./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/array_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/loop-acceleration/array_1-2.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 0edc3db25587eb2dcb44164977e2a8fa1ed85700 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 10:37:13,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 10:37:13,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 10:37:13,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 10:37:13,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 10:37:13,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 10:37:13,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 10:37:13,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 10:37:13,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 10:37:13,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 10:37:13,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 10:37:13,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 10:37:13,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 10:37:13,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 10:37:13,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 10:37:13,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 10:37:13,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 10:37:13,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 10:37:13,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 10:37:13,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 10:37:13,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 10:37:13,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 10:37:13,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 10:37:13,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 10:37:13,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 10:37:13,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 10:37:13,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 10:37:13,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 10:37:13,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 10:37:13,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 10:37:13,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 10:37:13,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 10:37:13,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 10:37:13,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 10:37:13,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 10:37:13,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 10:37:13,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 10:37:13,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 10:37:13,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 10:37:13,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 10:37:13,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 10:37:13,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 10:37:13,881 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 10:37:13,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 10:37:13,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 10:37:13,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 10:37:13,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 10:37:13,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 10:37:13,885 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 10:37:13,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 10:37:13,886 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 10:37:13,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 10:37:13,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 10:37:13,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 10:37:13,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 10:37:13,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 10:37:13,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 10:37:13,888 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 10:37:13,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 10:37:13,888 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 10:37:13,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 10:37:13,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 10:37:13,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 10:37:13,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 10:37:13,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:37:13,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 10:37:13,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 10:37:13,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 10:37:13,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 10:37:13,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 10:37:13,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 10:37:13,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 10:37:13,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0edc3db25587eb2dcb44164977e2a8fa1ed85700 [2021-08-29 10:37:14,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 10:37:14,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 10:37:14,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 10:37:14,264 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 10:37:14,265 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 10:37:14,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/array_1-2.c [2021-08-29 10:37:14,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1006b56ad/3a809501191d4412a38d0d43142b1b32/FLAG39aceff5f [2021-08-29 10:37:14,766 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 10:37:14,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array_1-2.c [2021-08-29 10:37:14,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1006b56ad/3a809501191d4412a38d0d43142b1b32/FLAG39aceff5f [2021-08-29 10:37:15,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1006b56ad/3a809501191d4412a38d0d43142b1b32 [2021-08-29 10:37:15,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 10:37:15,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 10:37:15,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 10:37:15,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 10:37:15,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 10:37:15,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:37:15" (1/1) ... [2021-08-29 10:37:15,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25cb7413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15, skipping insertion in model container [2021-08-29 10:37:15,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:37:15" (1/1) ... [2021-08-29 10:37:15,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 10:37:15,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 10:37:15,327 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array_1-2.c[321,334] [2021-08-29 10:37:15,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:37:15,342 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 10:37:15,352 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array_1-2.c[321,334] [2021-08-29 10:37:15,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:37:15,366 INFO L208 MainTranslator]: Completed translation [2021-08-29 10:37:15,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15 WrapperNode [2021-08-29 10:37:15,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 10:37:15,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 10:37:15,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 10:37:15,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 10:37:15,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15" (1/1) ... [2021-08-29 10:37:15,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15" (1/1) ... [2021-08-29 10:37:15,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 10:37:15,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 10:37:15,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 10:37:15,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 10:37:15,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15" (1/1) ... [2021-08-29 10:37:15,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15" (1/1) ... [2021-08-29 10:37:15,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15" (1/1) ... [2021-08-29 10:37:15,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15" (1/1) ... [2021-08-29 10:37:15,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15" (1/1) ... [2021-08-29 10:37:15,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15" (1/1) ... [2021-08-29 10:37:15,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15" (1/1) ... [2021-08-29 10:37:15,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 10:37:15,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 10:37:15,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 10:37:15,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 10:37:15,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15" (1/1) ... [2021-08-29 10:37:15,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:37:15,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:37:15,482 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) [2021-08-29 10:37:15,508 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 [2021-08-29 10:37:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 10:37:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 10:37:15,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 10:37:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 10:37:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 10:37:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 10:37:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 10:37:15,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 10:37:15,674 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 10:37:15,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:37:15 BoogieIcfgContainer [2021-08-29 10:37:15,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 10:37:15,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 10:37:15,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 10:37:15,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 10:37:15,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:37:15" (1/3) ... [2021-08-29 10:37:15,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbed745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:37:15, skipping insertion in model container [2021-08-29 10:37:15,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:37:15" (2/3) ... [2021-08-29 10:37:15,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbed745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:37:15, skipping insertion in model container [2021-08-29 10:37:15,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:37:15" (3/3) ... [2021-08-29 10:37:15,683 INFO L111 eAbstractionObserver]: Analyzing ICFG array_1-2.c [2021-08-29 10:37:15,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 10:37:15,687 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 10:37:15,733 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 10:37:15,740 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-29 10:37:15,741 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 10:37:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-08-29 10:37:15,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 10:37:15,757 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:37:15,758 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 10:37:15,759 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:37:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:37:15,764 INFO L82 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-08-29 10:37:15,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:37:15,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153338054] [2021-08-29 10:37:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:37:15,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:37:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:37:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:37:15,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:37:15,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153338054] [2021-08-29 10:37:15,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153338054] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:37:15,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 10:37:15,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 10:37:15,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524476732] [2021-08-29 10:37:15,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 10:37:15,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:37:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 10:37:16,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 10:37:16,002 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-29 10:37:16,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:37:16,037 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-08-29 10:37:16,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 10:37:16,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-08-29 10:37:16,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:37:16,044 INFO L225 Difference]: With dead ends: 22 [2021-08-29 10:37:16,045 INFO L226 Difference]: Without dead ends: 10 [2021-08-29 10:37:16,047 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 10:37:16,049 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.32ms IncrementalHoareTripleChecker+Time [2021-08-29 10:37:16,050 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 23.32ms Time] [2021-08-29 10:37:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-08-29 10:37:16,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-08-29 10:37:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-08-29 10:37:16,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-08-29 10:37:16,074 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-08-29 10:37:16,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:37:16,074 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-08-29 10:37:16,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-29 10:37:16,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-08-29 10:37:16,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 10:37:16,075 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:37:16,075 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 10:37:16,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 10:37:16,075 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:37:16,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:37:16,076 INFO L82 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2021-08-29 10:37:16,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:37:16,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440100338] [2021-08-29 10:37:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:37:16,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:37:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:37:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:37:16,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:37:16,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440100338] [2021-08-29 10:37:16,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440100338] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 10:37:16,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203525614] [2021-08-29 10:37:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:37:16,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:37:16,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:37:16,116 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) [2021-08-29 10:37:16,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 10:37:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:37:16,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 10:37:16,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 10:37:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:37:16,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 10:37:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:37:16,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203525614] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 10:37:16,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 10:37:16,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-08-29 10:37:16,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309348298] [2021-08-29 10:37:16,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 10:37:16,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:37:16,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 10:37:16,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-29 10:37:16,317 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:37:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:37:16,359 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-08-29 10:37:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 10:37:16,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 10:37:16,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:37:16,360 INFO L225 Difference]: With dead ends: 19 [2021-08-29 10:37:16,360 INFO L226 Difference]: Without dead ends: 15 [2021-08-29 10:37:16,361 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 22.76ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-29 10:37:16,362 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.58ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.75ms IncrementalHoareTripleChecker+Time [2021-08-29 10:37:16,362 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 41 Unknown, 0 Unchecked, 0.58ms Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 35.75ms Time] [2021-08-29 10:37:16,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-29 10:37:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-29 10:37:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:37:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-08-29 10:37:16,366 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-08-29 10:37:16,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:37:16,367 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-08-29 10:37:16,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:37:16,367 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-08-29 10:37:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 10:37:16,368 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:37:16,368 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2021-08-29 10:37:16,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 10:37:16,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:37:16,592 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:37:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:37:16,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 2 times [2021-08-29 10:37:16,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:37:16,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145660120] [2021-08-29 10:37:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:37:16,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:37:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:37:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:37:16,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:37:16,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145660120] [2021-08-29 10:37:16,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145660120] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 10:37:16,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688449004] [2021-08-29 10:37:16,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 10:37:16,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:37:16,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:37:16,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 10:37:16,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 10:37:16,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 10:37:16,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 10:37:16,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-29 10:37:16,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 10:37:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:37:16,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 10:37:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:37:16,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688449004] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 10:37:16,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 10:37:16,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-08-29 10:37:16,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194648654] [2021-08-29 10:37:16,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-29 10:37:16,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:37:16,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-29 10:37:16,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-29 10:37:16,920 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:37:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:37:16,968 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-08-29 10:37:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-29 10:37:16,969 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-29 10:37:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:37:16,970 INFO L225 Difference]: With dead ends: 31 [2021-08-29 10:37:16,970 INFO L226 Difference]: Without dead ends: 27 [2021-08-29 10:37:16,971 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 68.19ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-29 10:37:16,973 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.34ms IncrementalHoareTripleChecker+Time [2021-08-29 10:37:16,975 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 39.34ms Time] [2021-08-29 10:37:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-29 10:37:16,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-08-29 10:37:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:37:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-08-29 10:37:16,985 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2021-08-29 10:37:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:37:16,986 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-08-29 10:37:16,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:37:16,986 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-08-29 10:37:16,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-29 10:37:16,987 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:37:16,987 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2021-08-29 10:37:17,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 10:37:17,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-29 10:37:17,205 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:37:17,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:37:17,206 INFO L82 PathProgramCache]: Analyzing trace with hash -95702975, now seen corresponding path program 3 times [2021-08-29 10:37:17,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:37:17,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289424124] [2021-08-29 10:37:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:37:17,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:37:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:37:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:37:17,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:37:17,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289424124] [2021-08-29 10:37:17,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289424124] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 10:37:17,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165111214] [2021-08-29 10:37:17,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 10:37:17,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:37:17,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:37:17,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 10:37:17,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 10:37:17,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-29 10:37:17,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 10:37:17,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 10:37:17,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 10:37:17,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-08-29 10:37:17,637 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-08-29 10:37:17,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 32 [2021-08-29 10:37:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-08-29 10:37:17,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 10:37:17,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165111214] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:37:17,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 10:37:17,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2021-08-29 10:37:17,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981922809] [2021-08-29 10:37:17,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 10:37:17,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:37:17,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 10:37:17,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-08-29 10:37:17,685 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-08-29 10:37:17,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:37:17,701 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-08-29 10:37:17,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 10:37:17,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 26 [2021-08-29 10:37:17,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:37:17,703 INFO L225 Difference]: With dead ends: 27 [2021-08-29 10:37:17,704 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 10:37:17,705 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 119.29ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-08-29 10:37:17,707 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 7.66ms IncrementalHoareTripleChecker+Time [2021-08-29 10:37:17,708 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.50ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 10 Unchecked, 7.66ms Time] [2021-08-29 10:37:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 10:37:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 10:37:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-29 10:37:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 10:37:17,710 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-08-29 10:37:17,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:37:17,710 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 10:37:17,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-08-29 10:37:17,711 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 10:37:17,711 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 10:37:17,713 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 10:37:17,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 10:37:17,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:37:17,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 10:37:17,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:37:17,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:37:17,960 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 10:37:17,960 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-08-29 10:37:17,960 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 10:37:17,961 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 10:37:17,961 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 10:37:17,961 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-08-29 10:37:17,961 INFO L858 garLoopResultBuilder]: For program point L16-2(lines 16 18) no Hoare annotation was computed. [2021-08-29 10:37:17,961 INFO L854 garLoopResultBuilder]: At program point L16-3(lines 16 18) the Hoare annotation is: (or (= ULTIMATE.start_main_~i~0 0) (exists ((v_ULTIMATE.start_main_~i~0_21 Int)) (and (<= ULTIMATE.start_main_~i~0 (+ v_ULTIMATE.start_main_~i~0_21 1)) (< v_ULTIMATE.start_main_~i~0_21 1024) (= v_ULTIMATE.start_main_~i~0_21 (select (select |#memory_int| |ULTIMATE.start_main_~#A~0.base|) (+ (* v_ULTIMATE.start_main_~i~0_21 4) |ULTIMATE.start_main_~#A~0.offset|)))))) [2021-08-29 10:37:17,961 INFO L858 garLoopResultBuilder]: For program point L16-4(lines 16 18) no Hoare annotation was computed. [2021-08-29 10:37:17,961 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 21) no Hoare annotation was computed. [2021-08-29 10:37:17,962 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-08-29 10:37:17,962 INFO L861 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-08-29 10:37:17,965 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 10:37:17,972 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:17,973 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:17,973 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:17,973 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:17,977 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:17,978 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:17,978 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:17,978 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:17,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:37:17 BoogieIcfgContainer [2021-08-29 10:37:17,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 10:37:17,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 10:37:17,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 10:37:17,980 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 10:37:17,980 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:37:15" (3/4) ... [2021-08-29 10:37:17,982 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 10:37:17,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-29 10:37:17,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 10:37:17,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-29 10:37:17,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 10:37:18,006 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: i == 0 || (\exists v_ULTIMATE.start_main_~i~0_21 : int :: (i <= v_ULTIMATE.start_main_~i~0_21 + 1 && v_ULTIMATE.start_main_~i~0_21 < 1024) && v_ULTIMATE.start_main_~i~0_21 == unknown-#memory_int-unknown[A][v_ULTIMATE.start_main_~i~0_21 * 4 + A]) [2021-08-29 10:37:18,010 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 10:37:18,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 10:37:18,010 INFO L158 Benchmark]: Toolchain (without parser) took 2823.43ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 45.7MB in the beginning and 32.7MB in the end (delta: 12.9MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2021-08-29 10:37:18,011 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 65.0MB. Free memory was 45.9MB in the beginning and 45.9MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:37:18,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.36ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 36.2MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 10:37:18,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.14ms. Allocated memory is still 65.0MB. Free memory was 36.2MB in the beginning and 48.4MB in the end (delta: -12.2MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2021-08-29 10:37:18,011 INFO L158 Benchmark]: Boogie Preprocessor took 35.34ms. Allocated memory is still 65.0MB. Free memory was 48.4MB in the beginning and 47.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:37:18,012 INFO L158 Benchmark]: RCFGBuilder took 225.15ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 39.1MB in the end (delta: 8.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 10:37:18,012 INFO L158 Benchmark]: TraceAbstraction took 2301.63ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 38.6MB in the beginning and 34.8MB in the end (delta: 3.7MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-08-29 10:37:18,012 INFO L158 Benchmark]: Witness Printer took 30.50ms. Allocated memory is still 79.7MB. Free memory was 34.8MB in the beginning and 32.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 10:37:18,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 65.0MB. Free memory was 45.9MB in the beginning and 45.9MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 179.36ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 36.2MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.14ms. Allocated memory is still 65.0MB. Free memory was 36.2MB in the beginning and 48.4MB in the end (delta: -12.2MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.34ms. Allocated memory is still 65.0MB. Free memory was 48.4MB in the beginning and 47.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 225.15ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 39.1MB in the end (delta: 8.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2301.63ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 38.6MB in the beginning and 34.8MB in the end (delta: 3.7MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Witness Printer took 30.50ms. Allocated memory is still 79.7MB. Free memory was 34.8MB in the beginning and 32.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2234.10ms, OverallIterations: 4, TraceHistogramMax: 10, EmptinessCheckTime: 9.95ms, AutomataDifference: 208.98ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 22.62ms, InitialAbstractionConstructionTime: 8.77ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 106.07ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 80.93ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 10 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108 IncrementalHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 0 mSDtfsCounter, 108 mSolverCounterSat, 2.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 214.95ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 24.35ms AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 13 NumberOfFragments, 26 HoareAnnotationTreeSize, 2 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 9.74ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 7.80ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 51.94ms SsaConstructionTime, 130.89ms SatisfiabilityAnalysisTime, 882.87ms InterpolantComputationTime, 102 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 2 QuantifiedInterpolants, 285 SizeOfPredicates, 6 NumberOfNonLiveVariables, 181 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 100/251 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant [2021-08-29 10:37:18,019 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:18,019 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:18,019 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:18,019 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:18,019 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:18,019 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:18,020 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] [2021-08-29 10:37:18,020 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_21,QUANTIFIED] Derived loop invariant: i == 0 || (\exists v_ULTIMATE.start_main_~i~0_21 : int :: (i <= v_ULTIMATE.start_main_~i~0_21 + 1 && v_ULTIMATE.start_main_~i~0_21 < 1024) && v_ULTIMATE.start_main_~i~0_21 == unknown-#memory_int-unknown[A][v_ULTIMATE.start_main_~i~0_21 * 4 + A]) RESULT: Ultimate proved your program to be correct! [2021-08-29 10:37:18,046 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...