./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/modpf.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/modpf.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 61f279515dc246fff43fc3ce83c4d2998ba719de7dc60a31302f8b9cd2dc8a22 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 10:03:43,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:03:43,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:03:43,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:03:43,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:03:43,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:03:43,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:03:43,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:03:43,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:03:43,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:03:43,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:03:43,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:03:43,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:03:43,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:03:43,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:03:43,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:03:43,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:03:43,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:03:43,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:03:43,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:03:43,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:03:43,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:03:43,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:03:43,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:03:43,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:03:43,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:03:43,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:03:43,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:03:43,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:03:43,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:03:43,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:03:43,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:03:43,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:03:43,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:03:43,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:03:43,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:03:43,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:03:43,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:03:43,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:03:43,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:03:43,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:03:43,743 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:03:43,782 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:03:43,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:03:43,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:03:43,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:03:43,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:03:43,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:03:43,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:03:43,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:03:43,785 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:03:43,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:03:43,786 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:03:43,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:03:43,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:03:43,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:03:43,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:03:43,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:03:43,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:03:43,787 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:03:43,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:03:43,788 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:03:43,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:03:43,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:03:43,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:03:43,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:03:43,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:03:43,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:03:43,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:03:43,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:03:43,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:03:43,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:03:43,790 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:03:43,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:03:43,795 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:03:43,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:03:43,796 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:03:43,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61f279515dc246fff43fc3ce83c4d2998ba719de7dc60a31302f8b9cd2dc8a22 [2023-02-15 10:03:44,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:03:44,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:03:44,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:03:44,085 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:03:44,086 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:03:44,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/modpf.c [2023-02-15 10:03:45,561 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:03:45,760 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:03:45,760 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/modpf.c [2023-02-15 10:03:45,766 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7061a3a0/f1cdd59d60b3498cae934862feb95996/FLAGe6b4902bf [2023-02-15 10:03:45,780 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7061a3a0/f1cdd59d60b3498cae934862feb95996 [2023-02-15 10:03:45,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:03:45,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:03:45,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:03:45,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:03:45,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:03:45,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:03:45" (1/1) ... [2023-02-15 10:03:45,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448b3915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:45, skipping insertion in model container [2023-02-15 10:03:45,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:03:45" (1/1) ... [2023-02-15 10:03:45,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:03:45,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:03:45,954 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/modpf.c[588,601] [2023-02-15 10:03:45,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:03:45,975 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:03:45,984 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/modpf.c[588,601] [2023-02-15 10:03:45,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:03:46,001 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:03:46,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46 WrapperNode [2023-02-15 10:03:46,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:03:46,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:03:46,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:03:46,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:03:46,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46" (1/1) ... [2023-02-15 10:03:46,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46" (1/1) ... [2023-02-15 10:03:46,028 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2023-02-15 10:03:46,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:03:46,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:03:46,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:03:46,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:03:46,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46" (1/1) ... [2023-02-15 10:03:46,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46" (1/1) ... [2023-02-15 10:03:46,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46" (1/1) ... [2023-02-15 10:03:46,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46" (1/1) ... [2023-02-15 10:03:46,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46" (1/1) ... [2023-02-15 10:03:46,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46" (1/1) ... [2023-02-15 10:03:46,047 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46" (1/1) ... [2023-02-15 10:03:46,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46" (1/1) ... [2023-02-15 10:03:46,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:03:46,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:03:46,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:03:46,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:03:46,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46" (1/1) ... [2023-02-15 10:03:46,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:03:46,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:03:46,076 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 10:03:46,078 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 10:03:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:03:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:03:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 10:03:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 10:03:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 10:03:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:03:46,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:03:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 10:03:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 10:03:46,160 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:03:46,162 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:03:46,345 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:03:46,350 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:03:46,350 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 10:03:46,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:03:46 BoogieIcfgContainer [2023-02-15 10:03:46,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:03:46,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:03:46,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:03:46,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:03:46,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:03:45" (1/3) ... [2023-02-15 10:03:46,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58fe57b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:03:46, skipping insertion in model container [2023-02-15 10:03:46,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:03:46" (2/3) ... [2023-02-15 10:03:46,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58fe57b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:03:46, skipping insertion in model container [2023-02-15 10:03:46,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:03:46" (3/3) ... [2023-02-15 10:03:46,358 INFO L112 eAbstractionObserver]: Analyzing ICFG modpf.c [2023-02-15 10:03:46,382 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:03:46,382 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 10:03:46,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:03:46,465 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;@6f0c044e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:03:46,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 10:03:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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 10:03:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 10:03:46,476 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:03:46,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:03:46,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:03:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:03:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2023-02-15 10:03:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:03:46,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010921235] [2023-02-15 10:03:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:03:46,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:03:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:03:46,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:03:46,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010921235] [2023-02-15 10:03:46,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 10:03:46,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347653464] [2023-02-15 10:03:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:03:46,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:03:46,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:03:46,659 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 10:03:46,660 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 10:03:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:03:46,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 10:03:46,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:03:46,773 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 10:03:46,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:03:46,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347653464] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:03:46,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:03:46,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 10:03:46,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750359525] [2023-02-15 10:03:46,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:03:46,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 10:03:46,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:03:46,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 10:03:46,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:03:46,821 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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 10:03:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:03:46,842 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2023-02-15 10:03:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 10:03:46,844 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 10:03:46,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:03:46,854 INFO L225 Difference]: With dead ends: 38 [2023-02-15 10:03:46,854 INFO L226 Difference]: Without dead ends: 17 [2023-02-15 10:03:46,856 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 10:03:46,862 INFO L413 NwaCegarLoop]: 24 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, 24 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 10:03:46,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:03:46,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-15 10:03:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-15 10:03:46,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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 10:03:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-02-15 10:03:46,890 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2023-02-15 10:03:46,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:03:46,891 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-02-15 10:03:46,891 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 10:03:46,891 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-02-15 10:03:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 10:03:46,892 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:03:46,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:03:46,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 10:03:47,098 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 10:03:47,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:03:47,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:03:47,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2023-02-15 10:03:47,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:03:47,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081856313] [2023-02-15 10:03:47,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:03:47,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:03:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:03:47,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:03:47,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081856313] [2023-02-15 10:03:47,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 10:03:47,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921557478] [2023-02-15 10:03:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:03:47,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:03:47,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:03:47,139 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 10:03:47,142 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 10:03:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:03:47,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 10:03:47,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:03:47,260 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 10:03:47,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:03:47,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921557478] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:03:47,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:03:47,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:03:47,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127718096] [2023-02-15 10:03:47,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:03:47,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:03:47,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:03:47,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:03:47,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:03:47,264 INFO L87 Difference]: Start difference. First operand 17 states and 19 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 10:03:47,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:03:47,297 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-02-15 10:03:47,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:03:47,298 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 10:03:47,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:03:47,299 INFO L225 Difference]: With dead ends: 37 [2023-02-15 10:03:47,299 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 10:03:47,299 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 10:03:47,300 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 31 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:03:47,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 15 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:03:47,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 10:03:47,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2023-02-15 10:03:47,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 10:03:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-02-15 10:03:47,309 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2023-02-15 10:03:47,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:03:47,310 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-02-15 10:03:47,310 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 10:03:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-02-15 10:03:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 10:03:47,311 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:03:47,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:03:47,318 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 10:03:47,517 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 10:03:47,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:03:47,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:03:47,518 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2023-02-15 10:03:47,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:03:47,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960518494] [2023-02-15 10:03:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:03:47,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:03:47,539 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:03:47,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681092407] [2023-02-15 10:03:47,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:03:47,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:03:47,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:03:47,541 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 10:03:47,560 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 10:03:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 10:03:47,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 10:03:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 10:03:47,633 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 10:03:47,634 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 10:03:47,635 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 10:03:47,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 10:03:47,843 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 10:03:47,846 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-15 10:03:47,848 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 10:03:47,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 10:03:47 BoogieIcfgContainer [2023-02-15 10:03:47,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 10:03:47,869 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 10:03:47,869 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 10:03:47,869 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 10:03:47,870 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:03:46" (3/4) ... [2023-02-15 10:03:47,871 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-15 10:03:47,901 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 10:03:47,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 10:03:47,902 INFO L158 Benchmark]: Toolchain (without parser) took 2118.02ms. Allocated memory is still 130.0MB. Free memory was 97.5MB in the beginning and 71.8MB in the end (delta: 25.7MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2023-02-15 10:03:47,902 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 79.4MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 10:03:47,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.34ms. Allocated memory is still 130.0MB. Free memory was 97.1MB in the beginning and 86.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 10:03:47,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.06ms. Allocated memory is still 130.0MB. Free memory was 86.6MB in the beginning and 84.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 10:03:47,904 INFO L158 Benchmark]: Boogie Preprocessor took 20.56ms. Allocated memory is still 130.0MB. Free memory was 84.9MB in the beginning and 83.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 10:03:47,904 INFO L158 Benchmark]: RCFGBuilder took 301.42ms. Allocated memory is still 130.0MB. Free memory was 83.7MB in the beginning and 72.3MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 10:03:47,904 INFO L158 Benchmark]: TraceAbstraction took 1515.18ms. Allocated memory is still 130.0MB. Free memory was 71.6MB in the beginning and 73.9MB in the end (delta: -2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 10:03:47,905 INFO L158 Benchmark]: Witness Printer took 32.45ms. Allocated memory is still 130.0MB. Free memory was 73.9MB in the beginning and 71.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 10:03:47,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 79.4MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.34ms. Allocated memory is still 130.0MB. Free memory was 97.1MB in the beginning and 86.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.06ms. Allocated memory is still 130.0MB. Free memory was 86.6MB in the beginning and 84.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.56ms. Allocated memory is still 130.0MB. Free memory was 84.9MB in the beginning and 83.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 301.42ms. Allocated memory is still 130.0MB. Free memory was 83.7MB in the beginning and 72.3MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1515.18ms. Allocated memory is still 130.0MB. Free memory was 71.6MB in the beginning and 73.9MB in the end (delta: -2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 32.45ms. Allocated memory is still 130.0MB. Free memory was 73.9MB in the beginning and 71.8MB 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] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [a={-1:0}, i=0, N=1, sum={4:0}] [L32] COND TRUE i