./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i -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 dc63a805379d435830d30b53773a27b22aa93e78 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 14:19:02,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 14:19:02,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 14:19:02,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 14:19:02,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 14:19:02,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 14:19:02,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 14:19:02,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 14:19:02,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 14:19:02,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 14:19:02,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 14:19:02,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 14:19:02,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 14:19:02,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 14:19:02,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 14:19:02,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 14:19:02,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 14:19:02,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 14:19:02,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 14:19:02,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 14:19:02,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 14:19:02,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 14:19:02,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 14:19:02,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 14:19:02,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 14:19:02,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 14:19:02,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 14:19:02,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 14:19:02,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 14:19:02,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 14:19:02,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 14:19:02,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 14:19:02,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 14:19:02,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 14:19:02,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 14:19:02,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 14:19:02,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 14:19:02,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 14:19:02,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 14:19:02,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 14:19:02,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 14:19:02,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 14:19:02,367 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 14:19:02,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 14:19:02,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 14:19:02,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 14:19:02,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 14:19:02,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 14:19:02,371 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 14:19:02,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 14:19:02,372 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 14:19:02,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 14:19:02,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 14:19:02,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 14:19:02,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 14:19:02,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 14:19:02,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 14:19:02,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 14:19:02,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 14:19:02,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 14:19:02,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 14:19:02,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 14:19:02,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 14:19:02,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 14:19:02,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 14:19:02,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 14:19:02,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 14:19:02,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 14:19:02,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 14:19:02,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 14:19:02,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 14:19:02,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 14:19:02,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc63a805379d435830d30b53773a27b22aa93e78 [2021-08-25 14:19:02,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 14:19:02,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 14:19:02,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 14:19:02,733 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 14:19:02,733 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 14:19:02,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2021-08-25 14:19:02,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b54ceda38/f3a2f18d3421418fa90c67684005f6d7/FLAG61164989a [2021-08-25 14:19:03,239 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 14:19:03,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2021-08-25 14:19:03,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b54ceda38/f3a2f18d3421418fa90c67684005f6d7/FLAG61164989a [2021-08-25 14:19:03,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b54ceda38/f3a2f18d3421418fa90c67684005f6d7 [2021-08-25 14:19:03,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 14:19:03,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 14:19:03,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 14:19:03,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 14:19:03,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 14:19:03,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 02:19:03" (1/1) ... [2021-08-25 14:19:03,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d7146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03, skipping insertion in model container [2021-08-25 14:19:03,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 02:19:03" (1/1) ... [2021-08-25 14:19:03,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 14:19:03,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 14:19:03,787 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/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2021-08-25 14:19:03,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 14:19:03,820 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 14:19:03,834 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/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2021-08-25 14:19:03,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 14:19:03,884 INFO L208 MainTranslator]: Completed translation [2021-08-25 14:19:03,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03 WrapperNode [2021-08-25 14:19:03,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 14:19:03,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 14:19:03,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 14:19:03,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 14:19:03,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03" (1/1) ... [2021-08-25 14:19:03,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03" (1/1) ... [2021-08-25 14:19:03,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 14:19:03,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 14:19:03,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 14:19:03,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 14:19:03,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03" (1/1) ... [2021-08-25 14:19:03,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03" (1/1) ... [2021-08-25 14:19:03,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03" (1/1) ... [2021-08-25 14:19:03,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03" (1/1) ... [2021-08-25 14:19:03,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03" (1/1) ... [2021-08-25 14:19:03,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03" (1/1) ... [2021-08-25 14:19:03,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03" (1/1) ... [2021-08-25 14:19:03,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 14:19:03,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 14:19:03,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 14:19:03,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 14:19:03,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03" (1/1) ... [2021-08-25 14:19:03,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 14:19:03,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 14:19:03,994 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) [2021-08-25 14:19:04,020 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 [2021-08-25 14:19:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 14:19:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 14:19:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-25 14:19:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 14:19:04,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 14:19:04,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-25 14:19:04,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-25 14:19:04,499 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 14:19:04,500 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-08-25 14:19:04,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 02:19:04 BoogieIcfgContainer [2021-08-25 14:19:04,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 14:19:04,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 14:19:04,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 14:19:04,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 14:19:04,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 02:19:03" (1/3) ... [2021-08-25 14:19:04,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f742cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 02:19:04, skipping insertion in model container [2021-08-25 14:19:04,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 02:19:03" (2/3) ... [2021-08-25 14:19:04,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f742cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 02:19:04, skipping insertion in model container [2021-08-25 14:19:04,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 02:19:04" (3/3) ... [2021-08-25 14:19:04,509 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2021-08-25 14:19:04,513 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 14:19:04,518 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-25 14:19:04,561 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 14:19:04,567 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 [2021-08-25 14:19:04,567 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-25 14:19:04,578 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 47 states have internal predecessors, (72), 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) [2021-08-25 14:19:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-25 14:19:04,582 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 14:19:04,583 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 14:19:04,583 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 14:19:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 14:19:04,588 INFO L82 PathProgramCache]: Analyzing trace with hash 212109301, now seen corresponding path program 1 times [2021-08-25 14:19:04,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 14:19:04,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188680721] [2021-08-25 14:19:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 14:19:04,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 14:19:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 14:19:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 14:19:04,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 14:19:04,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188680721] [2021-08-25 14:19:04,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188680721] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 14:19:04,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 14:19:04,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 14:19:04,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585938582] [2021-08-25 14:19:04,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 14:19:04,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 14:19:04,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 14:19:04,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 14:19:04,798 INFO L87 Difference]: Start difference. First operand has 48 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 47 states have internal predecessors, (72), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-08-25 14:19:04,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 14:19:04,931 INFO L93 Difference]: Finished difference Result 137 states and 207 transitions. [2021-08-25 14:19:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 14:19:04,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 [2021-08-25 14:19:04,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 14:19:04,940 INFO L225 Difference]: With dead ends: 137 [2021-08-25 14:19:04,941 INFO L226 Difference]: Without dead ends: 85 [2021-08-25 14:19:04,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 14:19:04,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-08-25 14:19:04,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 45. [2021-08-25 14:19:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 44 states have internal predecessors, (56), 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) [2021-08-25 14:19:04,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2021-08-25 14:19:04,980 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 8 [2021-08-25 14:19:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 14:19:04,981 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2021-08-25 14:19:04,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-08-25 14:19:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2021-08-25 14:19:04,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-25 14:19:04,982 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 14:19:04,982 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 14:19:04,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 14:19:04,983 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 14:19:04,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 14:19:04,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1436007159, now seen corresponding path program 1 times [2021-08-25 14:19:04,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 14:19:04,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091286319] [2021-08-25 14:19:04,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 14:19:04,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 14:19:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 14:19:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 14:19:05,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 14:19:05,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091286319] [2021-08-25 14:19:05,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091286319] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 14:19:05,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133701078] [2021-08-25 14:19:05,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 14:19:05,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 14:19:05,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 14:19:05,098 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) [2021-08-25 14:19:05,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-25 14:19:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 14:19:05,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-25 14:19:05,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 14:19:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 14:19:05,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133701078] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 14:19:05,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-25 14:19:05,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-08-25 14:19:05,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175591808] [2021-08-25 14:19:05,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-25 14:19:05,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 14:19:05,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-25 14:19:05,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-25 14:19:05,282 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-08-25 14:19:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 14:19:05,473 INFO L93 Difference]: Finished difference Result 166 states and 208 transitions. [2021-08-25 14:19:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 14:19:05,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 10 [2021-08-25 14:19:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 14:19:05,477 INFO L225 Difference]: With dead ends: 166 [2021-08-25 14:19:05,477 INFO L226 Difference]: Without dead ends: 126 [2021-08-25 14:19:05,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-25 14:19:05,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-08-25 14:19:05,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 47. [2021-08-25 14:19:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 46 states have internal predecessors, (58), 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) [2021-08-25 14:19:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2021-08-25 14:19:05,485 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 10 [2021-08-25 14:19:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 14:19:05,485 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2021-08-25 14:19:05,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-08-25 14:19:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2021-08-25 14:19:05,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-25 14:19:05,486 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 14:19:05,486 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 14:19:05,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-25 14:19:05,688 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 [2021-08-25 14:19:05,688 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 14:19:05,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 14:19:05,689 INFO L82 PathProgramCache]: Analyzing trace with hash 780809593, now seen corresponding path program 2 times [2021-08-25 14:19:05,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 14:19:05,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130951299] [2021-08-25 14:19:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 14:19:05,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 14:19:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 14:19:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-25 14:19:05,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 14:19:05,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130951299] [2021-08-25 14:19:05,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130951299] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 14:19:05,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 14:19:05,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-25 14:19:05,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114616984] [2021-08-25 14:19:05,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 14:19:05,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 14:19:05,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 14:19:05,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 14:19:05,781 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-08-25 14:19:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 14:19:05,856 INFO L93 Difference]: Finished difference Result 92 states and 117 transitions. [2021-08-25 14:19:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 14:19:05,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 12 [2021-08-25 14:19:05,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 14:19:05,859 INFO L225 Difference]: With dead ends: 92 [2021-08-25 14:19:05,859 INFO L226 Difference]: Without dead ends: 51 [2021-08-25 14:19:05,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 14:19:05,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-08-25 14:19:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-08-25 14:19:05,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 49 states have internal predecessors, (62), 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) [2021-08-25 14:19:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2021-08-25 14:19:05,881 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 12 [2021-08-25 14:19:05,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 14:19:05,881 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2021-08-25 14:19:05,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-08-25 14:19:05,882 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2021-08-25 14:19:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-25 14:19:05,883 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 14:19:05,883 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 14:19:05,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-25 14:19:05,884 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 14:19:05,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 14:19:05,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1692621165, now seen corresponding path program 1 times [2021-08-25 14:19:05,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 14:19:05,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403600086] [2021-08-25 14:19:05,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 14:19:05,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 14:19:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 14:19:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-25 14:19:05,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 14:19:05,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403600086] [2021-08-25 14:19:05,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403600086] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 14:19:05,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 14:19:05,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 14:19:05,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284831013] [2021-08-25 14:19:05,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 14:19:05,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 14:19:05,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 14:19:05,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 14:19:05,953 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 14:19:05,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 14:19:05,991 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2021-08-25 14:19:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 14:19:05,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-08-25 14:19:05,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 14:19:05,993 INFO L225 Difference]: With dead ends: 111 [2021-08-25 14:19:05,993 INFO L226 Difference]: Without dead ends: 73 [2021-08-25 14:19:05,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 14:19:05,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-25 14:19:05,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2021-08-25 14:19:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 50 states have internal predecessors, (63), 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) [2021-08-25 14:19:05,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2021-08-25 14:19:05,999 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 23 [2021-08-25 14:19:05,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 14:19:05,999 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2021-08-25 14:19:05,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 14:19:05,999 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2021-08-25 14:19:06,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-25 14:19:06,000 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 14:19:06,000 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 14:19:06,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-25 14:19:06,001 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 14:19:06,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 14:19:06,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2112056943, now seen corresponding path program 1 times [2021-08-25 14:19:06,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 14:19:06,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954925607] [2021-08-25 14:19:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 14:19:06,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 14:19:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 14:19:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-25 14:19:06,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 14:19:06,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954925607] [2021-08-25 14:19:06,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954925607] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 14:19:06,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268024123] [2021-08-25 14:19:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 14:19:06,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 14:19:06,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 14:19:06,051 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) [2021-08-25 14:19:06,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-25 14:19:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 14:19:06,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-25 14:19:06,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 14:19:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-25 14:19:06,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268024123] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 14:19:06,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-25 14:19:06,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-08-25 14:19:06,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498690325] [2021-08-25 14:19:06,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-25 14:19:06,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 14:19:06,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-25 14:19:06,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-25 14:19:06,360 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 14:19:06,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 14:19:06,693 INFO L93 Difference]: Finished difference Result 312 states and 396 transitions. [2021-08-25 14:19:06,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-25 14:19:06,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-25 14:19:06,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 14:19:06,697 INFO L225 Difference]: With dead ends: 312 [2021-08-25 14:19:06,697 INFO L226 Difference]: Without dead ends: 268 [2021-08-25 14:19:06,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-08-25 14:19:06,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-08-25 14:19:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 72. [2021-08-25 14:19:06,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 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) [2021-08-25 14:19:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2021-08-25 14:19:06,706 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 25 [2021-08-25 14:19:06,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 14:19:06,706 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2021-08-25 14:19:06,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 14:19:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2021-08-25 14:19:06,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-25 14:19:06,707 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 14:19:06,707 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 14:19:06,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-25 14:19:06,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 14:19:06,921 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 14:19:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 14:19:06,921 INFO L82 PathProgramCache]: Analyzing trace with hash -369930547, now seen corresponding path program 2 times [2021-08-25 14:19:06,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 14:19:06,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344988057] [2021-08-25 14:19:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 14:19:06,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 14:19:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 14:19:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-25 14:19:06,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 14:19:06,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344988057] [2021-08-25 14:19:06,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344988057] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 14:19:06,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 14:19:06,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-25 14:19:06,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226613287] [2021-08-25 14:19:06,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 14:19:06,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 14:19:06,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 14:19:06,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-25 14:19:06,983 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 14:19:07,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 14:19:07,023 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2021-08-25 14:19:07,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 14:19:07,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-08-25 14:19:07,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 14:19:07,025 INFO L225 Difference]: With dead ends: 139 [2021-08-25 14:19:07,025 INFO L226 Difference]: Without dead ends: 102 [2021-08-25 14:19:07,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-25 14:19:07,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-08-25 14:19:07,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 75. [2021-08-25 14:19:07,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.273972602739726) internal successors, (93), 74 states have internal predecessors, (93), 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) [2021-08-25 14:19:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 93 transitions. [2021-08-25 14:19:07,031 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 93 transitions. Word has length 29 [2021-08-25 14:19:07,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 14:19:07,031 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 93 transitions. [2021-08-25 14:19:07,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 14:19:07,032 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 93 transitions. [2021-08-25 14:19:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-25 14:19:07,032 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 14:19:07,033 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 14:19:07,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-25 14:19:07,033 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 14:19:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 14:19:07,034 INFO L82 PathProgramCache]: Analyzing trace with hash 811776259, now seen corresponding path program 1 times [2021-08-25 14:19:07,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 14:19:07,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856599468] [2021-08-25 14:19:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 14:19:07,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 14:19:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 14:19:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-25 14:19:07,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 14:19:07,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856599468] [2021-08-25 14:19:07,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856599468] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 14:19:07,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 14:19:07,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-25 14:19:07,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806072058] [2021-08-25 14:19:07,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 14:19:07,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 14:19:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 14:19:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-25 14:19:07,095 INFO L87 Difference]: Start difference. First operand 75 states and 93 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 14:19:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 14:19:07,119 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2021-08-25 14:19:07,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 14:19:07,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-08-25 14:19:07,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 14:19:07,120 INFO L225 Difference]: With dead ends: 84 [2021-08-25 14:19:07,121 INFO L226 Difference]: Without dead ends: 0 [2021-08-25 14:19:07,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-25 14:19:07,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-25 14:19:07,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-25 14:19:07,122 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) [2021-08-25 14:19:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-25 14:19:07,122 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-08-25 14:19:07,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 14:19:07,122 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-25 14:19:07,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 14:19:07,123 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-25 14:19:07,123 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-25 14:19:07,125 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 14:19:07,126 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 14:19:07,126 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 14:19:07,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-25 14:19:07,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-25 14:19:07,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 14:19:07,387 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-25 14:19:07,387 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 54) no Hoare annotation was computed. [2021-08-25 14:19:07,387 INFO L857 garLoopResultBuilder]: For program point L52-2(lines 52 54) no Hoare annotation was computed. [2021-08-25 14:19:07,387 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-25 14:19:07,388 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-25 14:19:07,388 INFO L857 garLoopResultBuilder]: For program point L61-2(lines 61 65) no Hoare annotation was computed. [2021-08-25 14:19:07,388 INFO L853 garLoopResultBuilder]: At program point L61-3(lines 61 65) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~n~0 0)) [2021-08-25 14:19:07,388 INFO L857 garLoopResultBuilder]: For program point L61-4(lines 61 65) no Hoare annotation was computed. [2021-08-25 14:19:07,388 INFO L857 garLoopResultBuilder]: For program point L62-2(lines 62 64) no Hoare annotation was computed. [2021-08-25 14:19:07,388 INFO L853 garLoopResultBuilder]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2021-08-25 14:19:07,388 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-08-25 14:19:07,388 INFO L857 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-08-25 14:19:07,389 INFO L857 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-08-25 14:19:07,389 INFO L857 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2021-08-25 14:19:07,389 INFO L857 garLoopResultBuilder]: For program point L13-5(line 13) no Hoare annotation was computed. [2021-08-25 14:19:07,389 INFO L857 garLoopResultBuilder]: For program point L13-7(line 13) no Hoare annotation was computed. [2021-08-25 14:19:07,389 INFO L857 garLoopResultBuilder]: For program point L13-8(line 13) no Hoare annotation was computed. [2021-08-25 14:19:07,389 INFO L857 garLoopResultBuilder]: For program point L13-9(line 13) no Hoare annotation was computed. [2021-08-25 14:19:07,389 INFO L857 garLoopResultBuilder]: For program point L13-11(line 13) no Hoare annotation was computed. [2021-08-25 14:19:07,390 INFO L857 garLoopResultBuilder]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2021-08-25 14:19:07,390 INFO L857 garLoopResultBuilder]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2021-08-25 14:19:07,390 INFO L853 garLoopResultBuilder]: At program point L55-3(lines 55 59) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_elem_exists_~i~0 0) (= ULTIMATE.start_elem_exists_~size 0) (= ULTIMATE.start_main_~n~0 0)) [2021-08-25 14:19:07,390 INFO L853 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_elem_exists_~i~0 0) (= ULTIMATE.start_elem_exists_~size 0) (= ULTIMATE.start_main_~n~0 0)) [2021-08-25 14:19:07,390 INFO L857 garLoopResultBuilder]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2021-08-25 14:19:07,390 INFO L857 garLoopResultBuilder]: For program point L47-2(lines 47 50) no Hoare annotation was computed. [2021-08-25 14:19:07,391 INFO L853 garLoopResultBuilder]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~n~0 0)) [2021-08-25 14:19:07,391 INFO L857 garLoopResultBuilder]: For program point L47-4(lines 47 50) no Hoare annotation was computed. [2021-08-25 14:19:07,391 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2021-08-25 14:19:07,391 INFO L853 garLoopResultBuilder]: At program point L39-3(lines 39 43) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~n~0 0)) [2021-08-25 14:19:07,391 INFO L857 garLoopResultBuilder]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2021-08-25 14:19:07,391 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-08-25 14:19:07,392 INFO L857 garLoopResultBuilder]: For program point L56-2(lines 56 58) no Hoare annotation was computed. [2021-08-25 14:19:07,392 INFO L853 garLoopResultBuilder]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2021-08-25 14:19:07,392 INFO L857 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2021-08-25 14:19:07,392 INFO L853 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2021-08-25 14:19:07,392 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-25 14:19:07,392 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-25 14:19:07,392 INFO L860 garLoopResultBuilder]: At program point L66(lines 27 67) the Hoare annotation is: true [2021-08-25 14:19:07,393 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-25 14:19:07,393 INFO L857 garLoopResultBuilder]: For program point L33-2(lines 33 36) no Hoare annotation was computed. [2021-08-25 14:19:07,393 INFO L853 garLoopResultBuilder]: At program point L33-3(lines 33 36) the Hoare annotation is: (= ULTIMATE.start_main_~n~0 0) [2021-08-25 14:19:07,393 INFO L857 garLoopResultBuilder]: For program point L33-4(lines 33 36) no Hoare annotation was computed. [2021-08-25 14:19:07,393 INFO L853 garLoopResultBuilder]: At program point L25(lines 20 26) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_elem_exists_~i~0 0) (= ULTIMATE.start_elem_exists_~size 0) (= |ULTIMATE.start_elem_exists_#res| 0) (= ULTIMATE.start_main_~n~0 0)) [2021-08-25 14:19:07,393 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-25 14:19:07,394 INFO L853 garLoopResultBuilder]: At program point L18(lines 16 19) the Hoare annotation is: false [2021-08-25 14:19:07,394 INFO L857 garLoopResultBuilder]: For program point L51-2(lines 51 60) no Hoare annotation was computed. [2021-08-25 14:19:07,394 INFO L853 garLoopResultBuilder]: At program point L51-3(lines 51 60) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 0)) (.cse1 (= ULTIMATE.start_main_~n~0 0))) (or (and .cse0 (= ULTIMATE.start_elem_exists_~i~0 0) (= ULTIMATE.start_elem_exists_~size 0) .cse1) (and .cse0 (= ULTIMATE.start_main_~v~0 0) .cse1))) [2021-08-25 14:19:07,394 INFO L857 garLoopResultBuilder]: For program point L51-4(lines 51 60) no Hoare annotation was computed. [2021-08-25 14:19:07,398 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 14:19:07,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 02:19:07 BoogieIcfgContainer [2021-08-25 14:19:07,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 14:19:07,411 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 14:19:07,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 14:19:07,411 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 14:19:07,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 02:19:04" (3/4) ... [2021-08-25 14:19:07,414 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-25 14:19:07,422 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-08-25 14:19:07,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-08-25 14:19:07,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-25 14:19:07,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-25 14:19:07,440 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == 0 && i == 0) && size == 0) && \result == 0) && n == 0 [2021-08-25 14:19:07,461 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 14:19:07,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 14:19:07,462 INFO L168 Benchmark]: Toolchain (without parser) took 3825.84 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 31.7 MB in the beginning and 27.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. [2021-08-25 14:19:07,463 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 14:19:07,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.77 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.5 MB in the beginning and 50.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-08-25 14:19:07,464 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.82 ms. Allocated memory is still 67.1 MB. Free memory was 50.7 MB in the beginning and 48.8 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 14:19:07,464 INFO L168 Benchmark]: Boogie Preprocessor took 24.59 ms. Allocated memory is still 67.1 MB. Free memory was 48.8 MB in the beginning and 47.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 14:19:07,464 INFO L168 Benchmark]: RCFGBuilder took 534.43 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 40.3 MB in the end (delta: 6.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-08-25 14:19:07,465 INFO L168 Benchmark]: TraceAbstraction took 2907.67 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.8 MB in the beginning and 31.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2021-08-25 14:19:07,465 INFO L168 Benchmark]: Witness Printer took 50.06 ms. Allocated memory is still 81.8 MB. Free memory was 31.4 MB in the beginning and 27.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-25 14:19:07,467 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.77 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.5 MB in the beginning and 50.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.82 ms. Allocated memory is still 67.1 MB. Free memory was 50.7 MB in the beginning and 48.8 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.59 ms. Allocated memory is still 67.1 MB. Free memory was 48.8 MB in the beginning and 47.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 534.43 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 40.3 MB in the end (delta: 6.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2907.67 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.8 MB in the beginning and 31.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. * Witness Printer took 50.06 ms. Allocated memory is still 81.8 MB. Free memory was 31.4 MB in the beginning and 27.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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, 48 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2837.8ms, OverallIterations: 7, TraceHistogramMax: 3, EmptinessCheckTime: 11.9ms, AutomataDifference: 889.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 260.3ms, InitialAbstractionConstructionTime: 8.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 280 SDtfs, 842 SDslu, 438 SDs, 0 SdLazy, 211 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 446.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 187.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=6, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 71.3ms AutomataMinimizationTime, 7 MinimizatonAttempts, 365 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 29 NumberOfFragments, 95 HoareAnnotationTreeSize, 13 FomulaSimplifications, 439 FormulaSimplificationTreeSizeReduction, 69.7ms HoareSimplificationTime, 13 FomulaSimplificationsInter, 36 FormulaSimplificationTreeSizeReductionInter, 182.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 58.2ms SsaConstructionTime, 188.6ms SatisfiabilityAnalysisTime, 655.1ms InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 39/46 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 3 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((x == 0 && i == 0) && size == 0) && n == 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((x == 0 && i == 0) && size == 0) && n == 0) || ((x == 0 && v == 0) && n == 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((x == 0 && i == 0) && size == 0) && \result == 0) && n == 0 - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((x == 0 && i == 0) && size == 0) && n == 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: n == 0 - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-08-25 14:19:07,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...