/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-regression/integerpromotion-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:21:00,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:21:00,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:21:00,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:21:00,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:21:00,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:21:00,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:21:00,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:21:00,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:21:00,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:21:00,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:21:00,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:21:00,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:21:00,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:21:00,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:21:00,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:21:00,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:21:00,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:21:00,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:21:00,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:21:00,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:21:00,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:21:00,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:21:00,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:21:00,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:21:00,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-19 17:21:00,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-19 17:21:00,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-19 17:21:00,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-19 17:21:00,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-19 17:21:00,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-19 17:21:00,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-19 17:21:00,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-19 17:21:00,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:21:00,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:21:00,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:21:00,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-19 17:21:00,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:21:00,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:21:00,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:21:00,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:21:00,510 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:21:00,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:21:00,512 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:21:00,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:21:00,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:21:00,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:21:00,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:21:00,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:21:00,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:21:00,514 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:21:00,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:21:00,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:21:00,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:21:00,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:21:00,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:21:00,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:21:00,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:21:00,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:21:00,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:21:00,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:21:00,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:21:00,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:21:00,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:21:00,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:21:00,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:21:00,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:21:00,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:21:00,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:21:00,976 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:21:00,977 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:21:00,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/integerpromotion-3.c [2021-02-19 17:21:01,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebe2812f7/770179fbcdce4a4bb4330d78ef05c087/FLAGf869c9576 [2021-02-19 17:21:01,633 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:21:01,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/integerpromotion-3.c [2021-02-19 17:21:01,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebe2812f7/770179fbcdce4a4bb4330d78ef05c087/FLAGf869c9576 [2021-02-19 17:21:01,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebe2812f7/770179fbcdce4a4bb4330d78ef05c087 [2021-02-19 17:21:02,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:21:02,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:21:02,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:21:02,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:21:02,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:21:02,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:21:02" (1/1) ... [2021-02-19 17:21:02,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb500e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:21:02, skipping insertion in model container [2021-02-19 17:21:02,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:21:02" (1/1) ... [2021-02-19 17:21:02,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:21:02,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:21:02,250 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/integerpromotion-3.c[423,436] [2021-02-19 17:21:02,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:21:02,265 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:21:02,281 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/integerpromotion-3.c[423,436] [2021-02-19 17:21:02,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:21:02,298 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:21:02,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:21:02 WrapperNode [2021-02-19 17:21:02,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:21:02,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:21:02,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:21:02,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:21:02,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:21:02" (1/1) ... [2021-02-19 17:21:02,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:21:02" (1/1) ... [2021-02-19 17:21:02,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:21:02" (1/1) ... [2021-02-19 17:21:02,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:21:02" (1/1) ... [2021-02-19 17:21:02,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:21:02" (1/1) ... [2021-02-19 17:21:02,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:21:02" (1/1) ... [2021-02-19 17:21:02,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:21:02" (1/1) ... [2021-02-19 17:21:02,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:21:02,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:21:02,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:21:02,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:21:02,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:21:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:21:02,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:21:02,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:21:02,441 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:21:02,441 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:21:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:21:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:21:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:21:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:21:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:21:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:21:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:21:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:21:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:21:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:21:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:21:02,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:21:02,742 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 17:21:02,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:21:02 BoogieIcfgContainer [2021-02-19 17:21:02,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:21:02,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:21:02,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:21:02,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:21:02,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:21:02" (1/3) ... [2021-02-19 17:21:02,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2be82e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:21:02, skipping insertion in model container [2021-02-19 17:21:02,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:21:02" (2/3) ... [2021-02-19 17:21:02,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2be82e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:21:02, skipping insertion in model container [2021-02-19 17:21:02,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:21:02" (3/3) ... [2021-02-19 17:21:02,771 INFO L111 eAbstractionObserver]: Analyzing ICFG integerpromotion-3.c [2021-02-19 17:21:02,785 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:21:02,800 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:21:02,828 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:21:02,871 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:21:02,871 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:21:02,871 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:21:02,871 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:21:02,871 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:21:02,871 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:21:02,872 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:21:02,872 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:21:02,894 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-02-19 17:21:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-02-19 17:21:02,901 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:21:02,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:21:02,903 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:21:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:21:02,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2110122215, now seen corresponding path program 1 times [2021-02-19 17:21:02,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:21:02,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316526393] [2021-02-19 17:21:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:21:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:21:03,130 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:21:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:21:03,195 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:21:03,243 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:21:03,244 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:21:03,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:21:03,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:21:03 BoogieIcfgContainer [2021-02-19 17:21:03,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:21:03,281 INFO L168 Benchmark]: Toolchain (without parser) took 1269.72 ms. Allocated memory is still 165.7 MB. Free memory was 142.0 MB in the beginning and 144.2 MB in the end (delta: -2.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:21:03,282 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 165.7 MB. Free memory is still 136.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:21:03,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.43 ms. Allocated memory is still 165.7 MB. Free memory was 140.8 MB in the beginning and 131.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-19 17:21:03,288 INFO L168 Benchmark]: Boogie Preprocessor took 34.57 ms. Allocated memory is still 165.7 MB. Free memory was 131.3 MB in the beginning and 129.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:21:03,290 INFO L168 Benchmark]: RCFGBuilder took 413.64 ms. Allocated memory is still 165.7 MB. Free memory was 129.9 MB in the beginning and 118.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:21:03,291 INFO L168 Benchmark]: TraceAbstraction took 523.25 ms. Allocated memory is still 165.7 MB. Free memory was 117.9 MB in the beginning and 144.2 MB in the end (delta: -26.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:21:03,299 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 165.7 MB. Free memory is still 136.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.43 ms. Allocated memory is still 165.7 MB. Free memory was 140.8 MB in the beginning and 131.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.57 ms. Allocated memory is still 165.7 MB. Free memory was 131.3 MB in the beginning and 129.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 413.64 ms. Allocated memory is still 165.7 MB. Free memory was 129.9 MB in the beginning and 118.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 523.25 ms. Allocated memory is still 165.7 MB. Free memory was 117.9 MB in the beginning and 144.2 MB in the end (delta: -26.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 8. Possible FailurePath: [L7] unsigned char port = 0x5a; [L8] unsigned char result_8 = ( ~port ) >> 4; VAL [port=90, result_8=250] [L9] COND TRUE result_8 == 0xfa VAL [port=90, result_8=250] [L14] reach_error() VAL [port=90, result_8=250] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 Received shutdown request...