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/loop-invariants/even.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:32:23,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:32:23,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:32:23,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:32:23,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:32:23,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:32:23,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:32:23,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:32:23,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:32:23,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:32:23,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:32:23,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:32:23,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:32:23,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:32:23,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:32:23,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:32:23,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:32:23,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:32:23,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:32:23,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:32:23,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:32:23,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:32:23,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:32:23,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:32:23,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:32:23,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:32:23,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:32:23,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:32:23,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:32:23,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:32:23,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:32:23,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:32:23,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:32:23,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:32:23,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:32:23,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:32:23,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:32:23,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:32:23,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:32:23,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:32:23,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:32:23,461 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 [2019-10-03 02:32:23,476 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:32:23,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:32:23,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:32:23,477 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:32:23,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:32:23,478 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:32:23,478 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:32:23,478 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:32:23,478 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:32:23,478 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:32:23,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:32:23,479 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:32:23,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:32:23,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:32:23,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:32:23,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:32:23,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:32:23,480 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:32:23,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:32:23,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:32:23,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:32:23,481 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:32:23,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:32:23,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:32:23,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:32:23,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:32:23,482 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:32:23,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:32:23,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:32:23,483 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:32:23,511 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:32:23,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:32:23,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:32:23,528 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:32:23,528 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:32:23,529 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/even.c [2019-10-03 02:32:23,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d847b475/41995b4510c7409ba55041b833672f9a/FLAGb9ea7bf07 [2019-10-03 02:32:23,989 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:32:23,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/even.c [2019-10-03 02:32:23,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d847b475/41995b4510c7409ba55041b833672f9a/FLAGb9ea7bf07 [2019-10-03 02:32:24,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d847b475/41995b4510c7409ba55041b833672f9a [2019-10-03 02:32:24,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:32:24,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:32:24,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:32:24,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:32:24,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:32:24,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:32:24" (1/1) ... [2019-10-03 02:32:24,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef99201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:24, skipping insertion in model container [2019-10-03 02:32:24,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:32:24" (1/1) ... [2019-10-03 02:32:24,383 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:32:24,402 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:32:24,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:32:24,621 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:32:24,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:32:24,647 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:32:24,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:24 WrapperNode [2019-10-03 02:32:24,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:32:24,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:32:24,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:32:24,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:32:24,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:24" (1/1) ... [2019-10-03 02:32:24,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:24" (1/1) ... [2019-10-03 02:32:24,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:24" (1/1) ... [2019-10-03 02:32:24,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:24" (1/1) ... [2019-10-03 02:32:24,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:24" (1/1) ... [2019-10-03 02:32:24,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:24" (1/1) ... [2019-10-03 02:32:24,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:24" (1/1) ... [2019-10-03 02:32:24,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:32:24,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:32:24,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:32:24,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:32:24,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:24" (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 [2019-10-03 02:32:24,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:32:24,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:32:24,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-03 02:32:24,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:32:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:32:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:32:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-03 02:32:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:32:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:32:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:32:24,988 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:32:24,988 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-03 02:32:24,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:32:24 BoogieIcfgContainer [2019-10-03 02:32:24,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:32:24,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:32:24,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:32:24,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:32:24,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:32:24" (1/3) ... [2019-10-03 02:32:24,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54dc7380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:32:24, skipping insertion in model container [2019-10-03 02:32:24,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:24" (2/3) ... [2019-10-03 02:32:24,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54dc7380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:32:24, skipping insertion in model container [2019-10-03 02:32:24,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:32:24" (3/3) ... [2019-10-03 02:32:24,997 INFO L109 eAbstractionObserver]: Analyzing ICFG even.c [2019-10-03 02:32:25,007 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:32:25,014 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:32:25,030 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:32:25,052 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:32:25,052 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:32:25,052 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:32:25,052 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:32:25,052 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:32:25,053 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:32:25,053 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:32:25,053 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:32:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-03 02:32:25,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-03 02:32:25,076 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:32:25,077 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:32:25,080 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:32:25,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:32:25,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2019-10-03 02:32:25,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:32:25,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:32:25,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:32:25,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:32:25,129 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:32:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:32:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:32:25,183 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:32:25,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:32:25,183 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:32:25,187 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:32:25,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:32:25,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:32:25,205 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-03 02:32:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:32:25,219 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-10-03 02:32:25,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:32:25,220 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-03 02:32:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:32:25,229 INFO L225 Difference]: With dead ends: 19 [2019-10-03 02:32:25,230 INFO L226 Difference]: Without dead ends: 12 [2019-10-03 02:32:25,232 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 [2019-10-03 02:32:25,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-03 02:32:25,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-03 02:32:25,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-03 02:32:25,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-03 02:32:25,267 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-03 02:32:25,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:32:25,268 INFO L475 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-03 02:32:25,268 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:32:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-03 02:32:25,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-03 02:32:25,269 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:32:25,269 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:32:25,270 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:32:25,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:32:25,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1890620952, now seen corresponding path program 1 times [2019-10-03 02:32:25,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:32:25,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:32:25,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:32:25,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:32:25,273 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:32:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:32:25,578 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2019-10-03 02:32:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:32:25,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:32:25,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 02:32:25,606 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:32:25,607 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:32:25,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:32:25,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:32:25,609 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-10-03 02:32:25,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:32:25,652 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-10-03 02:32:25,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:32:25,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-03 02:32:25,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:32:25,654 INFO L225 Difference]: With dead ends: 10 [2019-10-03 02:32:25,654 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:32:25,655 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:32:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:32:25,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:32:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:32:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:32:25,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-10-03 02:32:25,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:32:25,657 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:32:25,657 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:32:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:32:25,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:32:25,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:32:25 BoogieIcfgContainer [2019-10-03 02:32:25,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:32:25,665 INFO L168 Benchmark]: Toolchain (without parser) took 1300.20 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 89.4 MB in the beginning and 133.6 MB in the end (delta: -44.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:25,666 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 133.2 MB. Free memory was 107.4 MB in the beginning and 107.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:32:25,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.30 ms. Allocated memory is still 133.2 MB. Free memory was 89.2 MB in the beginning and 80.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:25,669 INFO L168 Benchmark]: Boogie Preprocessor took 113.05 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 80.0 MB in the beginning and 177.8 MB in the end (delta: -97.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:25,670 INFO L168 Benchmark]: RCFGBuilder took 227.21 ms. Allocated memory is still 200.8 MB. Free memory was 177.8 MB in the beginning and 166.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:25,671 INFO L168 Benchmark]: TraceAbstraction took 672.88 ms. Allocated memory is still 200.8 MB. Free memory was 166.2 MB in the beginning and 133.6 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:25,677 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 133.2 MB. Free memory was 107.4 MB in the beginning and 107.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.30 ms. Allocated memory is still 133.2 MB. Free memory was 89.2 MB in the beginning and 80.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.05 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 80.0 MB in the beginning and 177.8 MB in the end (delta: -97.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 227.21 ms. Allocated memory is still 200.8 MB. Free memory was 177.8 MB in the beginning and 166.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 672.88 ms. Allocated memory is still 200.8 MB. Free memory was 166.2 MB in the beginning and 133.6 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 1 SDslu, 20 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 901 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...