events. 8/96 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 328 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2024-11-23 22:55:23,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 101 transitions, 237 flow [2024-11-23 22:55:23,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 94 transitions, 215 flow [2024-11-23 22:55:23,755 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:55:23,766 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;@57c5f526, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:55:23,767 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-11-23 22:55:23,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 22:55:23,772 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-23 22:55:23,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 22:55:23,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:55:23,773 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 22:55:23,773 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-23 22:55:23,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:23,779 INFO L85 PathProgramCache]: Analyzing trace with hash 592575891, now seen corresponding path program 1 times [2024-11-23 22:55:23,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:23,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758179511] [2024-11-23 22:55:23,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:23,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:24,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:24,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758179511] [2024-11-23 22:55:24,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758179511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:24,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:24,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:55:24,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559292820] [2024-11-23 22:55:24,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:24,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:55:24,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:24,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:55:24,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:55:24,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 101 [2024-11-23 22:55:24,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2024-11-23 22:55:24,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:55:24,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 101 [2024-11-23 22:55:24,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:55:48,506 INFO L124 PetriNetUnfolderBase]: 194231/284536 cut-off events. [2024-11-23 22:55:48,506 INFO L125 PetriNetUnfolderBase]: For 10798/10798 co-relation queries the response was YES. [2024-11-23 22:55:49,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528607 conditions, 284536 events. 194231/284536 cut-off events. For 10798/10798 co-relation queries the response was YES. Maximal size of possible extension queue 11510. Compared 2566936 event pairs, 149628 based on Foata normal form. 1/237799 useless extension candidates. Maximal degree in co-relation 500045. Up to 232625 conditions per place. [2024-11-23 22:55:50,873 INFO L140 encePairwiseOnDemand]: 95/101 looper letters, 53 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2024-11-23 22:55:50,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 97 transitions, 335 flow [2024-11-23 22:55:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:55:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:55:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-23 22:55:50,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5915841584158416 [2024-11-23 22:55:50,891 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 215 flow. Second operand 4 states and 239 transitions. [2024-11-23 22:55:50,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 97 transitions, 335 flow [2024-11-23 22:55:52,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 318 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-23 22:55:52,243 INFO L231 Difference]: Finished difference. Result has 98 places, 97 transitions, 227 flow [2024-11-23 22:55:52,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=98, PETRI_TRANSITIONS=97} [2024-11-23 22:55:52,252 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, -4 predicate places. [2024-11-23 22:55:52,253 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 97 transitions, 227 flow [2024-11-23 22:55:52,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2024-11-23 22:55:52,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:55:52,255 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-23 22:55:52,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:55:52,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-23 22:55:52,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:52,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1113409020, now seen corresponding path program 1 times [2024-11-23 22:55:52,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:52,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388828209] [2024-11-23 22:55:52,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:52,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388828209] [2024-11-23 22:55:52,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388828209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:55:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299951542] [2024-11-23 22:55:52,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:52,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:55:52,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:55:52,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:55:52,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1294091-7646-4792-98ec-cf1952caa33e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:55:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:52,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 22:55:52,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:55:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:52,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:55:52,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299951542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:52,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:55:52,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 22:55:52,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285198675] [2024-11-23 22:55:52,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:52,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:55:52,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:52,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:55:52,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:55:52,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 101 [2024-11-23 22:55:52,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 97 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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) [2024-11-23 22:55:52,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:55:52,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 101 [2024-11-23 22:55:52,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand