./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ifeqn2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ifeqn2f.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 e24b838069ca4ac21576eee3a7e9698c0205fcb1616223a97abf5d151b58871d --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 10:00:21,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:00:21,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:00:21,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:00:21,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:00:21,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:00:21,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:00:21,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:00:21,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:00:21,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:00:21,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:00:21,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:00:21,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:00:21,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:00:21,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:00:21,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:00:21,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:00:21,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:00:21,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:00:21,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:00:21,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:00:21,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:00:21,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:00:21,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:00:21,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:00:21,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:00:21,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:00:21,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:00:21,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:00:21,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:00:21,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:00:21,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:00:21,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:00:21,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:00:21,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:00:21,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:00:21,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:00:21,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:00:21,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:00:21,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:00:21,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:00:21,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:00:21,356 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:00:21,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:00:21,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:00:21,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:00:21,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:00:21,358 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:00:21,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:00:21,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:00:21,359 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:00:21,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:00:21,360 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:00:21,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:00:21,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:00:21,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:00:21,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:00:21,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:00:21,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:00:21,361 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:00:21,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:00:21,361 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:00:21,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:00:21,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:00:21,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:00:21,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:00:21,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:00:21,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:00:21,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:00:21,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:00:21,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:00:21,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:00:21,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:00:21,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:00:21,364 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:00:21,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:00:21,364 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:00:21,364 INFO L138 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e24b838069ca4ac21576eee3a7e9698c0205fcb1616223a97abf5d151b58871d [2023-02-15 10:00:21,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:00:21,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:00:21,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:00:21,577 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:00:21,577 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:00:21,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ifeqn2f.c [2023-02-15 10:00:22,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:00:22,704 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:00:22,705 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn2f.c [2023-02-15 10:00:22,710 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f332bb01/05cdbbf10fc44fd388fd77af679fce45/FLAG4c084ef36 [2023-02-15 10:00:22,721 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f332bb01/05cdbbf10fc44fd388fd77af679fce45 [2023-02-15 10:00:22,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:00:22,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:00:22,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:00:22,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:00:22,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:00:22,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3cda46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22, skipping insertion in model container [2023-02-15 10:00:22,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:00:22,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:00:22,841 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn2f.c[590,603] [2023-02-15 10:00:22,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:00:22,858 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:00:22,865 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn2f.c[590,603] [2023-02-15 10:00:22,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:00:22,882 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:00:22,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22 WrapperNode [2023-02-15 10:00:22,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:00:22,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:00:22,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:00:22,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:00:22,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,902 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-02-15 10:00:22,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:00:22,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:00:22,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:00:22,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:00:22,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,920 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:00:22,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:00:22,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:00:22,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:00:22,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22" (1/1) ... [2023-02-15 10:00:22,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:00:22,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:00:22,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 10:00:22,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 10:00:22,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:00:22,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:00:22,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 10:00:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 10:00:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:00:22,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:00:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 10:00:23,037 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:00:23,039 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:00:23,205 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:00:23,209 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:00:23,210 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 10:00:23,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:00:23 BoogieIcfgContainer [2023-02-15 10:00:23,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:00:23,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:00:23,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:00:23,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:00:23,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:00:22" (1/3) ... [2023-02-15 10:00:23,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd6b2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:00:23, skipping insertion in model container [2023-02-15 10:00:23,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:00:22" (2/3) ... [2023-02-15 10:00:23,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd6b2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:00:23, skipping insertion in model container [2023-02-15 10:00:23,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:00:23" (3/3) ... [2023-02-15 10:00:23,216 INFO L112 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c [2023-02-15 10:00:23,227 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:00:23,228 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 10:00:23,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:00:23,280 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3e98ee67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:00:23,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 10:00:23,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:00:23,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 10:00:23,290 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:00:23,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:00:23,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:00:23,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:00:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2023-02-15 10:00:23,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:00:23,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495308047] [2023-02-15 10:00:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:00:23,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:00:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:00:23,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:00:23,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495308047] [2023-02-15 10:00:23,421 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 10:00:23,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722613312] [2023-02-15 10:00:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:00:23,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:00:23,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:00:23,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:00:23,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 10:00:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:00:23,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 10:00:23,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:00:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:00:23,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:00:23,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722613312] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:00:23,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:00:23,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 10:00:23,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709663147] [2023-02-15 10:00:23,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:00:23,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 10:00:23,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:00:23,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 10:00:23,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:00:23,589 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:00:23,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:00:23,599 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2023-02-15 10:00:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 10:00:23,601 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2023-02-15 10:00:23,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:00:23,605 INFO L225 Difference]: With dead ends: 42 [2023-02-15 10:00:23,606 INFO L226 Difference]: Without dead ends: 19 [2023-02-15 10:00:23,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:00:23,610 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:00:23,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:00:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-15 10:00:23,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-15 10:00:23,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:00:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-15 10:00:23,630 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2023-02-15 10:00:23,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:00:23,631 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-15 10:00:23,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:00:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-15 10:00:23,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 10:00:23,631 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:00:23,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:00:23,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 10:00:23,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 10:00:23,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:00:23,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:00:23,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2023-02-15 10:00:23,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:00:23,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518840237] [2023-02-15 10:00:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:00:23,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:00:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:00:23,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:00:23,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518840237] [2023-02-15 10:00:23,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 10:00:23,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87716234] [2023-02-15 10:00:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:00:23,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:00:23,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:00:23,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:00:23,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 10:00:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:00:23,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 10:00:23,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:00:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:00:23,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:00:23,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87716234] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:00:23,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:00:23,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:00:23,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15953836] [2023-02-15 10:00:23,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:00:23,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:00:23,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:00:23,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:00:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:00:23,978 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:00:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:00:24,026 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2023-02-15 10:00:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:00:24,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2023-02-15 10:00:24,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:00:24,031 INFO L225 Difference]: With dead ends: 42 [2023-02-15 10:00:24,031 INFO L226 Difference]: Without dead ends: 31 [2023-02-15 10:00:24,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:00:24,032 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:00:24,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 15 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:00:24,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-15 10:00:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2023-02-15 10:00:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:00:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-02-15 10:00:24,036 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2023-02-15 10:00:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:00:24,037 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-02-15 10:00:24,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:00:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-02-15 10:00:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 10:00:24,038 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:00:24,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:00:24,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 10:00:24,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 10:00:24,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:00:24,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:00:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2023-02-15 10:00:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:00:24,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804208952] [2023-02-15 10:00:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:00:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:00:24,266 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:00:24,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712169195] [2023-02-15 10:00:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:00:24,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:00:24,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:00:24,272 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:00:24,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 10:00:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 10:00:24,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 10:00:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 10:00:24,347 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 10:00:24,348 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 10:00:24,349 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 10:00:24,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 10:00:24,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:00:24,557 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-15 10:00:24,560 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 10:00:24,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 10:00:24 BoogieIcfgContainer [2023-02-15 10:00:24,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 10:00:24,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 10:00:24,580 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 10:00:24,580 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 10:00:24,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:00:23" (3/4) ... [2023-02-15 10:00:24,581 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-15 10:00:24,607 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 10:00:24,608 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 10:00:24,608 INFO L158 Benchmark]: Toolchain (without parser) took 1884.40ms. Allocated memory was 169.9MB in the beginning and 243.3MB in the end (delta: 73.4MB). Free memory was 134.5MB in the beginning and 197.7MB in the end (delta: -63.2MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2023-02-15 10:00:24,609 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 169.9MB. Free memory was 132.1MB in the beginning and 132.0MB in the end (delta: 16.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 10:00:24,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.74ms. Allocated memory is still 169.9MB. Free memory was 134.5MB in the beginning and 124.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 10:00:24,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.63ms. Allocated memory is still 169.9MB. Free memory was 124.0MB in the beginning and 122.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 10:00:24,610 INFO L158 Benchmark]: Boogie Preprocessor took 19.10ms. Allocated memory is still 169.9MB. Free memory was 122.0MB in the beginning and 121.0MB in the end (delta: 970.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 10:00:24,610 INFO L158 Benchmark]: RCFGBuilder took 288.65ms. Allocated memory is still 169.9MB. Free memory was 121.0MB in the beginning and 109.0MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 10:00:24,610 INFO L158 Benchmark]: TraceAbstraction took 1366.76ms. Allocated memory was 169.9MB in the beginning and 243.3MB in the end (delta: 73.4MB). Free memory was 108.4MB in the beginning and 199.8MB in the end (delta: -91.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 10:00:24,611 INFO L158 Benchmark]: Witness Printer took 28.25ms. Allocated memory is still 243.3MB. Free memory was 199.8MB in the beginning and 197.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 10:00:24,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 169.9MB. Free memory was 132.1MB in the beginning and 132.0MB in the end (delta: 16.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.74ms. Allocated memory is still 169.9MB. Free memory was 134.5MB in the beginning and 124.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.63ms. Allocated memory is still 169.9MB. Free memory was 124.0MB in the beginning and 122.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.10ms. Allocated memory is still 169.9MB. Free memory was 122.0MB in the beginning and 121.0MB in the end (delta: 970.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.65ms. Allocated memory is still 169.9MB. Free memory was 121.0MB in the beginning and 109.0MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1366.76ms. Allocated memory was 169.9MB in the beginning and 243.3MB in the end (delta: 73.4MB). Free memory was 108.4MB in the beginning and 199.8MB in the end (delta: -91.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 28.25ms. Allocated memory is still 243.3MB. Free memory was 199.8MB in the beginning and 197.7MB 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.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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [a={-2:0}, b={-1:0}, i=0, N=1] [L31] COND TRUE i