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/loops/trex02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:37:00,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:37:00,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:37:00,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:37:00,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:37:00,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:37:00,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:37:00,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:37:00,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:37:00,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:37:00,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:37:00,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:37:00,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:37:00,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:37:00,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:37:00,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:37:00,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:37:00,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:37:00,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:37:00,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:37:00,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:37:00,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:37:00,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:37:00,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:37:00,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:37:00,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:37:00,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:37:00,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:37:00,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:37:00,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:37:00,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:37:00,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:37:00,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:37:00,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:37:00,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:37:00,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:37:00,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-03 20:37:00,732 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:37:00,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:37:00,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:37:00,733 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:37:00,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:37:00,734 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:37:00,734 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:37:00,735 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:37:00,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:37:00,735 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:37:00,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:37:00,737 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:37:00,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:37:00,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:37:00,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:37:00,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:37:00,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:37:00,738 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:37:00,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:37:00,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:37:00,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:37:00,739 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:37:00,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:37:00,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:37:00,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:37:00,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:37:00,741 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:37:00,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:37:00,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:37:00,741 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:37:00,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:37:00,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:37:00,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:37:00,810 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:37:00,810 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:37:00,811 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-2.c [2019-09-03 20:37:00,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa022db6d/fd1090e77ed3420099aa17db59e90547/FLAG1d8172f3e [2019-09-03 20:37:01,307 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:37:01,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-2.c [2019-09-03 20:37:01,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa022db6d/fd1090e77ed3420099aa17db59e90547/FLAG1d8172f3e [2019-09-03 20:37:01,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa022db6d/fd1090e77ed3420099aa17db59e90547 [2019-09-03 20:37:01,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:37:01,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:37:01,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:37:01,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:37:01,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:37:01,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:37:01" (1/1) ... [2019-09-03 20:37:01,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3817fa46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:01, skipping insertion in model container [2019-09-03 20:37:01,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:37:01" (1/1) ... [2019-09-03 20:37:01,779 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:37:01,794 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:37:01,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:37:01,965 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:37:01,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:37:01,990 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:37:01,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:01 WrapperNode [2019-09-03 20:37:01,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:37:01,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:37:01,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:37:01,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:37:02,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:01" (1/1) ... [2019-09-03 20:37:02,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:01" (1/1) ... [2019-09-03 20:37:02,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:01" (1/1) ... [2019-09-03 20:37:02,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:01" (1/1) ... [2019-09-03 20:37:02,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:01" (1/1) ... [2019-09-03 20:37:02,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:01" (1/1) ... [2019-09-03 20:37:02,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:01" (1/1) ... [2019-09-03 20:37:02,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:37:02,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:37:02,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:37:02,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:37:02,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:37:02,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:37:02,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:37:02,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:37:02,157 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-09-03 20:37:02,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:37:02,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:37:02,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:37:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-03 20:37:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 20:37:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-09-03 20:37:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:37:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:37:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:37:02,315 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:37:02,315 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 20:37:02,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:37:02 BoogieIcfgContainer [2019-09-03 20:37:02,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:37:02,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:37:02,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:37:02,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:37:02,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:37:01" (1/3) ... [2019-09-03 20:37:02,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa67196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:37:02, skipping insertion in model container [2019-09-03 20:37:02,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:01" (2/3) ... [2019-09-03 20:37:02,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa67196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:37:02, skipping insertion in model container [2019-09-03 20:37:02,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:37:02" (3/3) ... [2019-09-03 20:37:02,324 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-2.c [2019-09-03 20:37:02,333 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:37:02,340 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:37:02,355 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:37:02,380 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:37:02,380 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:37:02,380 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:37:02,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:37:02,381 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:37:02,381 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:37:02,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:37:02,381 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:37:02,392 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-03 20:37:02,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 20:37:02,399 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:37:02,400 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:37:02,402 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:37:02,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:37:02,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1873481772, now seen corresponding path program 1 times [2019-09-03 20:37:02,408 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:37:02,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:02,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:37:02,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:02,444 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:37:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:37:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:37:02,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:37:02,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:37:02,508 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:37:02,512 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:37:02,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:37:02,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:37:02,524 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-09-03 20:37:02,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:37:02,537 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-09-03 20:37:02,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:37:02,538 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-03 20:37:02,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:37:02,547 INFO L225 Difference]: With dead ends: 24 [2019-09-03 20:37:02,547 INFO L226 Difference]: Without dead ends: 18 [2019-09-03 20:37:02,549 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:37:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-03 20:37:02,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-03 20:37:02,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-03 20:37:02,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-09-03 20:37:02,581 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2019-09-03 20:37:02,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:37:02,581 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-09-03 20:37:02,581 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:37:02,581 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-09-03 20:37:02,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 20:37:02,583 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:37:02,583 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:37:02,583 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:37:02,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:37:02,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1862399520, now seen corresponding path program 1 times [2019-09-03 20:37:02,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:37:02,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:02,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:37:02,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:02,586 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:37:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 20:37:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 20:37:02,626 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-03 20:37:02,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:37:02 BoogieIcfgContainer [2019-09-03 20:37:02,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:37:02,646 INFO L168 Benchmark]: Toolchain (without parser) took 880.75 ms. Allocated memory was 139.5 MB in the beginning and 198.7 MB in the end (delta: 59.2 MB). Free memory was 87.2 MB in the beginning and 142.8 MB in the end (delta: -55.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:02,647 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:37:02,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.00 ms. Allocated memory is still 139.5 MB. Free memory was 87.0 MB in the beginning and 77.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:02,649 INFO L168 Benchmark]: Boogie Preprocessor took 110.83 ms. Allocated memory was 139.5 MB in the beginning and 198.7 MB in the end (delta: 59.2 MB). Free memory was 77.9 MB in the beginning and 176.7 MB in the end (delta: -98.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:02,650 INFO L168 Benchmark]: RCFGBuilder took 214.51 ms. Allocated memory is still 198.7 MB. Free memory was 176.7 MB in the beginning and 164.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:02,651 INFO L168 Benchmark]: TraceAbstraction took 326.17 ms. Allocated memory is still 198.7 MB. Free memory was 164.0 MB in the beginning and 142.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:02,655 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 139.5 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 226.00 ms. Allocated memory is still 139.5 MB. Free memory was 87.0 MB in the beginning and 77.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.83 ms. Allocated memory was 139.5 MB in the beginning and 198.7 MB in the end (delta: 59.2 MB). Free memory was 77.9 MB in the beginning and 176.7 MB in the end (delta: -98.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 214.51 ms. Allocated memory is still 198.7 MB. Free memory was 176.7 MB in the beginning and 164.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 326.17 ms. Allocated memory is still 198.7 MB. Free memory was 164.0 MB in the beginning and 142.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 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: [L13] int x; VAL [\old(x)=1, x=0] [L20] x=__VERIFIER_nondet_int() [L21] COND FALSE !(x > 0) VAL [\old(x)=0, x=-1] [L26] CALL __VERIFIER_assert(x==0) VAL [\old(cond)=0, \old(x)=0, x=-1] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(x)=0, cond=0, x=-1] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(x)=0, cond=0, x=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 26 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=24occurred 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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...