./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b4637ab5710a1ca22a981e8047278048fbbf856825d3649b2cb9d48de11d175 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:55:46,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:55:46,118 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 21:55:46,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:55:46,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:55:46,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:55:46,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:55:46,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:55:46,161 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:55:46,162 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:55:46,163 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:55:46,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:55:46,164 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:55:46,164 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:55:46,165 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:55:46,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:55:46,167 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:55:46,168 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:55:46,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:55:46,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:55:46,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:55:46,172 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:55:46,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:55:46,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:55:46,173 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:55:46,174 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 21:55:46,174 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:55:46,174 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:55:46,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:55:46,175 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:55:46,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:55:46,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:55:46,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:55:46,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:55:46,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:55:46,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:55:46,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:55:46,178 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:55:46,178 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:55:46,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:55:46,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:55:46,180 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:55:46,180 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:55:46,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:55:46,181 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_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b4637ab5710a1ca22a981e8047278048fbbf856825d3649b2cb9d48de11d175 [2024-10-31 21:55:46,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:55:46,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:55:46,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:55:46,536 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:55:46,538 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:55:46,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i Unable to find full path for "g++" [2024-10-31 21:55:48,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:55:49,026 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:55:49,028 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i [2024-10-31 21:55:49,048 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/data/aa3aa2dc5/f6c80b165f3945a2bbe42e2d041c6373/FLAG3a60c21ca [2024-10-31 21:55:49,067 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/data/aa3aa2dc5/f6c80b165f3945a2bbe42e2d041c6373 [2024-10-31 21:55:49,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:55:49,072 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:55:49,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:55:49,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:55:49,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:55:49,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0e4ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49, skipping insertion in model container [2024-10-31 21:55:49,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:55:49,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:55:49,559 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:55:49,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:55:49,638 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:55:49,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49 WrapperNode [2024-10-31 21:55:49,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:55:49,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:55:49,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:55:49,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:55:49,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,707 INFO L138 Inliner]: procedures = 122, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 113 [2024-10-31 21:55:49,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:55:49,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:55:49,711 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:55:49,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:55:49,725 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,728 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,754 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-10-31 21:55:49,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:55:49,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:55:49,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:55:49,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:55:49,791 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (1/1) ... [2024-10-31 21:55:49,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:55:49,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:55:49,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:55:49,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:55:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 21:55:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 21:55:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 21:55:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 21:55:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 21:55:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:55:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 21:55:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 21:55:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 21:55:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 21:55:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 21:55:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:55:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 21:55:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:55:49,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:55:50,026 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:55:50,028 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:55:50,317 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-10-31 21:55:50,318 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:55:50,331 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:55:50,331 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 21:55:50,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:55:50 BoogieIcfgContainer [2024-10-31 21:55:50,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:55:50,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:55:50,335 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:55:50,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:55:50,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:55:49" (1/3) ... [2024-10-31 21:55:50,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7684787b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:55:50, skipping insertion in model container [2024-10-31 21:55:50,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:49" (2/3) ... [2024-10-31 21:55:50,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7684787b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:55:50, skipping insertion in model container [2024-10-31 21:55:50,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:55:50" (3/3) ... [2024-10-31 21:55:50,343 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_nullified-2.i [2024-10-31 21:55:50,363 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:55:50,364 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 21:55:50,431 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:55:50,438 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;@3ea1198f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:55:50,438 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 21:55:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:55:50,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 21:55:50,449 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:55:50,449 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:55:50,450 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:55:50,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:55:50,455 INFO L85 PathProgramCache]: Analyzing trace with hash 298761421, now seen corresponding path program 1 times [2024-10-31 21:55:50,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:55:50,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399929952] [2024-10-31 21:55:50,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:55:50,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:55:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:55:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:55:50,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:55:50,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399929952] [2024-10-31 21:55:50,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399929952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:55:50,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:55:50,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:55:50,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472988962] [2024-10-31 21:55:50,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:55:50,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:55:50,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:55:50,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:55:50,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:55:50,911 INFO L87 Difference]: Start difference. First operand has 32 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 31 states have internal predecessors, (46), 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:55:50,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:55:50,983 INFO L93 Difference]: Finished difference Result 67 states and 99 transitions. [2024-10-31 21:55:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:55:50,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2024-10-31 21:55:50,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:55:50,994 INFO L225 Difference]: With dead ends: 67 [2024-10-31 21:55:50,995 INFO L226 Difference]: Without dead ends: 15 [2024-10-31 21:55:50,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:55:51,002 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:55:51,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 70 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:55:51,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-31 21:55:51,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-31 21:55:51,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:55:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-10-31 21:55:51,039 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8 [2024-10-31 21:55:51,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:55:51,039 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-10-31 21:55:51,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:55:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-10-31 21:55:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 21:55:51,040 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:55:51,040 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:55:51,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:55:51,041 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:55:51,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:55:51,042 INFO L85 PathProgramCache]: Analyzing trace with hash 298763343, now seen corresponding path program 1 times [2024-10-31 21:55:51,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:55:51,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595899246] [2024-10-31 21:55:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:55:51,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:55:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:55:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:55:51,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:55:51,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595899246] [2024-10-31 21:55:51,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595899246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:55:51,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:55:51,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:55:51,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309925804] [2024-10-31 21:55:51,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:55:51,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:55:51,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:55:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:55:51,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:55:51,204 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:55:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:55:51,231 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2024-10-31 21:55:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:55:51,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) Word has length 8 [2024-10-31 21:55:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:55:51,233 INFO L225 Difference]: With dead ends: 15 [2024-10-31 21:55:51,233 INFO L226 Difference]: Without dead ends: 14 [2024-10-31 21:55:51,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:55:51,235 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:55:51,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:55:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-10-31 21:55:51,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-10-31 21:55:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2024-10-31 21:55:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-10-31 21:55:51,240 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2024-10-31 21:55:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:55:51,240 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-10-31 21:55:51,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:55:51,241 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-10-31 21:55:51,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-31 21:55:51,241 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:55:51,241 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:55:51,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:55:51,242 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:55:51,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:55:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash 671729101, now seen corresponding path program 1 times [2024-10-31 21:55:51,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:55:51,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20954849] [2024-10-31 21:55:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:55:51,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:55:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:55:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:55:51,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:55:51,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20954849] [2024-10-31 21:55:51,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20954849] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:55:51,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:55:51,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:55:51,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176313982] [2024-10-31 21:55:51,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:55:51,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:55:51,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:55:51,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:55:51,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:55:51,446 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:55:51,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:55:51,480 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-10-31 21:55:51,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:55:51,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2024-10-31 21:55:51,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:55:51,482 INFO L225 Difference]: With dead ends: 18 [2024-10-31 21:55:51,482 INFO L226 Difference]: Without dead ends: 17 [2024-10-31 21:55:51,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:55:51,483 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:55:51,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:55:51,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-31 21:55:51,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-31 21:55:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:55:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-10-31 21:55:51,492 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2024-10-31 21:55:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:55:51,493 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-31 21:55:51,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:55:51,493 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-10-31 21:55:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-31 21:55:51,494 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:55:51,494 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 21:55:51,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:55:51,494 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:55:51,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:55:51,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1366439772, now seen corresponding path program 1 times [2024-10-31 21:55:51,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:55:51,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549690270] [2024-10-31 21:55:51,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:55:51,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:55:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:55:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:55:51,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:55:51,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549690270] [2024-10-31 21:55:51,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549690270] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:55:51,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096876001] [2024-10-31 21:55:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:55:51,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:55:51,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:55:51,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:55:51,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:55:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:55:51,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 21:55:51,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:55:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:55:52,078 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:55:52,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096876001] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:55:52,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:55:52,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-10-31 21:55:52,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118530420] [2024-10-31 21:55:52,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:55:52,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:55:52,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:55:52,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:55:52,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:55:52,080 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:55:52,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:55:52,116 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-10-31 21:55:52,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:55:52,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) Word has length 16 [2024-10-31 21:55:52,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:55:52,117 INFO L225 Difference]: With dead ends: 17 [2024-10-31 21:55:52,117 INFO L226 Difference]: Without dead ends: 0 [2024-10-31 21:55:52,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:55:52,118 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:55:52,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:55:52,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-31 21:55:52,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-31 21:55:52,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:55:52,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-31 21:55:52,124 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2024-10-31 21:55:52,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:55:52,125 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 21:55:52,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:55:52,125 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-31 21:55:52,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-31 21:55:52,129 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-10-31 21:55:52,130 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-10-31 21:55:52,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 21:55:52,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:55:52,339 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-31 21:55:52,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-31 21:55:52,370 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 21:55:52,388 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~head~0!offset [2024-10-31 21:55:52,389 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~head~0!base [2024-10-31 21:55:52,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 09:55:52 BoogieIcfgContainer [2024-10-31 21:55:52,392 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 21:55:52,393 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 21:55:52,393 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 21:55:52,393 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 21:55:52,395 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:55:50" (3/4) ... [2024-10-31 21:55:52,398 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-10-31 21:55:52,409 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-10-31 21:55:52,409 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-31 21:55:52,410 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-31 21:55:52,410 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-31 21:55:52,501 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 21:55:52,501 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/witness.yml [2024-10-31 21:55:52,502 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 21:55:52,502 INFO L158 Benchmark]: Toolchain (without parser) took 3430.61ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 80.7MB in the beginning and 61.1MB in the end (delta: 19.5MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. [2024-10-31 21:55:52,503 INFO L158 Benchmark]: CDTParser took 1.28ms. Allocated memory is still 117.4MB. Free memory is still 92.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 21:55:52,503 INFO L158 Benchmark]: CACSL2BoogieTranslator took 563.85ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 61.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-31 21:55:52,503 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.83ms. Allocated memory is still 117.4MB. Free memory was 61.3MB in the beginning and 59.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 21:55:52,504 INFO L158 Benchmark]: Boogie Preprocessor took 75.11ms. Allocated memory is still 117.4MB. Free memory was 59.2MB in the beginning and 56.7MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-31 21:55:52,504 INFO L158 Benchmark]: RCFGBuilder took 544.99ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 56.7MB in the beginning and 121.0MB in the end (delta: -64.3MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2024-10-31 21:55:52,505 INFO L158 Benchmark]: TraceAbstraction took 2057.56ms. Allocated memory is still 153.1MB. Free memory was 120.6MB in the beginning and 67.4MB in the end (delta: 53.1MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. [2024-10-31 21:55:52,505 INFO L158 Benchmark]: Witness Printer took 108.69ms. Allocated memory is still 153.1MB. Free memory was 67.4MB in the beginning and 61.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-31 21:55:52,507 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.28ms. Allocated memory is still 117.4MB. Free memory is still 92.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 563.85ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 61.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.83ms. Allocated memory is still 117.4MB. Free memory was 61.3MB in the beginning and 59.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.11ms. Allocated memory is still 117.4MB. Free memory was 59.2MB in the beginning and 56.7MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 544.99ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 56.7MB in the beginning and 121.0MB in the end (delta: -64.3MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2057.56ms. Allocated memory is still 153.1MB. Free memory was 120.6MB in the beginning and 67.4MB in the end (delta: 53.1MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. * Witness Printer took 108.69ms. Allocated memory is still 153.1MB. Free memory was 67.4MB in the beginning and 61.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~head~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~head~0!base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 593]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 593]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 122 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 59 mSDtfsCounter, 61 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 9/14 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 - InvariantResult [Line: 579]: Loop Invariant Derived loop invariant: ((len < 5) || (5 == len)) - InvariantResult [Line: 600]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 606]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2024-10-31 21:55:52,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6f28ea-c1f6-4c2b-9dcb-533f7b0f0b68/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE