./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe13b4d37dff944634939e96f1fb55a7d3b4c4ef ................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 13:15:16,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 13:15:16,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 13:15:17,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 13:15:17,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 13:15:17,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 13:15:17,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 13:15:17,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 13:15:17,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 13:15:17,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 13:15:17,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 13:15:17,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 13:15:17,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 13:15:17,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 13:15:17,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 13:15:17,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 13:15:17,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 13:15:17,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 13:15:17,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 13:15:17,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 13:15:17,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 13:15:17,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 13:15:17,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 13:15:17,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 13:15:17,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 13:15:17,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 13:15:17,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 13:15:17,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 13:15:17,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 13:15:17,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 13:15:17,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 13:15:17,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 13:15:17,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 13:15:17,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 13:15:17,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 13:15:17,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 13:15:17,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 13:15:17,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 13:15:17,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 13:15:17,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 13:15:17,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 13:15:17,079 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 13:15:17,108 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 13:15:17,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 13:15:17,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 13:15:17,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 13:15:17,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 13:15:17,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 13:15:17,112 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 13:15:17,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 13:15:17,112 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 13:15:17,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 13:15:17,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 13:15:17,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 13:15:17,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 13:15:17,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 13:15:17,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 13:15:17,114 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 13:15:17,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 13:15:17,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 13:15:17,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 13:15:17,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 13:15:17,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 13:15:17,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 13:15:17,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:15:17,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 13:15:17,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 13:15:17,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 13:15:17,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 13:15:17,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 13:15:17,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 13:15:17,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 13:15:17,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe13b4d37dff944634939e96f1fb55a7d3b4c4ef [2021-08-29 13:15:17,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 13:15:17,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 13:15:17,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 13:15:17,489 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 13:15:17,490 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 13:15:17,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2021-08-29 13:15:17,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641f4d91d/5318664ee3d6422eaaeb283805d77d5a/FLAG90aa60808 [2021-08-29 13:15:17,968 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 13:15:17,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2021-08-29 13:15:17,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641f4d91d/5318664ee3d6422eaaeb283805d77d5a/FLAG90aa60808 [2021-08-29 13:15:17,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641f4d91d/5318664ee3d6422eaaeb283805d77d5a [2021-08-29 13:15:17,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 13:15:17,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 13:15:18,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 13:15:18,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 13:15:18,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 13:15:18,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:15:17" (1/1) ... [2021-08-29 13:15:18,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9bb065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18, skipping insertion in model container [2021-08-29 13:15:18,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:15:17" (1/1) ... [2021-08-29 13:15:18,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 13:15:18,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 13:15:18,167 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/nla-digbench-scaling/geo1-u_valuebound20.c[563,576] [2021-08-29 13:15:18,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:15:18,188 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 13:15:18,203 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/nla-digbench-scaling/geo1-u_valuebound20.c[563,576] [2021-08-29 13:15:18,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:15:18,244 INFO L208 MainTranslator]: Completed translation [2021-08-29 13:15:18,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18 WrapperNode [2021-08-29 13:15:18,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 13:15:18,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 13:15:18,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 13:15:18,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 13:15:18,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18" (1/1) ... [2021-08-29 13:15:18,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18" (1/1) ... [2021-08-29 13:15:18,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 13:15:18,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 13:15:18,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 13:15:18,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 13:15:18,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18" (1/1) ... [2021-08-29 13:15:18,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18" (1/1) ... [2021-08-29 13:15:18,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18" (1/1) ... [2021-08-29 13:15:18,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18" (1/1) ... [2021-08-29 13:15:18,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18" (1/1) ... [2021-08-29 13:15:18,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18" (1/1) ... [2021-08-29 13:15:18,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18" (1/1) ... [2021-08-29 13:15:18,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 13:15:18,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 13:15:18,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 13:15:18,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 13:15:18,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18" (1/1) ... [2021-08-29 13:15:18,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:15:18,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:15:18,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 13:15:18,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 13:15:18,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 13:15:18,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 13:15:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 13:15:18,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 13:15:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-08-29 13:15:18,578 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 13:15:18,580 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-08-29 13:15:18,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:15:18 BoogieIcfgContainer [2021-08-29 13:15:18,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 13:15:18,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 13:15:18,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 13:15:18,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 13:15:18,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:15:17" (1/3) ... [2021-08-29 13:15:18,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49746e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:15:18, skipping insertion in model container [2021-08-29 13:15:18,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:18" (2/3) ... [2021-08-29 13:15:18,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49746e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:15:18, skipping insertion in model container [2021-08-29 13:15:18,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:15:18" (3/3) ... [2021-08-29 13:15:18,589 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound20.c [2021-08-29 13:15:18,596 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 13:15:18,596 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 13:15:18,642 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 13:15:18,651 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 13:15:18,651 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 13:15:18,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:15:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 13:15:18,674 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:15:18,676 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:15:18,677 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 13:15:18,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:15:18,686 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-08-29 13:15:18,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:15:18,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942497798] [2021-08-29 13:15:18,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:15:18,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:15:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:15:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:15:18,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:15:18,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942497798] [2021-08-29 13:15:18,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942497798] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:15:18,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:15:18,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 13:15:18,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084601550] [2021-08-29 13:15:18,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 13:15:18,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:15:18,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 13:15:18,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:15:18,899 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:15:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:15:18,984 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-08-29 13:15:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 13:15:18,986 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 13:15:18,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:15:18,992 INFO L225 Difference]: With dead ends: 35 [2021-08-29 13:15:18,992 INFO L226 Difference]: Without dead ends: 15 [2021-08-29 13:15:18,995 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:15:19,004 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.55ms IncrementalHoareTripleChecker+Time [2021-08-29 13:15:19,005 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.28ms Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 71.55ms Time] [2021-08-29 13:15:19,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-29 13:15:19,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-29 13:15:19,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:15:19,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-08-29 13:15:19,051 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-08-29 13:15:19,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:15:19,052 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-08-29 13:15:19,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:15:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-08-29 13:15:19,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 13:15:19,053 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:15:19,053 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:15:19,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 13:15:19,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 13:15:19,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:15:19,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-08-29 13:15:19,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:15:19,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692264860] [2021-08-29 13:15:19,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:15:19,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:15:19,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:15:19,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632627404] [2021-08-29 13:15:19,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:15:19,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:15:19,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:15:19,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:15:19,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 13:15:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:15:19,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 13:15:19,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:15:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:15:19,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:15:19,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:15:19,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692264860] [2021-08-29 13:15:19,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:15:19,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632627404] [2021-08-29 13:15:19,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632627404] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:15:19,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:15:19,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:15:19,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779097458] [2021-08-29 13:15:19,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:15:19,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:15:19,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:15:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:15:19,289 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:15:19,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:15:19,398 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-08-29 13:15:19,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:15:19,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 13:15:19,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:15:19,400 INFO L225 Difference]: With dead ends: 22 [2021-08-29 13:15:19,400 INFO L226 Difference]: Without dead ends: 20 [2021-08-29 13:15:19,401 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:15:19,402 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.93ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.10ms IncrementalHoareTripleChecker+Time [2021-08-29 13:15:19,403 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 1.93ms Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 75.10ms Time] [2021-08-29 13:15:19,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-29 13:15:19,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2021-08-29 13:15:19,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:15:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-08-29 13:15:19,409 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2021-08-29 13:15:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:15:19,410 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-08-29 13:15:19,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:15:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-08-29 13:15:19,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 13:15:19,413 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:15:19,413 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:15:19,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 13:15:19,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:15:19,621 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 13:15:19,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:15:19,622 INFO L82 PathProgramCache]: Analyzing trace with hash 636924791, now seen corresponding path program 1 times [2021-08-29 13:15:19,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:15:19,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302445187] [2021-08-29 13:15:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:15:19,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:15:19,636 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:15:19,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259091308] [2021-08-29 13:15:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:15:19,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:15:19,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:15:19,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:15:19,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 13:15:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:15:19,685 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 13:15:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:15:19,712 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 13:15:19,712 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 13:15:19,713 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 13:15:19,715 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 13:15:19,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 13:15:19,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-29 13:15:19,925 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 13:15:19,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 01:15:19 BoogieIcfgContainer [2021-08-29 13:15:19,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 13:15:19,942 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 13:15:19,942 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 13:15:19,943 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 13:15:19,943 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:15:18" (3/4) ... [2021-08-29 13:15:19,945 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 13:15:19,998 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 13:15:19,998 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 13:15:19,999 INFO L158 Benchmark]: Toolchain (without parser) took 2000.03ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.7MB in the beginning and 44.4MB in the end (delta: -14.7MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2021-08-29 13:15:19,999 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 52.4MB. Free memory is still 34.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:15:20,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.11ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.4MB in the beginning and 47.0MB in the end (delta: -17.6MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-08-29 13:15:20,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.79ms. Allocated memory is still 62.9MB. Free memory was 46.8MB in the beginning and 45.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:15:20,001 INFO L158 Benchmark]: Boogie Preprocessor took 38.34ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 44.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:15:20,003 INFO L158 Benchmark]: RCFGBuilder took 248.76ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 35.6MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 13:15:20,005 INFO L158 Benchmark]: TraceAbstraction took 1358.40ms. Allocated memory is still 62.9MB. Free memory was 35.0MB in the beginning and 27.6MB in the end (delta: 7.4MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-08-29 13:15:20,006 INFO L158 Benchmark]: Witness Printer took 56.31ms. Allocated memory is still 62.9MB. Free memory was 27.6MB in the beginning and 44.4MB in the end (delta: -16.8MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2021-08-29 13:15:20,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 52.4MB. Free memory is still 34.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.11ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.4MB in the beginning and 47.0MB in the end (delta: -17.6MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.79ms. Allocated memory is still 62.9MB. Free memory was 46.8MB in the beginning and 45.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.34ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 44.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 248.76ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 35.6MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1358.40ms. Allocated memory is still 62.9MB. Free memory was 35.0MB in the beginning and 27.6MB in the end (delta: 7.4MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Witness Printer took 56.31ms. Allocated memory is still 62.9MB. Free memory was 27.6MB in the beginning and 44.4MB in the end (delta: -16.8MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_unsigned_int() [L13] COND FALSE !(!cond) [L27] k = __VERIFIER_nondet_unsigned_int() [L13] COND FALSE !(!cond) [L30] x = 1 [L31] y = z [L32] c = 1 [L34] COND TRUE 1 [L16] COND FALSE !(!(cond)) [L37] COND TRUE !(c < k) [L46] x = x * (z - 1) [L16] COND TRUE !(cond) [L18] reach_error() - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1283.80ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 15.23ms, AutomataDifference: 251.03ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 9.93ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 146.65ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 123.63ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 64 mSolverCounterSat, 2.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.94ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 38.40ms AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.24ms SsaConstructionTime, 59.54ms SatisfiabilityAnalysisTime, 205.17ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 4 NumberOfNonLiveVariables, 54 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2021-08-29 13:15:20,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...