./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ss2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/ss2f.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 2bc09bd64500ce84828799e1b8f3bf98a7ee19cb7e359a47594550eda9829607 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 10:16:45,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 10:16:45,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 10:16:45,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 10:16:45,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 10:16:45,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 10:16:45,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 10:16:45,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 10:16:45,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 10:16:45,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 10:16:45,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 10:16:45,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 10:16:45,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 10:16:45,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 10:16:45,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 10:16:45,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 10:16:45,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 10:16:45,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 10:16:45,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 10:16:45,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 10:16:45,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 10:16:45,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 10:16:45,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 10:16:45,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 10:16:45,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 10:16:45,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 10:16:45,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 10:16:45,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 10:16:45,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 10:16:45,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 10:16:45,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 10:16:45,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 10:16:45,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 10:16:45,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 10:16:45,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 10:16:45,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 10:16:45,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 10:16:45,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 10:16:45,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 10:16:45,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 10:16:45,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 10:16:45,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 10:16:45,546 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 10:16:45,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 10:16:45,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 10:16:45,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 10:16:45,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 10:16:45,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 10:16:45,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 10:16:45,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 10:16:45,549 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 10:16:45,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 10:16:45,550 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 10:16:45,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 10:16:45,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 10:16:45,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 10:16:45,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 10:16:45,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 10:16:45,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 10:16:45,551 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 10:16:45,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 10:16:45,551 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 10:16:45,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 10:16:45,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 10:16:45,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 10:16:45,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 10:16:45,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 10:16:45,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 10:16:45,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 10:16:45,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 10:16:45,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 10:16:45,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 10:16:45,554 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 10:16:45,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 10:16:45,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 10:16:45,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 10:16:45,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bc09bd64500ce84828799e1b8f3bf98a7ee19cb7e359a47594550eda9829607 [2021-12-21 10:16:45,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 10:16:45,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 10:16:45,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 10:16:45,769 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 10:16:45,770 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 10:16:45,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ss2f.c [2021-12-21 10:16:45,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/125804aa3/3ed3388930c94095a4942ef721fe9d3a/FLAGb2e0c5540 [2021-12-21 10:16:46,125 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 10:16:46,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss2f.c [2021-12-21 10:16:46,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/125804aa3/3ed3388930c94095a4942ef721fe9d3a/FLAGb2e0c5540 [2021-12-21 10:16:46,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/125804aa3/3ed3388930c94095a4942ef721fe9d3a [2021-12-21 10:16:46,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 10:16:46,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 10:16:46,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 10:16:46,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 10:16:46,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 10:16:46,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:16:46" (1/1) ... [2021-12-21 10:16:46,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dcd5f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46, skipping insertion in model container [2021-12-21 10:16:46,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:16:46" (1/1) ... [2021-12-21 10:16:46,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 10:16:46,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 10:16:46,691 WARN L230 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/ss2f.c[587,600] [2021-12-21 10:16:46,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 10:16:46,711 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 10:16:46,719 WARN L230 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/ss2f.c[587,600] [2021-12-21 10:16:46,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 10:16:46,733 INFO L208 MainTranslator]: Completed translation [2021-12-21 10:16:46,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46 WrapperNode [2021-12-21 10:16:46,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 10:16:46,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 10:16:46,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 10:16:46,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 10:16:46,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46" (1/1) ... [2021-12-21 10:16:46,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46" (1/1) ... [2021-12-21 10:16:46,762 INFO L137 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 126 [2021-12-21 10:16:46,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 10:16:46,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 10:16:46,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 10:16:46,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 10:16:46,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46" (1/1) ... [2021-12-21 10:16:46,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46" (1/1) ... [2021-12-21 10:16:46,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46" (1/1) ... [2021-12-21 10:16:46,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46" (1/1) ... [2021-12-21 10:16:46,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46" (1/1) ... [2021-12-21 10:16:46,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46" (1/1) ... [2021-12-21 10:16:46,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46" (1/1) ... [2021-12-21 10:16:46,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 10:16:46,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 10:16:46,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 10:16:46,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 10:16:46,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46" (1/1) ... [2021-12-21 10:16:46,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 10:16:46,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:16:46,838 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) [2021-12-21 10:16:46,846 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 [2021-12-21 10:16:46,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 10:16:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 10:16:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 10:16:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 10:16:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 10:16:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 10:16:46,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 10:16:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 10:16:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 10:16:46,905 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 10:16:46,906 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 10:16:47,087 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 10:16:47,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 10:16:47,096 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-21 10:16:47,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:16:47 BoogieIcfgContainer [2021-12-21 10:16:47,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 10:16:47,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 10:16:47,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 10:16:47,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 10:16:47,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:16:46" (1/3) ... [2021-12-21 10:16:47,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598b944d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:16:47, skipping insertion in model container [2021-12-21 10:16:47,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:16:46" (2/3) ... [2021-12-21 10:16:47,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598b944d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:16:47, skipping insertion in model container [2021-12-21 10:16:47,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:16:47" (3/3) ... [2021-12-21 10:16:47,120 INFO L111 eAbstractionObserver]: Analyzing ICFG ss2f.c [2021-12-21 10:16:47,123 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 10:16:47,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 10:16:47,151 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 10:16:47,155 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 10:16:47,156 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 10:16:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 32 states have internal predecessors, (49), 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) [2021-12-21 10:16:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 10:16:47,182 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:16:47,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:16:47,183 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:16:47,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:16:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash -642180410, now seen corresponding path program 1 times [2021-12-21 10:16:47,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:16:47,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172000013] [2021-12-21 10:16:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:16:47,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:16:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:16:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 10:16:47,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:16:47,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172000013] [2021-12-21 10:16:47,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172000013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 10:16:47,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 10:16:47,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 10:16:47,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732807802] [2021-12-21 10:16:47,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 10:16:47,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 10:16:47,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:16:47,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 10:16:47,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 10:16:47,374 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 32 states have internal predecessors, (49), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2021-12-21 10:16:47,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:16:47,389 INFO L93 Difference]: Finished difference Result 62 states and 92 transitions. [2021-12-21 10:16:47,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 10:16:47,391 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2021-12-21 10:16:47,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:16:47,396 INFO L225 Difference]: With dead ends: 62 [2021-12-21 10:16:47,396 INFO L226 Difference]: Without dead ends: 29 [2021-12-21 10:16:47,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 10:16:47,404 INFO L933 BasicCegarLoop]: 40 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, 40 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 [2021-12-21 10:16:47,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 10:16:47,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-21 10:16:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-21 10:16:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 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) [2021-12-21 10:16:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-12-21 10:16:47,431 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 20 [2021-12-21 10:16:47,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:16:47,432 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-12-21 10:16:47,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2021-12-21 10:16:47,432 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-12-21 10:16:47,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 10:16:47,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:16:47,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:16:47,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 10:16:47,434 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:16:47,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:16:47,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1011332042, now seen corresponding path program 1 times [2021-12-21 10:16:47,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:16:47,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49468104] [2021-12-21 10:16:47,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:16:47,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:16:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 10:16:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 10:16:47,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 10:16:47,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49468104] [2021-12-21 10:16:47,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49468104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 10:16:47,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 10:16:47,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 10:16:47,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124590166] [2021-12-21 10:16:47,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 10:16:47,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 10:16:47,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 10:16:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 10:16:47,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 10:16:47,562 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-12-21 10:16:47,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 10:16:47,642 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2021-12-21 10:16:47,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 10:16:47,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-12-21 10:16:47,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 10:16:47,643 INFO L225 Difference]: With dead ends: 69 [2021-12-21 10:16:47,643 INFO L226 Difference]: Without dead ends: 47 [2021-12-21 10:16:47,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 10:16:47,645 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 53 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 10:16:47,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 19 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 10:16:47,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-12-21 10:16:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2021-12-21 10:16:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 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) [2021-12-21 10:16:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2021-12-21 10:16:47,651 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 20 [2021-12-21 10:16:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 10:16:47,651 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2021-12-21 10:16:47,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-12-21 10:16:47,651 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2021-12-21 10:16:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-21 10:16:47,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 10:16:47,652 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 10:16:47,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 10:16:47,653 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 10:16:47,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 10:16:47,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1890076394, now seen corresponding path program 1 times [2021-12-21 10:16:47,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 10:16:47,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761707128] [2021-12-21 10:16:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:16:47,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 10:16:47,687 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 10:16:47,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630683919] [2021-12-21 10:16:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 10:16:47,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:16:47,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 10:16:47,689 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) [2021-12-21 10:16:47,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 10:16:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 10:16:47,748 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 10:16:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 10:16:47,795 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 10:16:47,796 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 10:16:47,797 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 10:16:47,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 10:16:48,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 10:16:48,036 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-21 10:16:48,039 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 10:16:48,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 10:16:48 BoogieIcfgContainer [2021-12-21 10:16:48,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 10:16:48,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 10:16:48,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 10:16:48,072 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 10:16:48,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:16:47" (3/4) ... [2021-12-21 10:16:48,073 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-21 10:16:48,113 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 10:16:48,122 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 10:16:48,122 INFO L158 Benchmark]: Toolchain (without parser) took 1562.88ms. Allocated memory was 113.2MB in the beginning and 144.7MB in the end (delta: 31.5MB). Free memory was 86.4MB in the beginning and 90.7MB in the end (delta: -4.3MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2021-12-21 10:16:48,124 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 10:16:48,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.47ms. Allocated memory is still 113.2MB. Free memory was 86.1MB in the beginning and 89.1MB in the end (delta: -3.0MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-12-21 10:16:48,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.72ms. Allocated memory is still 113.2MB. Free memory was 89.1MB in the beginning and 87.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 10:16:48,125 INFO L158 Benchmark]: Boogie Preprocessor took 23.04ms. Allocated memory is still 113.2MB. Free memory was 87.3MB in the beginning and 85.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 10:16:48,125 INFO L158 Benchmark]: RCFGBuilder took 312.55ms. Allocated memory is still 113.2MB. Free memory was 85.9MB in the beginning and 73.8MB in the end (delta: 12.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-21 10:16:48,125 INFO L158 Benchmark]: TraceAbstraction took 971.93ms. Allocated memory was 113.2MB in the beginning and 144.7MB in the end (delta: 31.5MB). Free memory was 73.5MB in the beginning and 93.3MB in the end (delta: -19.8MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-12-21 10:16:48,126 INFO L158 Benchmark]: Witness Printer took 50.22ms. Allocated memory is still 144.7MB. Free memory was 93.3MB in the beginning and 90.7MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 10:16:48,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.47ms. Allocated memory is still 113.2MB. Free memory was 86.1MB in the beginning and 89.1MB in the end (delta: -3.0MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.72ms. Allocated memory is still 113.2MB. Free memory was 89.1MB in the beginning and 87.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.04ms. Allocated memory is still 113.2MB. Free memory was 87.3MB in the beginning and 85.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 312.55ms. Allocated memory is still 113.2MB. Free memory was 85.9MB in the beginning and 73.8MB in the end (delta: 12.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 971.93ms. Allocated memory was 113.2MB in the beginning and 144.7MB in the end (delta: 31.5MB). Free memory was 73.5MB in the beginning and 93.3MB in the end (delta: -19.8MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Witness Printer took 50.22ms. Allocated memory is still 144.7MB. Free memory was 93.3MB in the beginning and 90.7MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. 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={4:0}, i=0, N=1, sum={6:0}] [L32] COND TRUE i