./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/prefixsum_iter.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/verifythis/prefixsum_iter.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 4cd641fa41c29ed0240eed782d3555502472fe8bb63d504547076d8eeefa2c0d --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:58:37,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:58:37,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:58:37,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:58:37,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:58:37,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:58:37,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:58:37,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:58:37,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:58:37,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:58:37,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:58:37,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:58:37,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:58:37,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:58:37,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:58:37,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:58:37,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:58:37,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:58:37,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:58:37,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:58:37,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:58:37,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:58:37,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:58:37,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:58:37,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:58:37,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:58:37,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:58:37,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:58:37,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:58:37,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:58:37,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:58:37,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:58:37,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:58:37,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:58:37,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:58:37,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:58:37,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:58:37,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:58:37,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:58:37,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:58:37,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:58:37,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:58:37,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:58:37,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:58:37,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:58:37,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:58:37,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:58:37,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:58:37,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:58:37,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:58:37,778 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:58:37,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:58:37,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:58:37,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:58:37,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:58:37,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:58:37,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:58:37,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:58:37,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:58:37,779 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:58:37,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:58:37,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:58:37,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:58:37,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:58:37,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:58:37,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:58:37,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:58:37,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:58:37,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:58:37,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:58:37,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:58:37,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:58:37,781 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:58:37,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:58:37,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:58:37,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:58:37,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cd641fa41c29ed0240eed782d3555502472fe8bb63d504547076d8eeefa2c0d [2021-12-15 10:58:37,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:58:38,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:58:38,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:58:38,004 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:58:38,005 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:58:38,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/prefixsum_iter.c [2021-12-15 10:58:38,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52a04cd1/2e923f7986004887aeb34c20da405db3/FLAGf39117b3e [2021-12-15 10:58:38,428 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:58:38,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_iter.c [2021-12-15 10:58:38,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52a04cd1/2e923f7986004887aeb34c20da405db3/FLAGf39117b3e [2021-12-15 10:58:38,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52a04cd1/2e923f7986004887aeb34c20da405db3 [2021-12-15 10:58:38,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:58:38,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:58:38,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:58:38,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:58:38,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:58:38,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:58:38" (1/1) ... [2021-12-15 10:58:38,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a4b3b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:38, skipping insertion in model container [2021-12-15 10:58:38,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:58:38" (1/1) ... [2021-12-15 10:58:38,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:58:38,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:58:39,020 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/verifythis/prefixsum_iter.c[526,539] [2021-12-15 10:58:39,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:58:39,071 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:58:39,083 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/verifythis/prefixsum_iter.c[526,539] [2021-12-15 10:58:39,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:58:39,120 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:58:39,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:39 WrapperNode [2021-12-15 10:58:39,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:58:39,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:58:39,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:58:39,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:58:39,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:39" (1/1) ... [2021-12-15 10:58:39,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:39" (1/1) ... [2021-12-15 10:58:39,163 INFO L137 Inliner]: procedures = 22, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 125 [2021-12-15 10:58:39,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:58:39,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:58:39,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:58:39,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:58:39,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:39" (1/1) ... [2021-12-15 10:58:39,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:39" (1/1) ... [2021-12-15 10:58:39,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:39" (1/1) ... [2021-12-15 10:58:39,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:39" (1/1) ... [2021-12-15 10:58:39,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:39" (1/1) ... [2021-12-15 10:58:39,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:39" (1/1) ... [2021-12-15 10:58:39,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:39" (1/1) ... [2021-12-15 10:58:39,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:58:39,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:58:39,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:58:39,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:58:39,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:39" (1/1) ... [2021-12-15 10:58:39,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:58:39,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:58:39,237 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) [2021-12-15 10:58:39,244 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 [2021-12-15 10:58:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:58:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 10:58:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 10:58:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:58:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 10:58:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 10:58:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:58:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:58:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 10:58:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-15 10:58:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-15 10:58:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:58:39,360 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:58:39,362 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:58:41,638 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:58:41,643 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:58:41,643 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-15 10:58:41,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:58:41 BoogieIcfgContainer [2021-12-15 10:58:41,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:58:41,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:58:41,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:58:41,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:58:41,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:58:38" (1/3) ... [2021-12-15 10:58:41,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a587b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:58:41, skipping insertion in model container [2021-12-15 10:58:41,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:39" (2/3) ... [2021-12-15 10:58:41,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a587b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:58:41, skipping insertion in model container [2021-12-15 10:58:41,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:58:41" (3/3) ... [2021-12-15 10:58:41,653 INFO L111 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2021-12-15 10:58:41,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:58:41,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:58:41,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:58:41,692 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 [2021-12-15 10:58:41,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:58:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-15 10:58:41,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-15 10:58:41,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:58:41,707 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2021-12-15 10:58:41,707 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:58:41,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:58:41,711 INFO L85 PathProgramCache]: Analyzing trace with hash -750888739, now seen corresponding path program 1 times [2021-12-15 10:58:41,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:58:41,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555337080] [2021-12-15 10:58:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:58:41,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:58:41,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:58:41,755 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 10:58:41,759 INFO L158 Benchmark]: Toolchain (without parser) took 2894.79ms. Allocated memory is still 121.6MB. Free memory was 96.9MB in the beginning and 71.6MB in the end (delta: 25.3MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2021-12-15 10:58:41,759 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:58:41,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.84ms. Allocated memory is still 121.6MB. Free memory was 96.7MB in the beginning and 97.9MB in the end (delta: -1.2MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-12-15 10:58:41,760 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.48ms. Allocated memory is still 121.6MB. Free memory was 97.9MB in the beginning and 95.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:58:41,760 INFO L158 Benchmark]: Boogie Preprocessor took 38.56ms. Allocated memory is still 121.6MB. Free memory was 95.8MB in the beginning and 94.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:58:41,761 INFO L158 Benchmark]: RCFGBuilder took 2440.50ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 81.1MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-15 10:58:41,761 INFO L158 Benchmark]: TraceAbstraction took 112.15ms. Allocated memory is still 121.6MB. Free memory was 80.6MB in the beginning and 71.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:58:41,763 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.84ms. Allocated memory is still 121.6MB. Free memory was 96.7MB in the beginning and 97.9MB in the end (delta: -1.2MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.48ms. Allocated memory is still 121.6MB. Free memory was 97.9MB in the beginning and 95.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.56ms. Allocated memory is still 121.6MB. Free memory was 95.8MB in the beginning and 94.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2440.50ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 81.1MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 112.15ms. Allocated memory is still 121.6MB. Free memory was 80.6MB in the beginning and 71.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 10:58:41,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/verifythis/prefixsum_iter.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 4cd641fa41c29ed0240eed782d3555502472fe8bb63d504547076d8eeefa2c0d --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:58:43,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:58:43,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:58:43,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:58:43,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:58:43,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:58:43,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:58:43,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:58:43,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:58:43,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:58:43,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:58:43,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:58:43,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:58:43,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:58:43,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:58:43,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:58:43,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:58:43,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:58:43,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:58:43,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:58:43,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:58:43,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:58:43,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:58:43,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:58:43,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:58:43,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:58:43,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:58:43,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:58:43,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:58:43,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:58:43,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:58:43,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:58:43,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:58:43,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:58:43,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:58:43,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:58:43,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:58:43,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:58:43,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:58:43,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:58:43,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:58:43,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:58:43,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:58:43,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:58:43,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:58:43,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:58:43,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:58:43,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:58:43,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:58:43,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:58:43,585 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:58:43,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:58:43,586 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:58:43,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:58:43,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:58:43,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:58:43,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:58:43,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:58:43,587 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:58:43,587 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:58:43,587 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:58:43,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:58:43,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:58:43,588 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:58:43,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:58:43,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:58:43,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:58:43,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:58:43,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:58:43,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:58:43,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:58:43,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:58:43,596 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:58:43,596 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:58:43,597 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:58:43,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:58:43,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:58:43,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:58:43,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:58:43,598 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cd641fa41c29ed0240eed782d3555502472fe8bb63d504547076d8eeefa2c0d [2021-12-15 10:58:43,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:58:43,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:58:43,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:58:43,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:58:43,854 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:58:43,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/prefixsum_iter.c [2021-12-15 10:58:43,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca01541a9/724f8f252723479281ab74b540255404/FLAG1840800f7 [2021-12-15 10:58:44,266 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:58:44,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_iter.c [2021-12-15 10:58:44,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca01541a9/724f8f252723479281ab74b540255404/FLAG1840800f7 [2021-12-15 10:58:44,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca01541a9/724f8f252723479281ab74b540255404 [2021-12-15 10:58:44,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:58:44,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:58:44,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:58:44,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:58:44,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:58:44,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:58:44" (1/1) ... [2021-12-15 10:58:44,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2372c148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44, skipping insertion in model container [2021-12-15 10:58:44,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:58:44" (1/1) ... [2021-12-15 10:58:44,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:58:44,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:58:44,813 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/verifythis/prefixsum_iter.c[526,539] [2021-12-15 10:58:44,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:58:44,884 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:58:44,897 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/verifythis/prefixsum_iter.c[526,539] [2021-12-15 10:58:44,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:58:44,949 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:58:44,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44 WrapperNode [2021-12-15 10:58:44,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:58:44,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:58:44,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:58:44,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:58:44,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44" (1/1) ... [2021-12-15 10:58:44,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44" (1/1) ... [2021-12-15 10:58:44,997 INFO L137 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 122 [2021-12-15 10:58:44,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:58:44,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:58:44,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:58:44,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:58:45,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44" (1/1) ... [2021-12-15 10:58:45,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44" (1/1) ... [2021-12-15 10:58:45,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44" (1/1) ... [2021-12-15 10:58:45,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44" (1/1) ... [2021-12-15 10:58:45,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44" (1/1) ... [2021-12-15 10:58:45,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44" (1/1) ... [2021-12-15 10:58:45,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44" (1/1) ... [2021-12-15 10:58:45,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:58:45,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:58:45,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:58:45,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:58:45,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44" (1/1) ... [2021-12-15 10:58:45,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:58:45,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:58:45,068 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) [2021-12-15 10:58:45,088 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 [2021-12-15 10:58:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:58:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:58:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 10:58:45,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 10:58:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 10:58:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 10:58:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:58:45,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:58:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-15 10:58:45,101 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-15 10:58:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:58:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 10:58:45,179 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:58:45,180 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:58:45,391 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:58:45,395 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:58:45,396 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-15 10:58:45,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:58:45 BoogieIcfgContainer [2021-12-15 10:58:45,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:58:45,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:58:45,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:58:45,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:58:45,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:58:44" (1/3) ... [2021-12-15 10:58:45,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a5cfb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:58:45, skipping insertion in model container [2021-12-15 10:58:45,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:44" (2/3) ... [2021-12-15 10:58:45,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a5cfb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:58:45, skipping insertion in model container [2021-12-15 10:58:45,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:58:45" (3/3) ... [2021-12-15 10:58:45,404 INFO L111 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2021-12-15 10:58:45,422 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:58:45,422 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:58:45,452 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:58:45,457 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 [2021-12-15 10:58:45,457 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:58:45,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-15 10:58:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-15 10:58:45,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:58:45,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2021-12-15 10:58:45,476 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:58:45,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:58:45,485 INFO L85 PathProgramCache]: Analyzing trace with hash -750888739, now seen corresponding path program 1 times [2021-12-15 10:58:45,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:58:45,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209796989] [2021-12-15 10:58:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:58:45,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:58:45,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:58:45,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 10:58:45,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 10:58:45,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 10:58:45,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 10:58:45,730 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 10:58:45,734 INFO L158 Benchmark]: Toolchain (without parser) took 1022.69ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 33.4MB in the beginning and 47.9MB in the end (delta: -14.4MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2021-12-15 10:58:45,735 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.8MB in the beginning and 36.8MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:58:45,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.13ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 33.3MB in the beginning and 55.0MB in the end (delta: -21.7MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2021-12-15 10:58:45,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.03ms. Allocated memory is still 73.4MB. Free memory was 55.0MB in the beginning and 53.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:58:45,737 INFO L158 Benchmark]: Boogie Preprocessor took 45.35ms. Allocated memory is still 73.4MB. Free memory was 53.2MB in the beginning and 51.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:58:45,737 INFO L158 Benchmark]: RCFGBuilder took 354.63ms. Allocated memory is still 73.4MB. Free memory was 51.3MB in the beginning and 37.8MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 10:58:45,737 INFO L158 Benchmark]: TraceAbstraction took 332.89ms. Allocated memory is still 73.4MB. Free memory was 37.4MB in the beginning and 47.9MB in the end (delta: -10.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:58:45,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.8MB in the beginning and 36.8MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.13ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 33.3MB in the beginning and 55.0MB in the end (delta: -21.7MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.03ms. Allocated memory is still 73.4MB. Free memory was 55.0MB in the beginning and 53.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.35ms. Allocated memory is still 73.4MB. Free memory was 53.2MB in the beginning and 51.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 354.63ms. Allocated memory is still 73.4MB. Free memory was 51.3MB in the beginning and 37.8MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 332.89ms. Allocated memory is still 73.4MB. Free memory was 37.4MB in the beginning and 47.9MB in the end (delta: -10.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 10:58:45,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable