./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_12-arraycollapse_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_12-arraycollapse_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx --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 034172cc4904075fab6f792587170b7236be9fb41f3a62fa7fbe9a216ec4ca2c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:12:58,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:12:58,783 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 22:12:58,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:12:58,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:12:58,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:12:58,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:12:58,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:12:58,825 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:12:58,826 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:12:58,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:12:58,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:12:58,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:12:58,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:12:58,829 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:12:58,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:12:58,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:12:58,830 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:12:58,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:12:58,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:12:58,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:12:58,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:12:58,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:12:58,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:12:58,834 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:12:58,834 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:12:58,835 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:12:58,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:12:58,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:12:58,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:12:58,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:12:58,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:12:58,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:12:58,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:58,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:12:58,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:12:58,840 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:12:58,840 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:12:58,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:12:58,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:12:58,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:12:58,842 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:12:58,843 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:12:58,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:12:58,843 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_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 034172cc4904075fab6f792587170b7236be9fb41f3a62fa7fbe9a216ec4ca2c [2023-11-21 22:12:59,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:12:59,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:12:59,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:12:59,158 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:12:59,159 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:12:59,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/09-regions_12-arraycollapse_rc.i [2023-11-21 22:13:02,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:13:02,654 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:13:02,654 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/sv-benchmarks/c/goblint-regression/09-regions_12-arraycollapse_rc.i [2023-11-21 22:13:02,678 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/data/3cb1650b4/2cb92a73e0354d16a1ae3c1eceff2a15/FLAG7098e7085 [2023-11-21 22:13:02,701 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/data/3cb1650b4/2cb92a73e0354d16a1ae3c1eceff2a15 [2023-11-21 22:13:02,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:13:02,715 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:13:02,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:02,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:13:02,727 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:13:02,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58bd975e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02, skipping insertion in model container [2023-11-21 22:13:02,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,811 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:13:03,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:03,562 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:13:03,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:03,756 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:13:03,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03 WrapperNode [2023-11-21 22:13:03,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:03,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:03,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:13:03,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:13:03,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (1/1) ... [2023-11-21 22:13:03,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (1/1) ... [2023-11-21 22:13:03,881 INFO L138 Inliner]: procedures = 371, calls = 38, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 165 [2023-11-21 22:13:03,882 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:03,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:13:03,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:13:03,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:13:03,897 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (1/1) ... [2023-11-21 22:13:03,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (1/1) ... [2023-11-21 22:13:03,916 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (1/1) ... [2023-11-21 22:13:03,956 INFO L187 HeapSplitter]: Split 29 memory accesses to 4 slices as follows [0, 6, 22, 1] [2023-11-21 22:13:03,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (1/1) ... [2023-11-21 22:13:03,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (1/1) ... [2023-11-21 22:13:03,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (1/1) ... [2023-11-21 22:13:03,994 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (1/1) ... [2023-11-21 22:13:04,002 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (1/1) ... [2023-11-21 22:13:04,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (1/1) ... [2023-11-21 22:13:04,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:13:04,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:13:04,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:13:04,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:13:04,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (1/1) ... [2023-11-21 22:13:04,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:04,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:04,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:13:04,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:13:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:13:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 22:13:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 22:13:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-21 22:13:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-21 22:13:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:13:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:13:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:13:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:13:04,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:13:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 22:13:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:13:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:13:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:13:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:13:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:13:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:13:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:13:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 22:13:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 22:13:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-21 22:13:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-21 22:13:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 22:13:04,116 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 22:13:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:13:04,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:13:04,119 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:13:04,335 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:13:04,338 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:13:04,872 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:13:05,461 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:13:05,462 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:13:05,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:05 BoogieIcfgContainer [2023-11-21 22:13:05,464 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:13:05,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:13:05,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:13:05,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:13:05,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:13:02" (1/3) ... [2023-11-21 22:13:05,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7151be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:05, skipping insertion in model container [2023-11-21 22:13:05,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:03" (2/3) ... [2023-11-21 22:13:05,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7151be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:05, skipping insertion in model container [2023-11-21 22:13:05,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:05" (3/3) ... [2023-11-21 22:13:05,472 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_12-arraycollapse_rc.i [2023-11-21 22:13:05,481 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:13:05,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:13:05,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 22:13:05,492 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:13:05,532 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:13:05,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 19 transitions, 42 flow [2023-11-21 22:13:05,592 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2023-11-21 22:13:05,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:13:05,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 18 events. 1/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2023-11-21 22:13:05,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 19 transitions, 42 flow [2023-11-21 22:13:05,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 6 places, 6 transitions, 12 flow [2023-11-21 22:13:05,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:13:05,617 INFO L357 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, mHoare=true, 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;@3290a0c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:13:05,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-21 22:13:05,622 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:13:05,622 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:13:05,623 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:13:05,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:05,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:13:05,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-21 22:13:05,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:05,630 INFO L85 PathProgramCache]: Analyzing trace with hash 472720, now seen corresponding path program 1 times [2023-11-21 22:13:05,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:05,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954518180] [2023-11-21 22:13:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:05,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:06,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:06,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954518180] [2023-11-21 22:13:06,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954518180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:06,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:06,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:06,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832406352] [2023-11-21 22:13:06,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:06,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:13:06,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:13:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:13:06,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2023-11-21 22:13:06,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 6 places, 6 transitions, 12 flow. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-21 22:13:06,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:06,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2023-11-21 22:13:06,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:06,195 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-11-21 22:13:06,195 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:13:06,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11 conditions, 5 events. 1/5 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/5 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-21 22:13:06,197 INFO L140 encePairwiseOnDemand]: 15/19 looper letters, 1 selfloop transitions, 3 changer transitions 0/5 dead transitions. [2023-11-21 22:13:06,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 8 places, 5 transitions, 18 flow [2023-11-21 22:13:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:13:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:13:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2023-11-21 22:13:06,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17105263157894737 [2023-11-21 22:13:06,212 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 13 transitions. [2023-11-21 22:13:06,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 13 transitions. [2023-11-21 22:13:06,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:06,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 13 transitions. [2023-11-21 22:13:06,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-21 22:13:06,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2023-11-21 22:13:06,222 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2023-11-21 22:13:06,224 INFO L175 Difference]: Start difference. First operand has 6 places, 6 transitions, 12 flow. Second operand 4 states and 13 transitions. [2023-11-21 22:13:06,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 8 places, 5 transitions, 18 flow [2023-11-21 22:13:06,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 8 places, 5 transitions, 18 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:13:06,227 INFO L231 Difference]: Finished difference. Result has 8 places, 5 transitions, 16 flow [2023-11-21 22:13:06,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=10, PETRI_DIFFERENCE_MINUEND_PLACES=5, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=16, PETRI_PLACES=8, PETRI_TRANSITIONS=5} [2023-11-21 22:13:06,233 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 2 predicate places. [2023-11-21 22:13:06,233 INFO L495 AbstractCegarLoop]: Abstraction has has 8 places, 5 transitions, 16 flow [2023-11-21 22:13:06,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-21 22:13:06,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:06,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-21 22:13:06,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:13:06,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-21 22:13:06,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:06,235 INFO L85 PathProgramCache]: Analyzing trace with hash 14654784, now seen corresponding path program 1 times [2023-11-21 22:13:06,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:06,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715729620] [2023-11-21 22:13:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:06,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:06,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:06,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715729620] [2023-11-21 22:13:06,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715729620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:06,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:06,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:06,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661030767] [2023-11-21 22:13:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:06,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:13:06,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:06,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:13:06,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:13:06,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2023-11-21 22:13:06,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 8 places, 5 transitions, 16 flow. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-21 22:13:06,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:06,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2023-11-21 22:13:06,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:06,523 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-21 22:13:06,523 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:13:06,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 8 events. 1/8 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-11-21 22:13:06,524 INFO L140 encePairwiseOnDemand]: 15/19 looper letters, 3 selfloop transitions, 3 changer transitions 0/7 dead transitions. [2023-11-21 22:13:06,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 36 flow [2023-11-21 22:13:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:13:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:13:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-11-21 22:13:06,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19736842105263158 [2023-11-21 22:13:06,531 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 15 transitions. [2023-11-21 22:13:06,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 15 transitions. [2023-11-21 22:13:06,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:06,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 15 transitions. [2023-11-21 22:13:06,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-11-21 22:13:06,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2023-11-21 22:13:06,533 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2023-11-21 22:13:06,534 INFO L175 Difference]: Start difference. First operand has 8 places, 5 transitions, 16 flow. Second operand 4 states and 15 transitions. [2023-11-21 22:13:06,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 36 flow [2023-11-21 22:13:06,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 8 places, 7 transitions, 26 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:13:06,535 INFO L231 Difference]: Finished difference. Result has 10 places, 7 transitions, 30 flow [2023-11-21 22:13:06,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=10, PETRI_DIFFERENCE_MINUEND_PLACES=5, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=30, PETRI_PLACES=10, PETRI_TRANSITIONS=7} [2023-11-21 22:13:06,539 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 4 predicate places. [2023-11-21 22:13:06,539 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 7 transitions, 30 flow [2023-11-21 22:13:06,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-21 22:13:06,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:06,540 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-21 22:13:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:13:06,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-21 22:13:06,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:06,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1505519780, now seen corresponding path program 1 times [2023-11-21 22:13:06,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:06,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027866167] [2023-11-21 22:13:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:06,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:13:06,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:06,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027866167] [2023-11-21 22:13:06,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027866167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:06,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:06,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:06,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850697037] [2023-11-21 22:13:06,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:06,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:06,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:06,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:06,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:06,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2023-11-21 22:13:06,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 7 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-21 22:13:06,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:06,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2023-11-21 22:13:06,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:06,842 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-11-21 22:13:06,843 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:13:06,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 7 events. 1/7 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 7. Up to 4 conditions per place. [2023-11-21 22:13:06,843 INFO L140 encePairwiseOnDemand]: 16/19 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-11-21 22:13:06,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 36 flow [2023-11-21 22:13:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:06,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-11-21 22:13:06,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17543859649122806 [2023-11-21 22:13:06,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 10 transitions. [2023-11-21 22:13:06,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 10 transitions. [2023-11-21 22:13:06,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:06,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 10 transitions. [2023-11-21 22:13:06,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-21 22:13:06,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2023-11-21 22:13:06,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2023-11-21 22:13:06,848 INFO L175 Difference]: Start difference. First operand has 10 places, 7 transitions, 30 flow. Second operand 3 states and 10 transitions. [2023-11-21 22:13:06,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 36 flow [2023-11-21 22:13:06,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 34 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:13:06,849 INFO L231 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2023-11-21 22:13:06,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2023-11-21 22:13:06,850 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 4 predicate places. [2023-11-21 22:13:06,850 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2023-11-21 22:13:06,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-21 22:13:06,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 3 remaining) [2023-11-21 22:13:06,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 3 remaining) [2023-11-21 22:13:06,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-21 22:13:06,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:13:06,856 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-21 22:13:06,861 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:13:06,863 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:13:06,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:13:06 BasicIcfg [2023-11-21 22:13:06,871 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:13:06,872 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:13:06,872 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:13:06,872 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:13:06,873 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:05" (3/4) ... [2023-11-21 22:13:06,875 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:13:06,879 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-21 22:13:06,894 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 118 nodes and edges [2023-11-21 22:13:06,894 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-21 22:13:06,895 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-21 22:13:07,010 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:13:07,011 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:13:07,011 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:13:07,012 INFO L158 Benchmark]: Toolchain (without parser) took 4297.03ms. Allocated memory is still 174.1MB. Free memory was 140.7MB in the beginning and 90.4MB in the end (delta: 50.2MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. [2023-11-21 22:13:07,012 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 130.0MB. Free memory is still 103.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:13:07,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1038.52ms. Allocated memory is still 174.1MB. Free memory was 140.7MB in the beginning and 100.8MB in the end (delta: 39.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-21 22:13:07,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 123.25ms. Allocated memory is still 174.1MB. Free memory was 100.8MB in the beginning and 97.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:13:07,013 INFO L158 Benchmark]: Boogie Preprocessor took 134.36ms. Allocated memory is still 174.1MB. Free memory was 97.8MB in the beginning and 94.1MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:13:07,014 INFO L158 Benchmark]: RCFGBuilder took 1445.47ms. Allocated memory is still 174.1MB. Free memory was 93.7MB in the beginning and 123.3MB in the end (delta: -29.6MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2023-11-21 22:13:07,014 INFO L158 Benchmark]: TraceAbstraction took 1405.82ms. Allocated memory is still 174.1MB. Free memory was 122.3MB in the beginning and 95.7MB in the end (delta: 26.6MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2023-11-21 22:13:07,015 INFO L158 Benchmark]: Witness Printer took 139.24ms. Allocated memory is still 174.1MB. Free memory was 95.7MB in the beginning and 90.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 22:13:07,017 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 130.0MB. Free memory is still 103.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1038.52ms. Allocated memory is still 174.1MB. Free memory was 140.7MB in the beginning and 100.8MB in the end (delta: 39.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 123.25ms. Allocated memory is still 174.1MB. Free memory was 100.8MB in the beginning and 97.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 134.36ms. Allocated memory is still 174.1MB. Free memory was 97.8MB in the beginning and 94.1MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1445.47ms. Allocated memory is still 174.1MB. Free memory was 93.7MB in the beginning and 123.3MB in the end (delta: -29.6MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1405.82ms. Allocated memory is still 174.1MB. Free memory was 122.3MB in the beginning and 95.7MB in the end (delta: 26.6MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * Witness Printer took 139.24ms. Allocated memory is still 174.1MB. Free memory was 95.7MB in the beginning and 90.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1254]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1254]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 26 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 8 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-21 22:13:07,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_351b1100-cd0d-492f-8a7e-883ed60ef623/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE