./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ss1f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/ss1f.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 d5341b7d8f13e16ae2d92360900d900df8802cfb6c3c57b424faed09c7a6099f --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 13:05:21,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 13:05:21,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 13:05:21,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 13:05:21,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 13:05:21,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 13:05:21,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 13:05:21,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 13:05:21,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 13:05:21,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 13:05:21,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 13:05:21,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 13:05:21,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 13:05:21,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 13:05:21,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 13:05:21,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 13:05:21,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 13:05:21,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 13:05:21,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 13:05:21,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 13:05:21,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 13:05:21,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 13:05:21,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 13:05:21,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 13:05:21,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 13:05:21,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 13:05:21,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 13:05:21,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 13:05:21,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 13:05:21,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 13:05:21,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 13:05:21,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 13:05:21,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 13:05:21,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 13:05:21,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 13:05:21,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 13:05:21,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 13:05:21,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 13:05:21,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 13:05:21,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 13:05:21,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 13:05:21,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 13:05:21,190 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 13:05:21,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 13:05:21,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 13:05:21,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 13:05:21,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 13:05:21,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 13:05:21,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 13:05:21,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 13:05:21,193 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 13:05:21,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 13:05:21,193 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 13:05:21,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 13:05:21,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 13:05:21,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 13:05:21,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 13:05:21,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 13:05:21,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 13:05:21,194 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 13:05:21,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 13:05:21,194 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 13:05:21,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 13:05:21,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 13:05:21,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 13:05:21,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 13:05:21,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 13:05:21,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 13:05:21,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 13:05:21,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 13:05:21,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 13:05:21,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 13:05:21,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 13:05:21,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 13:05:21,196 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 13:05:21,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 13:05:21,197 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 13:05:21,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5341b7d8f13e16ae2d92360900d900df8802cfb6c3c57b424faed09c7a6099f [2023-02-18 13:05:21,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 13:05:21,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 13:05:21,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 13:05:21,399 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 13:05:21,399 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 13:05:21,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ss1f.c [2023-02-18 13:05:22,320 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 13:05:22,503 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 13:05:22,503 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss1f.c [2023-02-18 13:05:22,507 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ef19a91/ae7077fc35504fcf955cc9b5d0f78af9/FLAG9189ca3a7 [2023-02-18 13:05:22,516 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ef19a91/ae7077fc35504fcf955cc9b5d0f78af9 [2023-02-18 13:05:22,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 13:05:22,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 13:05:22,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 13:05:22,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 13:05:22,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 13:05:22,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eac5aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22, skipping insertion in model container [2023-02-18 13:05:22,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 13:05:22,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 13:05:22,639 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/ss1f.c[587,600] [2023-02-18 13:05:22,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 13:05:22,665 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 13:05:22,675 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/ss1f.c[587,600] [2023-02-18 13:05:22,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 13:05:22,697 INFO L208 MainTranslator]: Completed translation [2023-02-18 13:05:22,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22 WrapperNode [2023-02-18 13:05:22,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 13:05:22,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 13:05:22,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 13:05:22,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 13:05:22,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,732 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-02-18 13:05:22,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 13:05:22,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 13:05:22,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 13:05:22,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 13:05:22,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,762 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 13:05:22,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 13:05:22,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 13:05:22,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 13:05:22,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22" (1/1) ... [2023-02-18 13:05:22,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 13:05:22,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:05:22,802 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) [2023-02-18 13:05:22,812 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 [2023-02-18 13:05:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 13:05:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 13:05:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 13:05:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 13:05:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 13:05:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 13:05:22,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 13:05:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 13:05:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 13:05:22,925 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 13:05:22,927 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 13:05:23,124 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 13:05:23,128 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 13:05:23,128 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-18 13:05:23,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:05:23 BoogieIcfgContainer [2023-02-18 13:05:23,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 13:05:23,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 13:05:23,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 13:05:23,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 13:05:23,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 01:05:22" (1/3) ... [2023-02-18 13:05:23,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcc44b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:05:23, skipping insertion in model container [2023-02-18 13:05:23,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:05:22" (2/3) ... [2023-02-18 13:05:23,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcc44b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:05:23, skipping insertion in model container [2023-02-18 13:05:23,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:05:23" (3/3) ... [2023-02-18 13:05:23,134 INFO L112 eAbstractionObserver]: Analyzing ICFG ss1f.c [2023-02-18 13:05:23,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 13:05:23,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 13:05:23,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 13:05:23,177 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;@6112c28e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 13:05:23,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 13:05:23,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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) [2023-02-18 13:05:23,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 13:05:23,184 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:05:23,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:05:23,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:05:23,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:05:23,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2023-02-18 13:05:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:05:23,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477457619] [2023-02-18 13:05:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:05:23,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:05:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:05:23,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:05:23,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477457619] [2023-02-18 13:05:23,318 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 13:05:23,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398925120] [2023-02-18 13:05:23,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:05:23,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:05:23,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:05:23,321 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) [2023-02-18 13:05:23,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 13:05:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:05:23,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 13:05:23,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:05:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:05:23,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 13:05:23,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398925120] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:05:23,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:05:23,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 13:05:23,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020337802] [2023-02-18 13:05:23,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:05:23,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 13:05:23,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:05:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 13:05:23,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 13:05:23,441 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:05:23,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:05:23,451 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2023-02-18 13:05:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 13:05:23,453 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-18 13:05:23,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:05:23,458 INFO L225 Difference]: With dead ends: 44 [2023-02-18 13:05:23,458 INFO L226 Difference]: Without dead ends: 20 [2023-02-18 13:05:23,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 13:05:23,465 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 [2023-02-18 13:05:23,466 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] [2023-02-18 13:05:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-18 13:05:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-18 13:05:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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) [2023-02-18 13:05:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-18 13:05:23,490 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2023-02-18 13:05:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:05:23,491 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-18 13:05:23,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:05:23,492 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-18 13:05:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 13:05:23,493 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:05:23,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:05:23,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 13:05:23,698 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 [2023-02-18 13:05:23,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:05:23,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:05:23,701 INFO L85 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2023-02-18 13:05:23,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:05:23,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579591178] [2023-02-18 13:05:23,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:05:23,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:05:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:05:23,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:05:23,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579591178] [2023-02-18 13:05:23,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 13:05:23,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239760727] [2023-02-18 13:05:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:05:23,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:05:23,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:05:23,757 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) [2023-02-18 13:05:23,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 13:05:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:05:23,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 13:05:23,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:05:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:05:23,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 13:05:23,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239760727] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:05:23,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:05:23,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 13:05:23,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593657188] [2023-02-18 13:05:23,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:05:23,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 13:05:23,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:05:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 13:05:23,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 13:05:23,858 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:05:23,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:05:23,916 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2023-02-18 13:05:23,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 13:05:23,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-18 13:05:23,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:05:23,918 INFO L225 Difference]: With dead ends: 41 [2023-02-18 13:05:23,919 INFO L226 Difference]: Without dead ends: 28 [2023-02-18 13:05:23,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 13:05:23,921 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 30 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 13:05:23,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 12 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:05:23,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-18 13:05:23,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2023-02-18 13:05:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 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) [2023-02-18 13:05:23,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-18 13:05:23,927 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2023-02-18 13:05:23,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:05:23,928 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-18 13:05:23,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:05:23,928 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-18 13:05:23,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 13:05:23,929 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:05:23,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:05:23,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 13:05:24,146 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 [2023-02-18 13:05:24,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:05:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:05:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2023-02-18 13:05:24,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:05:24,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987361847] [2023-02-18 13:05:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:05:24,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:05:24,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 13:05:24,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776122556] [2023-02-18 13:05:24,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:05:24,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:05:24,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:05:24,198 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) [2023-02-18 13:05:24,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 13:05:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 13:05:24,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 13:05:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 13:05:24,299 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 13:05:24,299 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 13:05:24,300 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 13:05:24,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 13:05:24,507 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 [2023-02-18 13:05:24,509 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-18 13:05:24,512 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 13:05:24,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 01:05:24 BoogieIcfgContainer [2023-02-18 13:05:24,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 13:05:24,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 13:05:24,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 13:05:24,538 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 13:05:24,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:05:23" (3/4) ... [2023-02-18 13:05:24,539 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-18 13:05:24,577 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 13:05:24,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 13:05:24,592 INFO L158 Benchmark]: Toolchain (without parser) took 2072.92ms. Allocated memory was 121.6MB in the beginning and 159.4MB in the end (delta: 37.7MB). Free memory was 88.3MB in the beginning and 132.2MB in the end (delta: -43.9MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2023-02-18 13:05:24,592 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 121.6MB. Free memory was 90.6MB in the beginning and 90.6MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 13:05:24,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.78ms. Allocated memory is still 121.6MB. Free memory was 88.0MB in the beginning and 77.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 13:05:24,593 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.59ms. Allocated memory is still 121.6MB. Free memory was 77.3MB in the beginning and 75.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 13:05:24,593 INFO L158 Benchmark]: Boogie Preprocessor took 32.09ms. Allocated memory is still 121.6MB. Free memory was 75.4MB in the beginning and 74.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 13:05:24,594 INFO L158 Benchmark]: RCFGBuilder took 363.01ms. Allocated memory is still 121.6MB. Free memory was 74.0MB in the beginning and 62.6MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-18 13:05:24,594 INFO L158 Benchmark]: TraceAbstraction took 1403.45ms. Allocated memory is still 121.6MB. Free memory was 61.9MB in the beginning and 54.2MB in the end (delta: 7.8MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2023-02-18 13:05:24,594 INFO L158 Benchmark]: Witness Printer took 54.46ms. Allocated memory was 121.6MB in the beginning and 159.4MB in the end (delta: 37.7MB). Free memory was 53.8MB in the beginning and 132.2MB in the end (delta: -78.4MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2023-02-18 13:05:24,597 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 121.6MB. Free memory was 90.6MB in the beginning and 90.6MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.78ms. Allocated memory is still 121.6MB. Free memory was 88.0MB in the beginning and 77.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.59ms. Allocated memory is still 121.6MB. Free memory was 77.3MB in the beginning and 75.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.09ms. Allocated memory is still 121.6MB. Free memory was 75.4MB in the beginning and 74.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 363.01ms. Allocated memory is still 121.6MB. Free memory was 74.0MB in the beginning and 62.6MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1403.45ms. Allocated memory is still 121.6MB. Free memory was 61.9MB in the beginning and 54.2MB in the end (delta: 7.8MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Witness Printer took 54.46ms. Allocated memory was 121.6MB in the beginning and 159.4MB in the end (delta: 37.7MB). Free memory was 53.8MB in the beginning and 132.2MB in the end (delta: -78.4MB). Peak memory consumption was 6.9MB. 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 sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [a={-1:0}, i=0, N=1, sum={4:0}] [L32] COND TRUE i