./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/freire1_valuebound2.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 2c82dcc3d917c20926ea634368e9542e23b7ae4e7817b33542bbba01403d748d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 00:23:04,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 00:23:04,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 00:23:04,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 00:23:04,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 00:23:04,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 00:23:04,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 00:23:04,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 00:23:04,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 00:23:04,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 00:23:04,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 00:23:04,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 00:23:04,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 00:23:04,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 00:23:04,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 00:23:04,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 00:23:04,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 00:23:04,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 00:23:04,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 00:23:04,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 00:23:04,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 00:23:04,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 00:23:04,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 00:23:04,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 00:23:04,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 00:23:04,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 00:23:04,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 00:23:04,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 00:23:04,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 00:23:04,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 00:23:04,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 00:23:04,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 00:23:04,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 00:23:04,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 00:23:04,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 00:23:04,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 00:23:04,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 00:23:04,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 00:23:04,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 00:23:04,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 00:23:04,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 00:23:04,455 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 00:23:04,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 00:23:04,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 00:23:04,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 00:23:04,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 00:23:04,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 00:23:04,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 00:23:04,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 00:23:04,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 00:23:04,482 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 00:23:04,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 00:23:04,483 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 00:23:04,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 00:23:04,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 00:23:04,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 00:23:04,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 00:23:04,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 00:23:04,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 00:23:04,484 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 00:23:04,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 00:23:04,485 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 00:23:04,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 00:23:04,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 00:23:04,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 00:23:04,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 00:23:04,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:23:04,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 00:23:04,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 00:23:04,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 00:23:04,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 00:23:04,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 00:23:04,487 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 00:23:04,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 00:23:04,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 00:23:04,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 00:23:04,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c82dcc3d917c20926ea634368e9542e23b7ae4e7817b33542bbba01403d748d [2021-12-16 00:23:04,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 00:23:04,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 00:23:04,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 00:23:04,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 00:23:04,663 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 00:23:04,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c [2021-12-16 00:23:04,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/843a27b5b/bae9adfd87b34fe1951beabc9431ff4b/FLAG7ba5bd568 [2021-12-16 00:23:05,029 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 00:23:05,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c [2021-12-16 00:23:05,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/843a27b5b/bae9adfd87b34fe1951beabc9431ff4b/FLAG7ba5bd568 [2021-12-16 00:23:05,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/843a27b5b/bae9adfd87b34fe1951beabc9431ff4b [2021-12-16 00:23:05,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 00:23:05,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 00:23:05,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 00:23:05,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 00:23:05,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 00:23:05,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:23:05" (1/1) ... [2021-12-16 00:23:05,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a080139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05, skipping insertion in model container [2021-12-16 00:23:05,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:23:05" (1/1) ... [2021-12-16 00:23:05,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 00:23:05,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 00:23:05,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c[712,725] [2021-12-16 00:23:05,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:23:05,228 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 00:23:05,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c[712,725] [2021-12-16 00:23:05,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:23:05,247 INFO L208 MainTranslator]: Completed translation [2021-12-16 00:23:05,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05 WrapperNode [2021-12-16 00:23:05,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 00:23:05,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 00:23:05,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 00:23:05,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 00:23:05,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05" (1/1) ... [2021-12-16 00:23:05,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05" (1/1) ... [2021-12-16 00:23:05,269 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2021-12-16 00:23:05,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 00:23:05,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 00:23:05,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 00:23:05,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 00:23:05,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05" (1/1) ... [2021-12-16 00:23:05,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05" (1/1) ... [2021-12-16 00:23:05,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05" (1/1) ... [2021-12-16 00:23:05,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05" (1/1) ... [2021-12-16 00:23:05,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05" (1/1) ... [2021-12-16 00:23:05,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05" (1/1) ... [2021-12-16 00:23:05,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05" (1/1) ... [2021-12-16 00:23:05,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 00:23:05,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 00:23:05,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 00:23:05,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 00:23:05,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05" (1/1) ... [2021-12-16 00:23:05,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:23:05,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:23:05,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 00:23:05,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 00:23:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 00:23:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 00:23:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 00:23:05,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 00:23:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 00:23:05,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 00:23:05,378 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 00:23:05,379 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 00:23:05,455 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 00:23:05,459 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 00:23:05,460 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 00:23:05,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:23:05 BoogieIcfgContainer [2021-12-16 00:23:05,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 00:23:05,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 00:23:05,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 00:23:05,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 00:23:05,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:23:05" (1/3) ... [2021-12-16 00:23:05,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8c9e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:23:05, skipping insertion in model container [2021-12-16 00:23:05,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:05" (2/3) ... [2021-12-16 00:23:05,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8c9e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:23:05, skipping insertion in model container [2021-12-16 00:23:05,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:23:05" (3/3) ... [2021-12-16 00:23:05,479 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound2.c [2021-12-16 00:23:05,483 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 00:23:05,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 00:23:05,527 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 00:23:05,532 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 00:23:05,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 00:23:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 00:23:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 00:23:05,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:23:05,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:23:05,546 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:23:05,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:23:05,549 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2021-12-16 00:23:05,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:23:05,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114912360] [2021-12-16 00:23:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:23:05,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:23:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:23:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:23:05,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:23:05,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114912360] [2021-12-16 00:23:05,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114912360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:23:05,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:23:05,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 00:23:05,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668576968] [2021-12-16 00:23:05,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:23:05,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 00:23:05,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:23:05,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 00:23:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 00:23:05,666 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 00:23:05,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:23:05,677 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-12-16 00:23:05,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 00:23:05,679 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 00:23:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:23:05,683 INFO L225 Difference]: With dead ends: 33 [2021-12-16 00:23:05,684 INFO L226 Difference]: Without dead ends: 14 [2021-12-16 00:23:05,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 00:23:05,688 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:23:05,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:23:05,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-16 00:23:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-16 00:23:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 00:23:05,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-16 00:23:05,711 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-12-16 00:23:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:23:05,712 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-16 00:23:05,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 00:23:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-16 00:23:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 00:23:05,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:23:05,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:23:05,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 00:23:05,713 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:23:05,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:23:05,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2021-12-16 00:23:05,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:23:05,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752803614] [2021-12-16 00:23:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:23:05,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:23:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 00:23:05,732 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 00:23:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 00:23:05,754 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 00:23:05,755 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 00:23:05,756 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-16 00:23:05,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 00:23:05,760 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-16 00:23:05,762 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 00:23:05,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:23:05 BoogieIcfgContainer [2021-12-16 00:23:05,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 00:23:05,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 00:23:05,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 00:23:05,779 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 00:23:05,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:23:05" (3/4) ... [2021-12-16 00:23:05,781 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 00:23:05,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 00:23:05,782 INFO L158 Benchmark]: Toolchain (without parser) took 723.73ms. Allocated memory was 100.7MB in the beginning and 127.9MB in the end (delta: 27.3MB). Free memory was 70.5MB in the beginning and 68.5MB in the end (delta: 2.0MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2021-12-16 00:23:05,782 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory was 58.0MB in the beginning and 58.0MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 00:23:05,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.88ms. Allocated memory was 100.7MB in the beginning and 127.9MB in the end (delta: 27.3MB). Free memory was 70.1MB in the beginning and 103.6MB in the end (delta: -33.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 00:23:05,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.31ms. Allocated memory is still 127.9MB. Free memory was 103.6MB in the beginning and 102.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 00:23:05,784 INFO L158 Benchmark]: Boogie Preprocessor took 13.21ms. Allocated memory is still 127.9MB. Free memory was 102.0MB in the beginning and 101.1MB in the end (delta: 815.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 00:23:05,784 INFO L158 Benchmark]: RCFGBuilder took 177.15ms. Allocated memory is still 127.9MB. Free memory was 100.6MB in the beginning and 91.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 00:23:05,784 INFO L158 Benchmark]: TraceAbstraction took 315.50ms. Allocated memory is still 127.9MB. Free memory was 91.6MB in the beginning and 68.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-16 00:23:05,785 INFO L158 Benchmark]: Witness Printer took 3.32ms. Allocated memory is still 127.9MB. Free memory was 68.5MB in the beginning and 68.5MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 00:23:05,787 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory was 58.0MB in the beginning and 58.0MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.88ms. Allocated memory was 100.7MB in the beginning and 127.9MB in the end (delta: 27.3MB). Free memory was 70.1MB in the beginning and 103.6MB in the end (delta: -33.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.31ms. Allocated memory is still 127.9MB. Free memory was 103.6MB in the beginning and 102.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.21ms. Allocated memory is still 127.9MB. Free memory was 102.0MB in the beginning and 101.1MB in the end (delta: 815.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 177.15ms. Allocated memory is still 127.9MB. Free memory was 100.6MB in the beginning and 91.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 315.50ms. Allocated memory is still 127.9MB. Free memory was 91.6MB in the beginning and 68.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.32ms. Allocated memory is still 127.9MB. Free memory was 68.5MB in the beginning and 68.5MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=2) [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=2) [L29] x = a / 2.0 [L30] r = 0 VAL [r=0] [L32] COND TRUE 1 VAL [r=0] [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 19 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 could not prove your program: unable to determine feasibility of some traces [2021-12-16 00:23:05,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c82dcc3d917c20926ea634368e9542e23b7ae4e7817b33542bbba01403d748d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 00:23:07,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 00:23:07,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 00:23:07,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 00:23:07,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 00:23:07,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 00:23:07,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 00:23:07,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 00:23:07,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 00:23:07,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 00:23:07,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 00:23:07,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 00:23:07,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 00:23:07,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 00:23:07,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 00:23:07,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 00:23:07,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 00:23:07,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 00:23:07,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 00:23:07,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 00:23:07,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 00:23:07,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 00:23:07,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 00:23:07,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 00:23:07,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 00:23:07,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 00:23:07,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 00:23:07,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 00:23:07,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 00:23:07,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 00:23:07,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 00:23:07,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 00:23:07,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 00:23:07,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 00:23:07,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 00:23:07,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 00:23:07,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 00:23:07,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 00:23:07,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 00:23:07,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 00:23:07,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 00:23:07,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-16 00:23:07,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 00:23:07,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 00:23:07,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 00:23:07,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 00:23:07,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 00:23:07,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 00:23:07,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 00:23:07,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 00:23:07,653 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 00:23:07,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 00:23:07,654 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 00:23:07,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 00:23:07,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 00:23:07,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 00:23:07,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 00:23:07,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 00:23:07,654 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 00:23:07,655 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 00:23:07,655 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 00:23:07,655 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 00:23:07,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 00:23:07,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 00:23:07,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 00:23:07,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 00:23:07,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 00:23:07,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 00:23:07,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:23:07,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 00:23:07,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 00:23:07,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 00:23:07,657 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 00:23:07,657 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 00:23:07,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 00:23:07,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 00:23:07,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 00:23:07,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 00:23:07,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 00:23:07,658 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c82dcc3d917c20926ea634368e9542e23b7ae4e7817b33542bbba01403d748d [2021-12-16 00:23:07,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 00:23:07,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 00:23:07,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 00:23:07,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 00:23:07,907 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 00:23:07,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c [2021-12-16 00:23:07,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b2222a37/9d66b9cd545344b6b21b9ca850033917/FLAGc3a8faebb [2021-12-16 00:23:08,318 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 00:23:08,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c [2021-12-16 00:23:08,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b2222a37/9d66b9cd545344b6b21b9ca850033917/FLAGc3a8faebb [2021-12-16 00:23:08,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b2222a37/9d66b9cd545344b6b21b9ca850033917 [2021-12-16 00:23:08,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 00:23:08,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 00:23:08,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 00:23:08,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 00:23:08,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 00:23:08,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:23:08" (1/1) ... [2021-12-16 00:23:08,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5467bf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08, skipping insertion in model container [2021-12-16 00:23:08,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:23:08" (1/1) ... [2021-12-16 00:23:08,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 00:23:08,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 00:23:08,473 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c[712,725] [2021-12-16 00:23:08,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:23:08,529 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 00:23:08,541 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c[712,725] [2021-12-16 00:23:08,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:23:08,567 INFO L208 MainTranslator]: Completed translation [2021-12-16 00:23:08,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08 WrapperNode [2021-12-16 00:23:08,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 00:23:08,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 00:23:08,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 00:23:08,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 00:23:08,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08" (1/1) ... [2021-12-16 00:23:08,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08" (1/1) ... [2021-12-16 00:23:08,604 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2021-12-16 00:23:08,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 00:23:08,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 00:23:08,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 00:23:08,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 00:23:08,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08" (1/1) ... [2021-12-16 00:23:08,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08" (1/1) ... [2021-12-16 00:23:08,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08" (1/1) ... [2021-12-16 00:23:08,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08" (1/1) ... [2021-12-16 00:23:08,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08" (1/1) ... [2021-12-16 00:23:08,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08" (1/1) ... [2021-12-16 00:23:08,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08" (1/1) ... [2021-12-16 00:23:08,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 00:23:08,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 00:23:08,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 00:23:08,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 00:23:08,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08" (1/1) ... [2021-12-16 00:23:08,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:23:08,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:23:08,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 00:23:08,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 00:23:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 00:23:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 00:23:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 00:23:08,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 00:23:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 00:23:08,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 00:23:08,758 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 00:23:08,760 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 00:23:09,958 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 00:23:09,963 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 00:23:09,963 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 00:23:09,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:23:09 BoogieIcfgContainer [2021-12-16 00:23:09,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 00:23:09,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 00:23:09,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 00:23:09,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 00:23:09,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:23:08" (1/3) ... [2021-12-16 00:23:09,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ee4263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:23:09, skipping insertion in model container [2021-12-16 00:23:09,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:08" (2/3) ... [2021-12-16 00:23:09,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ee4263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:23:09, skipping insertion in model container [2021-12-16 00:23:09,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:23:09" (3/3) ... [2021-12-16 00:23:09,971 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound2.c [2021-12-16 00:23:09,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 00:23:09,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 00:23:10,006 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 00:23:10,010 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 00:23:10,011 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 00:23:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 00:23:10,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 00:23:10,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:23:10,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:23:10,030 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:23:10,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:23:10,040 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2021-12-16 00:23:10,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 00:23:10,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059799242] [2021-12-16 00:23:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:23:10,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 00:23:10,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 00:23:10,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 00:23:10,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 00:23:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:23:10,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 00:23:10,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:23:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:23:10,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:23:10,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 00:23:10,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059799242] [2021-12-16 00:23:10,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059799242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:23:10,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:23:10,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 00:23:10,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202169943] [2021-12-16 00:23:10,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:23:10,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 00:23:10,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 00:23:10,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 00:23:10,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 00:23:10,441 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 00:23:10,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:23:10,454 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-12-16 00:23:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 00:23:10,455 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 00:23:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:23:10,460 INFO L225 Difference]: With dead ends: 33 [2021-12-16 00:23:10,460 INFO L226 Difference]: Without dead ends: 14 [2021-12-16 00:23:10,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 00:23:10,466 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:23:10,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:23:10,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-16 00:23:10,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-16 00:23:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 00:23:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-16 00:23:10,497 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-12-16 00:23:10,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:23:10,499 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-16 00:23:10,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 00:23:10,499 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-16 00:23:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 00:23:10,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:23:10,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:23:10,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-16 00:23:10,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 00:23:10,708 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:23:10,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:23:10,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2021-12-16 00:23:10,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 00:23:10,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154026212] [2021-12-16 00:23:10,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:23:10,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 00:23:10,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 00:23:10,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 00:23:10,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 00:23:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:23:11,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 00:23:11,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:24:04,263 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)))) (and (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse1) (let ((.cse2 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1) (fp.mul roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0)))))))) (or (and .cse2 (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) (and (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)) (not .cse2))))))) is different from true