./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7d18364cf74a7e83a7d0637d6dc5303d99591a287435332871b1650f13e39eb3 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 14:20:56,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 14:20:56,065 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 14:20:56,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 14:20:56,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 14:20:56,095 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 14:20:56,096 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 14:20:56,097 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 14:20:56,097 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 14:20:56,098 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 14:20:56,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 14:20:56,099 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 14:20:56,100 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 14:20:56,100 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 14:20:56,100 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 14:20:56,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 14:20:56,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 14:20:56,103 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 14:20:56,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 14:20:56,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 14:20:56,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 14:20:56,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 14:20:56,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 14:20:56,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 14:20:56,105 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 14:20:56,105 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 14:20:56,105 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 14:20:56,105 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 14:20:56,106 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 14:20:56,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 14:20:56,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 14:20:56,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 14:20:56,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:20:56,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 14:20:56,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 14:20:56,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 14:20:56,107 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 14:20:56,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 14:20:56,108 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 14:20:56,108 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 14:20:56,108 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 14:20:56,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 14:20:56,108 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:/storage/repos/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d18364cf74a7e83a7d0637d6dc5303d99591a287435332871b1650f13e39eb3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 14:20:56,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 14:20:56,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 14:20:56,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 14:20:56,311 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 14:20:56,311 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 14:20:56,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2024-10-15 14:20:57,626 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 14:20:57,808 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 14:20:57,808 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2024-10-15 14:20:57,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/4344c2e56/daae216cdeec44efb940374022873a15/FLAG3d5ea7ed3 [2024-10-15 14:20:57,836 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/4344c2e56/daae216cdeec44efb940374022873a15 [2024-10-15 14:20:57,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 14:20:57,842 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 14:20:57,845 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 14:20:57,845 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 14:20:57,850 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 14:20:57,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:20:57" (1/1) ... [2024-10-15 14:20:57,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760c2da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:57, skipping insertion in model container [2024-10-15 14:20:57,851 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:20:57" (1/1) ... [2024-10-15 14:20:57,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 14:20:58,090 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2024-10-15 14:20:58,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:20:58,112 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 14:20:58,166 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2024-10-15 14:20:58,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:20:58,228 INFO L204 MainTranslator]: Completed translation [2024-10-15 14:20:58,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58 WrapperNode [2024-10-15 14:20:58,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 14:20:58,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 14:20:58,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 14:20:58,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 14:20:58,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (1/1) ... [2024-10-15 14:20:58,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (1/1) ... [2024-10-15 14:20:58,263 INFO L138 Inliner]: procedures = 17, calls = 198, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 14:20:58,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 14:20:58,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 14:20:58,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 14:20:58,272 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 14:20:58,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (1/1) ... [2024-10-15 14:20:58,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (1/1) ... [2024-10-15 14:20:58,297 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (1/1) ... [2024-10-15 14:20:58,320 INFO L175 MemorySlicer]: Split 179 memory accesses to 5 slices as follows [2, 7, 41, 2, 127]. 71 percent of accesses are in the largest equivalence class. The 137 initializations are split as follows [2, 7, 0, 2, 126]. The 0 writes are split as follows [0, 0, 0, 0, 0]. [2024-10-15 14:20:58,320 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (1/1) ... [2024-10-15 14:20:58,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (1/1) ... [2024-10-15 14:20:58,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (1/1) ... [2024-10-15 14:20:58,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (1/1) ... [2024-10-15 14:20:58,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (1/1) ... [2024-10-15 14:20:58,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (1/1) ... [2024-10-15 14:20:58,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 14:20:58,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 14:20:58,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 14:20:58,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 14:20:58,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (1/1) ... [2024-10-15 14:20:58,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:20:58,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:58,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 14:20:58,383 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 14:20:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-15 14:20:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-15 14:20:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-15 14:20:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-15 14:20:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-15 14:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 14:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 14:20:58,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 14:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 14:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 14:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-15 14:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-15 14:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-15 14:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-15 14:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 14:20:58,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 14:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 14:20:58,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 14:20:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 14:20:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 14:20:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-15 14:20:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-15 14:20:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-15 14:20:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-15 14:20:58,509 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 14:20:58,511 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 14:20:58,862 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-10-15 14:20:58,862 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 14:20:58,876 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 14:20:58,877 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-15 14:20:58,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:20:58 BoogieIcfgContainer [2024-10-15 14:20:58,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 14:20:58,879 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 14:20:58,879 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 14:20:58,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 14:20:58,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:20:57" (1/3) ... [2024-10-15 14:20:58,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59120620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:20:58, skipping insertion in model container [2024-10-15 14:20:58,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:58" (2/3) ... [2024-10-15 14:20:58,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59120620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:20:58, skipping insertion in model container [2024-10-15 14:20:58,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:20:58" (3/3) ... [2024-10-15 14:20:58,885 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2024-10-15 14:20:58,897 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 14:20:58,898 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 14:20:58,947 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 14:20:58,955 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=All, 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;@762aead2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 14:20:58,957 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 14:20:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 14:20:58,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-15 14:20:58,967 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:58,968 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:58,968 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:58,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:58,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1362931202, now seen corresponding path program 1 times [2024-10-15 14:20:58,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:58,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639676614] [2024-10-15 14:20:58,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:58,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:59,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:20:59,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:59,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639676614] [2024-10-15 14:20:59,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639676614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:20:59,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:20:59,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:20:59,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941356650] [2024-10-15 14:20:59,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:20:59,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:20:59,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:59,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:20:59,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:20:59,805 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:20:59,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:59,924 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2024-10-15 14:20:59,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 14:20:59,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-10-15 14:20:59,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:59,934 INFO L225 Difference]: With dead ends: 45 [2024-10-15 14:20:59,934 INFO L226 Difference]: Without dead ends: 23 [2024-10-15 14:20:59,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-15 14:20:59,938 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:59,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 28 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:20:59,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-15 14:20:59,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2024-10-15 14:20:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:20:59,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-10-15 14:20:59,964 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-10-15 14:20:59,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:59,965 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-15 14:20:59,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:20:59,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:59,966 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-10-15 14:20:59,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-15 14:20:59,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:59,966 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:59,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 14:20:59,967 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:59,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:59,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1362514128, now seen corresponding path program 1 times [2024-10-15 14:20:59,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:59,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877341238] [2024-10-15 14:20:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:59,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:00,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:21:00,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:00,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877341238] [2024-10-15 14:21:00,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877341238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:21:00,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:21:00,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:21:00,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037088264] [2024-10-15 14:21:00,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:21:00,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:21:00,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:00,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:21:00,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:21:00,219 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:21:00,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:00,267 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2024-10-15 14:21:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:21:00,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-10-15 14:21:00,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:00,268 INFO L225 Difference]: With dead ends: 21 [2024-10-15 14:21:00,268 INFO L226 Difference]: Without dead ends: 19 [2024-10-15 14:21:00,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:21:00,269 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:00,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 25 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:21:00,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-15 14:21:00,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-15 14:21:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:21:00,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-10-15 14:21:00,276 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 12 [2024-10-15 14:21:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:00,277 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-10-15 14:21:00,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:21:00,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:00,278 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-10-15 14:21:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-15 14:21:00,278 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:00,278 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:00,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 14:21:00,278 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:00,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:00,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1228215114, now seen corresponding path program 1 times [2024-10-15 14:21:00,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:00,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727345883] [2024-10-15 14:21:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:00,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:00,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:21:00,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:00,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727345883] [2024-10-15 14:21:00,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727345883] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:00,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246681733] [2024-10-15 14:21:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:00,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:00,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:00,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:21:00,590 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 14:21:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:00,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 14:21:00,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:21:00,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:21:00,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246681733] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:00,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:00,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-10-15 14:21:00,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365060404] [2024-10-15 14:21:00,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:00,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 14:21:00,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:00,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 14:21:00,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-15 14:21:00,977 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:21:01,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:01,142 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2024-10-15 14:21:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-15 14:21:01,142 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-10-15 14:21:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:01,143 INFO L225 Difference]: With dead ends: 52 [2024-10-15 14:21:01,143 INFO L226 Difference]: Without dead ends: 42 [2024-10-15 14:21:01,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-15 14:21:01,145 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 55 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:01,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 43 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:21:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-15 14:21:01,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2024-10-15 14:21:01,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:21:01,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-10-15 14:21:01,158 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 18 [2024-10-15 14:21:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:01,158 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-10-15 14:21:01,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:21:01,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-10-15 14:21:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-15 14:21:01,160 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:01,160 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:01,173 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 14:21:01,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:01,361 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:01,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:01,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1574584542, now seen corresponding path program 2 times [2024-10-15 14:21:01,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:01,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046173872] [2024-10-15 14:21:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:01,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:01,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:01,746 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:21:01,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:01,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046173872] [2024-10-15 14:21:01,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046173872] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:01,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807598522] [2024-10-15 14:21:01,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:21:01,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:01,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:01,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:21:01,751 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 14:21:02,061 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:21:02,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:02,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 14:21:02,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:21:02,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:21:02,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807598522] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:02,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:02,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2024-10-15 14:21:02,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124347481] [2024-10-15 14:21:02,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:02,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-15 14:21:02,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:02,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-15 14:21:02,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-10-15 14:21:02,264 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:21:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:02,726 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2024-10-15 14:21:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 14:21:02,727 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-10-15 14:21:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:02,728 INFO L225 Difference]: With dead ends: 88 [2024-10-15 14:21:02,728 INFO L226 Difference]: Without dead ends: 78 [2024-10-15 14:21:02,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2024-10-15 14:21:02,729 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 88 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:02,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 130 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:21:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-15 14:21:02,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2024-10-15 14:21:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:21:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2024-10-15 14:21:02,743 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 36 [2024-10-15 14:21:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:02,743 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2024-10-15 14:21:02,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:21:02,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:02,744 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2024-10-15 14:21:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-15 14:21:02,745 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:02,745 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:02,759 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 14:21:02,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:02,950 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:02,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:02,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1190511826, now seen corresponding path program 3 times [2024-10-15 14:21:02,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:02,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066337594] [2024-10-15 14:21:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:02,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 20 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:21:03,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:03,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066337594] [2024-10-15 14:21:03,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066337594] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:03,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213657964] [2024-10-15 14:21:03,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:21:03,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:03,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:03,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:21:03,486 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 14:21:03,826 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-15 14:21:03,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:03,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-15 14:21:03,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:04,147 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 14:21:04,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 17 [2024-10-15 14:21:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 56 proven. 39 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-15 14:21:04,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 20 proven. 75 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-15 14:21:05,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213657964] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:05,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:05,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 27 [2024-10-15 14:21:05,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519230933] [2024-10-15 14:21:05,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:05,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-15 14:21:05,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:05,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-15 14:21:05,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2024-10-15 14:21:05,419 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 26 states have internal predecessors, (102), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:21:06,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:06,287 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2024-10-15 14:21:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-15 14:21:06,287 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 26 states have internal predecessors, (102), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2024-10-15 14:21:06,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:06,288 INFO L225 Difference]: With dead ends: 93 [2024-10-15 14:21:06,288 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 14:21:06,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=584, Invalid=2278, Unknown=0, NotChecked=0, Total=2862 [2024-10-15 14:21:06,290 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 142 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:06,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 276 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:21:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 14:21:06,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 14:21:06,291 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) [2024-10-15 14:21:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 14:21:06,291 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2024-10-15 14:21:06,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:06,291 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 14:21:06,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 26 states have internal predecessors, (102), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:21:06,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 14:21:06,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 14:21:06,294 INFO L782 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 14:21:06,308 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:06,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:06,499 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-15 14:21:06,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 14:21:07,185 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 14:21:07,193 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 14:21:07,194 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-15 14:21:07,194 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[~#Id_MCDC_89__Id_MCDC_95~0!base,]]] [2024-10-15 14:21:07,194 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#Id_MCDC_89__Id_MCDC_95~0!offset [2024-10-15 14:21:07,194 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 14:21:07,194 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-15 14:21:07,194 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[~#Id_MCDC_89__Id_MCDC_95~0!base,]]] [2024-10-15 14:21:07,195 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#Id_MCDC_89__Id_MCDC_95~0!offset [2024-10-15 14:21:07,197 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 14:21:07,198 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-15 14:21:07,198 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[~#Id_MCDC_89__Id_MCDC_95~0!base,]]] [2024-10-15 14:21:07,198 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#Id_MCDC_89__Id_MCDC_95~0!offset [2024-10-15 14:21:07,198 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 14:21:07,198 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-15 14:21:07,198 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[~#Id_MCDC_89__Id_MCDC_95~0!base,]]] [2024-10-15 14:21:07,199 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#Id_MCDC_89__Id_MCDC_95~0!offset [2024-10-15 14:21:07,199 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-15 14:21:07,199 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-15 14:21:07,199 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[~#Id_MCDC_89__Id_MCDC_95~0!base,]]] [2024-10-15 14:21:07,199 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#Id_MCDC_89__Id_MCDC_95~0!offset [2024-10-15 14:21:07,202 WARN L156 FloydHoareUtils]: Requires clause for main contained old-variable. Original clause: (and (= ~Id_MCDC_93~0 0) (= |old(~Id_MCDC_93~0)| 0)) Eliminated clause: (= ~Id_MCDC_93~0 0) [2024-10-15 14:21:07,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:21:07 BoogieIcfgContainer [2024-10-15 14:21:07,205 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 14:21:07,206 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 14:21:07,206 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 14:21:07,206 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 14:21:07,206 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:20:58" (3/4) ... [2024-10-15 14:21:07,208 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 14:21:07,249 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 14:21:07,249 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 14:21:07,249 INFO L158 Benchmark]: Toolchain (without parser) took 9407.58ms. Allocated memory was 180.4MB in the beginning and 381.7MB in the end (delta: 201.3MB). Free memory was 109.0MB in the beginning and 295.7MB in the end (delta: -186.6MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2024-10-15 14:21:07,250 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 180.4MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:21:07,250 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.43ms. Allocated memory is still 180.4MB. Free memory was 108.8MB in the beginning and 147.8MB in the end (delta: -39.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2024-10-15 14:21:07,250 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.78ms. Allocated memory is still 180.4MB. Free memory was 147.8MB in the beginning and 146.9MB in the end (delta: 915.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:21:07,250 INFO L158 Benchmark]: Boogie Preprocessor took 73.94ms. Allocated memory is still 180.4MB. Free memory was 146.9MB in the beginning and 141.7MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-15 14:21:07,250 INFO L158 Benchmark]: RCFGBuilder took 531.64ms. Allocated memory is still 180.4MB. Free memory was 141.7MB in the beginning and 86.2MB in the end (delta: 55.4MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2024-10-15 14:21:07,251 INFO L158 Benchmark]: TraceAbstraction took 8326.02ms. Allocated memory was 180.4MB in the beginning and 381.7MB in the end (delta: 201.3MB). Free memory was 86.2MB in the beginning and 297.8MB in the end (delta: -211.6MB). Peak memory consumption was 165.7MB. Max. memory is 16.1GB. [2024-10-15 14:21:07,251 INFO L158 Benchmark]: Witness Printer took 43.58ms. Allocated memory is still 381.7MB. Free memory was 297.8MB in the beginning and 295.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 14:21:07,252 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 180.4MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.43ms. Allocated memory is still 180.4MB. Free memory was 108.8MB in the beginning and 147.8MB in the end (delta: -39.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.78ms. Allocated memory is still 180.4MB. Free memory was 147.8MB in the beginning and 146.9MB in the end (delta: 915.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 73.94ms. Allocated memory is still 180.4MB. Free memory was 146.9MB in the beginning and 141.7MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 531.64ms. Allocated memory is still 180.4MB. Free memory was 141.7MB in the beginning and 86.2MB in the end (delta: 55.4MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8326.02ms. Allocated memory was 180.4MB in the beginning and 381.7MB in the end (delta: 201.3MB). Free memory was 86.2MB in the beginning and 297.8MB in the end (delta: -211.6MB). Peak memory consumption was 165.7MB. Max. memory is 16.1GB. * Witness Printer took 43.58ms. Allocated memory is still 381.7MB. Free memory was 297.8MB in the beginning and 295.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[~#Id_MCDC_89__Id_MCDC_95~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#Id_MCDC_89__Id_MCDC_95~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[~#Id_MCDC_89__Id_MCDC_95~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#Id_MCDC_89__Id_MCDC_95~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[~#Id_MCDC_89__Id_MCDC_95~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#Id_MCDC_89__Id_MCDC_95~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[~#Id_MCDC_89__Id_MCDC_95~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#Id_MCDC_89__Id_MCDC_95~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[~#Id_MCDC_89__Id_MCDC_95~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#Id_MCDC_89__Id_MCDC_95~0!offset * 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: 193]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.6s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 322 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 322 mSDsluCounter, 502 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 437 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 979 IncrementalHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 65 mSDtfsCounter, 979 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 346 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=4, InterpolantAutomatonStates: 74, 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 276 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 391 ConstructedInterpolants, 55 QuantifiedInterpolants, 3828 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1798 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 576/1143 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 1 specifications checked. All of them hold - InvariantResult [Line: 182]: Location Invariant Derived location invariant: (((((Id_MCDC_89____CPAchecker_TMP_1 == 1) && (Id_MCDC_93 == 0)) && (Id_MCDC_89__Id_MCDC_96 == 0)) || ((((Id_MCDC_89____CPAchecker_TMP_1 == 1) && (((Id_MCDC_93 + 4294967295) % 4294967296) <= 41)) && (Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96)) && (Id_MCDC_93 <= 41))) && (\old(Id_MCDC_93) == 0)) - InvariantResult [Line: 167]: Location Invariant Derived location invariant: (((((Id_MCDC_93 == 0) && (Id_MCDC_89__Id_MCDC_96 == 0)) || ((((41 != ((Id_MCDC_93 + 4294967295) % 4294967296)) && (41 != ((4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296))) && (((4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296) <= 41)) && (((Id_MCDC_93 + 4294967295) % 4294967296) <= 41))) || (((Id_MCDC_89__Id_MCDC_96 == 1) && (Id_MCDC_93 <= 1)) && (0 <= 0))) && (\old(Id_MCDC_93) == 0)) - ProcedureContractResult [Line: 133]: Procedure Contract for main Derived contract for procedure main. Requires: (Id_MCDC_93 == 0) Ensures: ((\old(Id_MCDC_93) == 0) && (__return_main == \old(__return_main))) RESULT: Ultimate proved your program to be correct! [2024-10-15 14:21:07,274 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/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