/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:01:36,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:01:36,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:01:36,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:01:36,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:01:36,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:01:36,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:01:36,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:01:36,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:01:36,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:01:36,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:01:36,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:01:36,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:01:36,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:01:36,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:01:36,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:01:36,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:01:36,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:01:36,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:01:36,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:01:36,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:01:36,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:01:36,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:01:36,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:01:36,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:01:36,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:01:36,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:01:36,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:01:36,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:01:36,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:01:36,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:01:36,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:01:36,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:01:36,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:01:36,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:01:36,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:01:36,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:01:36,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:01:36,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:01:36,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:01:36,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:01:36,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 16:01:36,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:01:36,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:01:36,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:01:36,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:01:36,532 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:01:36,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:01:36,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:01:36,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:01:36,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:01:36,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:01:36,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:01:36,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:01:36,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:01:36,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:01:36,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:01:36,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:01:36,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:01:36,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:01:36,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:01:36,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:01:36,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:01:36,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:01:36,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:01:36,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:01:36,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:01:36,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:01:36,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:01:36,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:01:36,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:01:36,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:01:36,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:01:36,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:01:36,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:01:36,836 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:01:36,836 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:01:36,837 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2020-10-12 16:01:36,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cbc00736/ef5a76d4eb034fa8a25da280adaa2447/FLAGfc49879aa [2020-10-12 16:01:37,312 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:01:37,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2020-10-12 16:01:37,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cbc00736/ef5a76d4eb034fa8a25da280adaa2447/FLAGfc49879aa [2020-10-12 16:01:37,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cbc00736/ef5a76d4eb034fa8a25da280adaa2447 [2020-10-12 16:01:37,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:01:37,727 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:01:37,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:01:37,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:01:37,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:01:37,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:01:37" (1/1) ... [2020-10-12 16:01:37,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49edf284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:01:37, skipping insertion in model container [2020-10-12 16:01:37,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:01:37" (1/1) ... [2020-10-12 16:01:37,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:01:37,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:01:37,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:01:37,933 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:01:37,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:01:37,961 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:01:37,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:01:37 WrapperNode [2020-10-12 16:01:37,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:01:37,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:01:37,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:01:37,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:01:37,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:01:37" (1/1) ... [2020-10-12 16:01:37,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:01:37" (1/1) ... [2020-10-12 16:01:37,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:01:37" (1/1) ... [2020-10-12 16:01:37,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:01:37" (1/1) ... [2020-10-12 16:01:38,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:01:37" (1/1) ... [2020-10-12 16:01:38,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:01:37" (1/1) ... [2020-10-12 16:01:38,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:01:37" (1/1) ... [2020-10-12 16:01:38,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:01:38,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:01:38,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:01:38,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:01:38,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:01:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 16:01:38,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:01:38,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:01:38,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:01:38,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:01:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:01:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2020-10-12 16:01:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:01:38,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:01:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:01:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:01:38,286 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:01:38,286 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:01:38,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:01:38 BoogieIcfgContainer [2020-10-12 16:01:38,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:01:38,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:01:38,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:01:38,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:01:38,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:01:37" (1/3) ... [2020-10-12 16:01:38,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ff30b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:01:38, skipping insertion in model container [2020-10-12 16:01:38,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:01:37" (2/3) ... [2020-10-12 16:01:38,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ff30b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:01:38, skipping insertion in model container [2020-10-12 16:01:38,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:01:38" (3/3) ... [2020-10-12 16:01:38,299 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_3-2.c [2020-10-12 16:01:38,309 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:01:38,316 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:01:38,327 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:01:38,348 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:01:38,348 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:01:38,349 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:01:38,349 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:01:38,349 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:01:38,349 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:01:38,349 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:01:38,350 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:01:38,363 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-10-12 16:01:38,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 16:01:38,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:01:38,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:01:38,370 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:01:38,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:01:38,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-10-12 16:01:38,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:01:38,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736751642] [2020-10-12 16:01:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:01:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:01:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:01:38,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:01:38,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 16:01:38,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:01:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 16:01:38,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:01:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:01:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:01:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:01:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 16:01:38,885 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 17 [2020-10-12 16:01:38,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:01:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:01:38,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:01:38,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:01:38,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:01:38,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:01:38,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:01:38,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:01:38,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:01:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:01:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:01:38,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:01:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:01:38,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736751642] [2020-10-12 16:01:38,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:01:38,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:01:38,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980631654] [2020-10-12 16:01:38,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:01:38,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:01:38,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:01:38,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:01:38,960 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-10-12 16:01:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:01:39,148 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-10-12 16:01:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:01:39,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-12 16:01:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:01:39,158 INFO L225 Difference]: With dead ends: 36 [2020-10-12 16:01:39,159 INFO L226 Difference]: Without dead ends: 12 [2020-10-12 16:01:39,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:01:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-12 16:01:39,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-12 16:01:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-12 16:01:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-12 16:01:39,196 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-10-12 16:01:39,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:01:39,197 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-12 16:01:39,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:01:39,197 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-12 16:01:39,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-12 16:01:39,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:01:39,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:01:39,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:01:39,199 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:01:39,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:01:39,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2020-10-12 16:01:39,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:01:39,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806286451] [2020-10-12 16:01:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:01:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:01:39,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:01:39,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:01:39,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 16:01:39,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:01:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 16:01:39,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:01:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:01:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:01:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:01:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:01:39,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:01:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:01:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:01:39,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:01:39,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:01:39,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:01:39,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:01:39,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:01:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:01:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:01:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:01:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:01:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:01:39,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806286451] [2020-10-12 16:01:39,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:01:39,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 16:01:39,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113447193] [2020-10-12 16:01:39,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:01:39,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:01:39,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:01:39,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:01:39,611 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2020-10-12 16:01:39,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:01:39,655 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-10-12 16:01:39,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:01:39,656 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-12 16:01:39,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:01:39,657 INFO L225 Difference]: With dead ends: 12 [2020-10-12 16:01:39,657 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 16:01:39,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:01:39,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 16:01:39,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 16:01:39,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 16:01:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 16:01:39,661 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-12 16:01:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:01:39,661 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 16:01:39,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:01:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 16:01:39,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 16:01:39,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:01:39,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 16:01:39,757 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 16:01:39,757 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:01:39,757 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:01:39,757 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 16:01:39,758 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 16:01:39,758 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:01:39,758 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 20) the Hoare annotation is: true [2020-10-12 16:01:39,758 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 20) no Hoare annotation was computed. [2020-10-12 16:01:39,759 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 17) the Hoare annotation is: (= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ (* .cse0 2) (* (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296) 4294967296)))) [2020-10-12 16:01:39,759 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 20) no Hoare annotation was computed. [2020-10-12 16:01:39,759 INFO L264 CegarLoopResult]: At program point L15-3(lines 15 17) the Hoare annotation is: (= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ (* .cse0 2) (* (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296) 4294967296)))) [2020-10-12 16:01:39,759 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-10-12 16:01:39,759 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-10-12 16:01:39,759 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-12 16:01:39,760 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-10-12 16:01:39,761 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-10-12 16:01:39,762 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-10-12 16:01:39,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:01:39 BoogieIcfgContainer [2020-10-12 16:01:39,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:01:39,790 INFO L168 Benchmark]: Toolchain (without parser) took 2060.37 ms. Allocated memory was 148.9 MB in the beginning and 232.8 MB in the end (delta: 83.9 MB). Free memory was 104.9 MB in the beginning and 201.7 MB in the end (delta: -96.8 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. [2020-10-12 16:01:39,792 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 16:01:39,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.87 ms. Allocated memory is still 148.9 MB. Free memory was 104.5 MB in the beginning and 95.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:01:39,794 INFO L168 Benchmark]: Boogie Preprocessor took 109.85 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 95.2 MB in the beginning and 184.6 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-12 16:01:39,796 INFO L168 Benchmark]: RCFGBuilder took 217.80 ms. Allocated memory is still 205.5 MB. Free memory was 184.6 MB in the beginning and 173.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-10-12 16:01:39,798 INFO L168 Benchmark]: TraceAbstraction took 1493.91 ms. Allocated memory was 205.5 MB in the beginning and 232.8 MB in the end (delta: 27.3 MB). Free memory was 172.4 MB in the beginning and 201.7 MB in the end (delta: -29.3 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-10-12 16:01:39,807 INFO L336 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 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.87 ms. Allocated memory is still 148.9 MB. Free memory was 104.5 MB in the beginning and 95.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.85 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 95.2 MB in the beginning and 184.6 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 217.80 ms. Allocated memory is still 205.5 MB. Free memory was 184.6 MB in the beginning and 173.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1493.91 ms. Allocated memory was 205.5 MB in the beginning and 232.8 MB in the end (delta: 27.3 MB). Free memory was 172.4 MB in the beginning and 201.7 MB in the end (delta: -29.3 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x == x / 2 * 2 + (x / 2 * -2 + x) / 4294967296 * 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 8 SDslu, 57 SDs, 0 SdLazy, 30 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 43 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 57 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1165 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...