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 -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/bitvector/parity.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:44:05,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:44:05,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:44:05,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 05:44:05,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 05:44:05,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 05:44:05,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 05:44:05,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 05:44:05,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 05:44:05,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 05:44:05,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 05:44:05,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 05:44:05,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:44:05,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:44:05,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:44:05,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:44:05,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:44:05,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:44:05,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:44:05,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:44:05,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:44:05,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:44:05,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:44:05,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:44:05,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 05:44:05,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:44:05,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:44:05,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:44:05,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:44:05,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:44:05,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:44:05,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:44:05,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:44:05,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:44:05,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:44:05,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:44:05,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 05:44:05,934 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:44:05,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:44:05,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:44:05,935 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:44:05,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:44:05,936 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:44:05,936 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:44:05,936 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:44:05,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:44:05,937 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:44:05,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:44:05,938 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:44:05,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:44:05,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:44:05,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:44:05,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:44:05,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:44:05,939 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:44:05,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:44:05,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:44:05,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:44:05,940 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:44:05,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:44:05,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:44:05,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:44:05,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:44:05,941 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:44:05,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:44:05,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:44:05,941 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:44:05,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:44:05,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:44:05,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:44:05,985 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:44:05,985 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:44:05,986 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/parity.i [2019-09-09 05:44:06,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de441952f/334d22f237e14aedb9919ef660785337/FLAG8e317557d [2019-09-09 05:44:06,471 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:44:06,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/parity.i [2019-09-09 05:44:06,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de441952f/334d22f237e14aedb9919ef660785337/FLAG8e317557d [2019-09-09 05:44:06,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de441952f/334d22f237e14aedb9919ef660785337 [2019-09-09 05:44:06,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:44:06,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:44:06,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:44:06,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:44:06,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:44:06,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:44:06" (1/1) ... [2019-09-09 05:44:06,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350286e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:44:06, skipping insertion in model container [2019-09-09 05:44:06,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:44:06" (1/1) ... [2019-09-09 05:44:06,914 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:44:06,930 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:44:07,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:44:07,129 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:44:07,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:44:07,173 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:44:07,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:44:07 WrapperNode [2019-09-09 05:44:07,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:44:07,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:44:07,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:44:07,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:44:07,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:44:07" (1/1) ... [2019-09-09 05:44:07,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:44:07" (1/1) ... [2019-09-09 05:44:07,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:44:07" (1/1) ... [2019-09-09 05:44:07,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:44:07" (1/1) ... [2019-09-09 05:44:07,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:44:07" (1/1) ... [2019-09-09 05:44:07,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:44:07" (1/1) ... [2019-09-09 05:44:07,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:44:07" (1/1) ... [2019-09-09 05:44:07,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:44:07,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:44:07,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:44:07,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:44:07,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:44:07" (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 [2019-09-09 05:44:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:44:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:44:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:44:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:44:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:44:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-09 05:44:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:44:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-09 05:44:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-09-09 05:44:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-09-09 05:44:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:44:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:44:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:44:07,558 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:44:07,558 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 05:44:07,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:44:07 BoogieIcfgContainer [2019-09-09 05:44:07,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:44:07,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:44:07,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:44:07,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:44:07,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:44:06" (1/3) ... [2019-09-09 05:44:07,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4a704c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:44:07, skipping insertion in model container [2019-09-09 05:44:07,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:44:07" (2/3) ... [2019-09-09 05:44:07,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4a704c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:44:07, skipping insertion in model container [2019-09-09 05:44:07,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:44:07" (3/3) ... [2019-09-09 05:44:07,568 INFO L109 eAbstractionObserver]: Analyzing ICFG parity.i [2019-09-09 05:44:07,578 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:44:07,585 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:44:07,601 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:44:07,628 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:44:07,628 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:44:07,628 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:44:07,628 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:44:07,628 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:44:07,628 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:44:07,628 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:44:07,628 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:44:07,641 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-09 05:44:07,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-09 05:44:07,650 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:44:07,650 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:44:07,652 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:44:07,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:44:07,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1135268867, now seen corresponding path program 1 times [2019-09-09 05:44:07,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:44:07,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:44:07,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:44:07,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:44:07,700 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:44:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:44:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:44:07,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:44:07,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:44:07,759 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:44:07,763 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:44:07,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:44:07,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:44:07,776 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-09 05:44:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:44:07,792 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-09-09 05:44:07,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:44:07,794 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-09-09 05:44:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:44:07,804 INFO L225 Difference]: With dead ends: 22 [2019-09-09 05:44:07,805 INFO L226 Difference]: Without dead ends: 15 [2019-09-09 05:44:07,807 INFO L628 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 [2019-09-09 05:44:07,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-09 05:44:07,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-09 05:44:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-09 05:44:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-09-09 05:44:07,847 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2019-09-09 05:44:07,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:44:07,847 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-09-09 05:44:07,847 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:44:07,848 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-09-09 05:44:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-09 05:44:07,848 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:44:07,848 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:44:07,849 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:44:07,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:44:07,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1987092530, now seen corresponding path program 1 times [2019-09-09 05:44:07,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:44:07,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:44:07,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:44:07,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:44:07,851 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:44:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:44:08,146 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2019-09-09 05:44:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:44:08,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:44:08,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 05:44:08,182 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:44:08,185 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 05:44:08,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 05:44:08,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-09 05:44:08,187 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2019-09-09 05:44:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:44:08,283 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-09-09 05:44:08,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-09 05:44:08,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-09-09 05:44:08,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:44:08,286 INFO L225 Difference]: With dead ends: 24 [2019-09-09 05:44:08,286 INFO L226 Difference]: Without dead ends: 21 [2019-09-09 05:44:08,287 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-09 05:44:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-09 05:44:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-09-09 05:44:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-09 05:44:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-09-09 05:44:08,294 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2019-09-09 05:44:08,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:44:08,295 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-09-09 05:44:08,295 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 05:44:08,295 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-09-09 05:44:08,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-09 05:44:08,296 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:44:08,296 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:44:08,297 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:44:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:44:08,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1988939572, now seen corresponding path program 1 times [2019-09-09 05:44:08,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:44:08,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:44:08,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:44:08,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:44:08,299 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:44:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-09 05:44:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-09 05:44:08,342 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-09 05:44:08,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:44:08 BoogieIcfgContainer [2019-09-09 05:44:08,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:44:08,371 INFO L168 Benchmark]: Toolchain (without parser) took 1472.60 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 91.1 MB in the beginning and 127.4 MB in the end (delta: -36.2 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2019-09-09 05:44:08,372 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:44:08,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.49 ms. Allocated memory is still 134.7 MB. Free memory was 90.9 MB in the beginning and 81.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-09 05:44:08,374 INFO L168 Benchmark]: Boogie Preprocessor took 123.07 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 81.2 MB in the beginning and 176.9 MB in the end (delta: -95.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-09 05:44:08,375 INFO L168 Benchmark]: RCFGBuilder took 261.94 ms. Allocated memory is still 200.8 MB. Free memory was 176.9 MB in the beginning and 164.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2019-09-09 05:44:08,376 INFO L168 Benchmark]: TraceAbstraction took 807.93 ms. Allocated memory is still 200.8 MB. Free memory was 164.4 MB in the beginning and 127.4 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2019-09-09 05:44:08,380 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.49 ms. Allocated memory is still 134.7 MB. Free memory was 90.9 MB in the beginning and 81.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.07 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 81.2 MB in the beginning and 176.9 MB in the end (delta: -95.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 261.94 ms. Allocated memory is still 200.8 MB. Free memory was 176.9 MB in the beginning and 164.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 807.93 ms. Allocated memory is still 200.8 MB. Free memory was 164.4 MB in the beginning and 127.4 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 43, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L23] unsigned int v = __VERIFIER_nondet_uint(); [L24] unsigned int v1; [L25] unsigned int v2; [L26] char parity1; [L27] char parity2; [L28] v1 = v [L29] parity1 = (char)0 VAL [parity1=0, v=0, v1=0] [L30] COND FALSE !(v1 != 0) VAL [parity1=0, v=0, v1=0] [L38] v2 = v [L39] parity2 = (char)0 [L40] v2 = v2 ^ (v2 >> 1u) [L41] v2 = v2 ^ (v2 >> 2u) [L42] v2 = (v2 & 286331153U) * 286331153U VAL [parity1=0, parity2=0, v=0, v1=0, v2=0] [L43] COND FALSE !(((v2 >> 28u) & 1u) == 0) [L46] parity2 = (char)1 VAL [parity1=0, parity2=1, v=0, v1=0, v2=0] [L48] CALL __VERIFIER_assert(parity1 == parity2) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 5 SDslu, 54 SDs, 0 SdLazy, 17 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 594 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...