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/loops/trex01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:29:43,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:29:43,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:29:43,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:29:43,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:29:43,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:29:43,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:29:43,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:29:43,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:29:43,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:29:43,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:29:43,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 11:29:43,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:29:43,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:29:43,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:29:43,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:29:43,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:29:43,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:29:43,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:29:43,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:29:43,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:29:43,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:29:43,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:29:43,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:29:43,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 11:29:43,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 11:29:43,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 11:29:43,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 11:29:43,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 11:29:43,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 11:29:43,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 11:29:43,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 11:29:43,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 11:29:43,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 11:29:43,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 11:29:43,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 11:29:43,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 11:29:43,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 11:29:43,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:29:43,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:29:43,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:29:43,565 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 11:29:43,582 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:29:43,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:29:43,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:29:43,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:29:43,584 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:29:43,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:29:43,585 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:29:43,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:29:43,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:29:43,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:29:43,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:29:43,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:29:43,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:29:43,586 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:29:43,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:29:43,587 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:29:43,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:29:43,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:29:43,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:29:43,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:29:43,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:29:43,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:29:43,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:29:43,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:29:43,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:29:43,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:29:43,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:29:43,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:29:43,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:29:43,617 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:29:43,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:29:43,633 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:29:43,634 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:29:43,635 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:29:43,636 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-1.c [2019-10-02 11:29:43,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39cfd111/6c3c19d6c5c14f94b5783135e0d3c95f/FLAG818eb1646 [2019-10-02 11:29:44,111 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:29:44,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-1.c [2019-10-02 11:29:44,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39cfd111/6c3c19d6c5c14f94b5783135e0d3c95f/FLAG818eb1646 [2019-10-02 11:29:44,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39cfd111/6c3c19d6c5c14f94b5783135e0d3c95f [2019-10-02 11:29:44,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:29:44,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:29:44,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:29:44,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:29:44,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:29:44,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:29:44" (1/1) ... [2019-10-02 11:29:44,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538e7e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:44, skipping insertion in model container [2019-10-02 11:29:44,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:29:44" (1/1) ... [2019-10-02 11:29:44,596 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:29:44,618 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:29:44,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:29:44,815 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:29:44,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:29:44,849 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:29:44,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:44 WrapperNode [2019-10-02 11:29:44,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:29:44,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:29:44,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:29:44,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:29:44,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:44" (1/1) ... [2019-10-02 11:29:44,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:44" (1/1) ... [2019-10-02 11:29:44,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:44" (1/1) ... [2019-10-02 11:29:44,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:44" (1/1) ... [2019-10-02 11:29:44,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:44" (1/1) ... [2019-10-02 11:29:44,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:44" (1/1) ... [2019-10-02 11:29:44,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:44" (1/1) ... [2019-10-02 11:29:44,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:29:44,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:29:44,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:29:44,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:29:44,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:44" (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 11:29:45,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:29:45,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:29:45,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 11:29:45,034 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-10-02 11:29:45,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:29:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:29:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:29:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-02 11:29:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 11:29:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-10-02 11:29:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:29:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:29:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:29:45,245 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:29:45,245 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-02 11:29:45,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:29:45 BoogieIcfgContainer [2019-10-02 11:29:45,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:29:45,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:29:45,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:29:45,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:29:45,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:29:44" (1/3) ... [2019-10-02 11:29:45,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d2b356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:29:45, skipping insertion in model container [2019-10-02 11:29:45,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:44" (2/3) ... [2019-10-02 11:29:45,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d2b356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:29:45, skipping insertion in model container [2019-10-02 11:29:45,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:29:45" (3/3) ... [2019-10-02 11:29:45,254 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-1.c [2019-10-02 11:29:45,263 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:29:45,270 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:29:45,286 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:29:45,314 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:29:45,314 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:29:45,314 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:29:45,314 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:29:45,315 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:29:45,315 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:29:45,315 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:29:45,315 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:29:45,315 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:29:45,329 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-02 11:29:45,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 11:29:45,334 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:29:45,334 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:29:45,336 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:29:45,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:29:45,341 INFO L82 PathProgramCache]: Analyzing trace with hash -355556993, now seen corresponding path program 1 times [2019-10-02 11:29:45,342 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:29:45,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:29:45,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:29:45,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:29:45,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:29:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:29:45,456 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 11:29:45,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:29:45,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 11:29:45,461 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 11:29:45,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 11:29:45,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:29:45,473 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-10-02 11:29:45,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:29:45,492 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2019-10-02 11:29:45,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 11:29:45,494 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-02 11:29:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:29:45,502 INFO L225 Difference]: With dead ends: 45 [2019-10-02 11:29:45,503 INFO L226 Difference]: Without dead ends: 16 [2019-10-02 11:29:45,506 INFO L640 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 [2019-10-02 11:29:45,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-02 11:29:45,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-02 11:29:45,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-02 11:29:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-10-02 11:29:45,545 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-10-02 11:29:45,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:29:45,545 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-10-02 11:29:45,546 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 11:29:45,546 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-10-02 11:29:45,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 11:29:45,547 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:29:45,547 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:29:45,547 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:29:45,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:29:45,548 INFO L82 PathProgramCache]: Analyzing trace with hash -359251077, now seen corresponding path program 1 times [2019-10-02 11:29:45,548 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:29:45,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:29:45,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:29:45,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:29:45,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:29:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-02 11:29:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-02 11:29:45,626 INFO L478 BasicCegarLoop]: Counterexample might be feasible [2019-10-02 11:29:45,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:29:45 BoogieIcfgContainer [2019-10-02 11:29:45,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 11:29:45,659 INFO L168 Benchmark]: Toolchain (without parser) took 1080.05 ms. Allocated memory was 133.7 MB in the beginning and 200.8 MB in the end (delta: 67.1 MB). Free memory was 89.0 MB in the beginning and 140.7 MB in the end (delta: -51.7 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:29:45,661 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 133.7 MB. Free memory was 107.8 MB in the beginning and 107.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 11:29:45,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.03 ms. Allocated memory is still 133.7 MB. Free memory was 88.8 MB in the beginning and 79.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-02 11:29:45,666 INFO L168 Benchmark]: Boogie Preprocessor took 117.50 ms. Allocated memory was 133.7 MB in the beginning and 200.8 MB in the end (delta: 67.1 MB). Free memory was 79.2 MB in the beginning and 176.9 MB in the end (delta: -97.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-10-02 11:29:45,667 INFO L168 Benchmark]: RCFGBuilder took 277.32 ms. Allocated memory is still 200.8 MB. Free memory was 176.9 MB in the beginning and 163.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-10-02 11:29:45,669 INFO L168 Benchmark]: TraceAbstraction took 406.80 ms. Allocated memory is still 200.8 MB. Free memory was 163.2 MB in the beginning and 140.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:29:45,681 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 133.7 MB. Free memory was 107.8 MB in the beginning and 107.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.03 ms. Allocated memory is still 133.7 MB. Free memory was 88.8 MB in the beginning and 79.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.50 ms. Allocated memory was 133.7 MB in the beginning and 200.8 MB in the end (delta: 67.1 MB). Free memory was 79.2 MB in the beginning and 176.9 MB in the end (delta: -97.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 277.32 ms. Allocated memory is still 200.8 MB. Free memory was 176.9 MB in the beginning and 163.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 406.80 ms. Allocated memory is still 200.8 MB. Free memory was 163.2 MB in the beginning and 140.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L34] _Bool c = __VERIFIER_nondet_bool(); [L35] COND FALSE !(\read(c)) VAL [c=0] [L38] CALL f(2) VAL [\old(d)=2] [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1] [L14] COND FALSE !(!(k <= 1073741823)) VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1] [L17] COND FALSE !(z < k) VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1] [L18] CALL __VERIFIER_assert(z>=2) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...