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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 10:18:44,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 10:18:44,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 10:18:44,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 10:18:44,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 10:18:44,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 10:18:44,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 10:18:44,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 10:18:44,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 10:18:44,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 10:18:44,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 10:18:44,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 10:18:44,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 10:18:44,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 10:18:44,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 10:18:44,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 10:18:44,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 10:18:44,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 10:18:44,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 10:18:44,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 10:18:44,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 10:18:44,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 10:18:44,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 10:18:44,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 10:18:44,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 10:18:44,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 10:18:44,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 10:18:44,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 10:18:44,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 10:18:44,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 10:18:44,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 10:18:44,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 10:18:44,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 10:18:44,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 10:18:44,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 10:18:44,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 10:18:44,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 10:18:44,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 10:18:44,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 10:18:44,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 10:18:44,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 10:18:44,883 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 [2019-10-02 10:18:44,904 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 10:18:44,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 10:18:44,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 10:18:44,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 10:18:44,908 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 10:18:44,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 10:18:44,908 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 10:18:44,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 10:18:44,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 10:18:44,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 10:18:44,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 10:18:44,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 10:18:44,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 10:18:44,911 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 10:18:44,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 10:18:44,911 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 10:18:44,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 10:18:44,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 10:18:44,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 10:18:44,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 10:18:44,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 10:18:44,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 10:18:44,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 10:18:44,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 10:18:44,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 10:18:44,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 10:18:44,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 10:18:44,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 10:18:44,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 10:18:44,965 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 10:18:44,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 10:18:44,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 10:18:44,987 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 10:18:44,987 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 10:18:44,988 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test14.c [2019-10-02 10:18:45,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c5295a31/43b32467cb3746cbb8ca0b19962b6b7e/FLAGa8f670055 [2019-10-02 10:18:45,483 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 10:18:45,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test14.c [2019-10-02 10:18:45,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c5295a31/43b32467cb3746cbb8ca0b19962b6b7e/FLAGa8f670055 [2019-10-02 10:18:45,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c5295a31/43b32467cb3746cbb8ca0b19962b6b7e [2019-10-02 10:18:45,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 10:18:45,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 10:18:45,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 10:18:45,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 10:18:45,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 10:18:45,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:18:45" (1/1) ... [2019-10-02 10:18:45,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6758b41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:45, skipping insertion in model container [2019-10-02 10:18:45,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:18:45" (1/1) ... [2019-10-02 10:18:45,884 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 10:18:45,898 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 10:18:46,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 10:18:46,056 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 10:18:46,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 10:18:46,084 INFO L192 MainTranslator]: Completed translation [2019-10-02 10:18:46,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:46 WrapperNode [2019-10-02 10:18:46,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 10:18:46,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 10:18:46,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 10:18:46,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 10:18:46,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:46" (1/1) ... [2019-10-02 10:18:46,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:46" (1/1) ... [2019-10-02 10:18:46,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:46" (1/1) ... [2019-10-02 10:18:46,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:46" (1/1) ... [2019-10-02 10:18:46,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:46" (1/1) ... [2019-10-02 10:18:46,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:46" (1/1) ... [2019-10-02 10:18:46,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:46" (1/1) ... [2019-10-02 10:18:46,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 10:18:46,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 10:18:46,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 10:18:46,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 10:18:46,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:46" (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 [2019-10-02 10:18:46,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 10:18:46,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 10:18:46,270 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-10-02 10:18:46,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 10:18:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 10:18:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 10:18:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-02 10:18:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-10-02 10:18:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 10:18:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 10:18:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-02 10:18:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 10:18:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 10:18:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 10:18:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 10:18:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 10:18:46,534 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 10:18:46,535 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-02 10:18:46,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:18:46 BoogieIcfgContainer [2019-10-02 10:18:46,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 10:18:46,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 10:18:46,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 10:18:46,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 10:18:46,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:18:45" (1/3) ... [2019-10-02 10:18:46,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70eaf620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:18:46, skipping insertion in model container [2019-10-02 10:18:46,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:46" (2/3) ... [2019-10-02 10:18:46,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70eaf620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:18:46, skipping insertion in model container [2019-10-02 10:18:46,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:18:46" (3/3) ... [2019-10-02 10:18:46,559 INFO L109 eAbstractionObserver]: Analyzing ICFG test14.c [2019-10-02 10:18:46,580 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 10:18:46,596 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 10:18:46,612 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 10:18:46,648 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 10:18:46,649 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 10:18:46,649 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 10:18:46,649 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 10:18:46,649 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 10:18:46,650 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 10:18:46,650 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 10:18:46,650 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 10:18:46,650 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 10:18:46,663 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-02 10:18:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-02 10:18:46,669 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:18:46,670 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 10:18:46,672 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:18:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:18:46,678 INFO L82 PathProgramCache]: Analyzing trace with hash 521841741, now seen corresponding path program 1 times [2019-10-02 10:18:46,680 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:18:46,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:18:46,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:18:46,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:18:46,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:18:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:18:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 10:18:46,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:18:46,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 10:18:46,882 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 10:18:46,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 10:18:46,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 10:18:46,896 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2019-10-02 10:18:46,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:18:46,958 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-10-02 10:18:46,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 10:18:46,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-02 10:18:46,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:18:46,973 INFO L225 Difference]: With dead ends: 29 [2019-10-02 10:18:46,973 INFO L226 Difference]: Without dead ends: 18 [2019-10-02 10:18:46,978 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 10:18:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-02 10:18:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-02 10:18:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-02 10:18:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-02 10:18:47,010 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2019-10-02 10:18:47,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:18:47,011 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-02 10:18:47,011 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 10:18:47,012 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-02 10:18:47,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-02 10:18:47,012 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:18:47,012 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 10:18:47,013 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:18:47,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:18:47,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1019657549, now seen corresponding path program 1 times [2019-10-02 10:18:47,013 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:18:47,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:18:47,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:18:47,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:18:47,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:18:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:18:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 10:18:47,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:18:47,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 10:18:47,146 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 10:18:47,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 10:18:47,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-02 10:18:47,148 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2019-10-02 10:18:47,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:18:47,207 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-10-02 10:18:47,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 10:18:47,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-10-02 10:18:47,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:18:47,209 INFO L225 Difference]: With dead ends: 18 [2019-10-02 10:18:47,209 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 10:18:47,210 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-02 10:18:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 10:18:47,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 10:18:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 10:18:47,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 10:18:47,211 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-02 10:18:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:18:47,212 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 10:18:47,212 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 10:18:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 10:18:47,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 10:18:47,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-02 10:18:47,250 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-02 10:18:47,251 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-02 10:18:47,251 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-02 10:18:47,251 INFO L443 ceAbstractionStarter]: For program point get_dummyFINAL(lines 7 10) no Hoare annotation was computed. [2019-10-02 10:18:47,251 INFO L443 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-10-02 10:18:47,251 INFO L446 ceAbstractionStarter]: At program point get_dummyENTRY(lines 7 10) the Hoare annotation is: true [2019-10-02 10:18:47,252 INFO L443 ceAbstractionStarter]: For program point get_dummyEXIT(lines 7 10) no Hoare annotation was computed. [2019-10-02 10:18:47,252 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-02 10:18:47,252 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-02 10:18:47,252 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-02 10:18:47,252 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-02 10:18:47,253 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2019-10-02 10:18:47,253 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 27) the Hoare annotation is: true [2019-10-02 10:18:47,253 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2019-10-02 10:18:47,253 INFO L439 ceAbstractionStarter]: At program point L20(lines 12 27) the Hoare annotation is: false [2019-10-02 10:18:47,254 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-02 10:18:47,254 INFO L443 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2019-10-02 10:18:47,254 INFO L439 ceAbstractionStarter]: At program point L17(line 17) the Hoare annotation is: (not (= main_~pc~0.base 0)) [2019-10-02 10:18:47,254 INFO L443 ceAbstractionStarter]: For program point L19-2(line 19) no Hoare annotation was computed. [2019-10-02 10:18:47,254 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-10-02 10:18:47,255 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 21) no Hoare annotation was computed. [2019-10-02 10:18:47,255 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2019-10-02 10:18:47,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 10:18:47 BoogieIcfgContainer [2019-10-02 10:18:47,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 10:18:47,266 INFO L168 Benchmark]: Toolchain (without parser) took 1395.20 ms. Allocated memory was 137.9 MB in the beginning and 197.7 MB in the end (delta: 59.8 MB). Free memory was 85.6 MB in the beginning and 116.1 MB in the end (delta: -30.6 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2019-10-02 10:18:47,267 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 137.9 MB. Free memory was 104.0 MB in the beginning and 103.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 10:18:47,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.22 ms. Allocated memory is still 137.9 MB. Free memory was 85.4 MB in the beginning and 75.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-02 10:18:47,269 INFO L168 Benchmark]: Boogie Preprocessor took 123.22 ms. Allocated memory was 137.9 MB in the beginning and 197.7 MB in the end (delta: 59.8 MB). Free memory was 75.6 MB in the beginning and 175.0 MB in the end (delta: -99.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-10-02 10:18:47,270 INFO L168 Benchmark]: RCFGBuilder took 334.83 ms. Allocated memory is still 197.7 MB. Free memory was 174.3 MB in the beginning and 158.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2019-10-02 10:18:47,271 INFO L168 Benchmark]: TraceAbstraction took 718.63 ms. Allocated memory is still 197.7 MB. Free memory was 158.9 MB in the beginning and 116.1 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2019-10-02 10:18:47,275 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 137.9 MB. Free memory was 104.0 MB in the beginning and 103.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 214.22 ms. Allocated memory is still 137.9 MB. Free memory was 85.4 MB in the beginning and 75.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.22 ms. Allocated memory was 137.9 MB in the beginning and 197.7 MB in the end (delta: 59.8 MB). Free memory was 75.6 MB in the beginning and 175.0 MB in the end (delta: -99.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.83 ms. Allocated memory is still 197.7 MB. Free memory was 174.3 MB in the beginning and 158.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 718.63 ms. Allocated memory is still 197.7 MB. Free memory was 158.9 MB in the beginning and 116.1 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 19 SDslu, 63 SDs, 0 SdLazy, 12 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 10 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 966 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 proved your program to be correct! Received shutdown request...