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/trex01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:49:22,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:49:22,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:49:22,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:49:22,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:49:22,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:49:22,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:49:22,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:49:22,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:49:22,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:49:22,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:49:22,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:49:22,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:49:22,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:49:22,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:49:22,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:49:22,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:49:22,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:49:22,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:49:22,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:49:22,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:49:22,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:49:22,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:49:22,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:49:22,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:49:22,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:49:22,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:49:22,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:49:22,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:49:22,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:49:22,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:49:22,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:49:22,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:49:22,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:49:22,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:49:22,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:49:22,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:49:22,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:49:22,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:49:22,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:49:22,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:49:22,368 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 [2019-09-10 01:49:22,382 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:49:22,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:49:22,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:49:22,383 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:49:22,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:49:22,383 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:49:22,384 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:49:22,384 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:49:22,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:49:22,384 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:49:22,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:49:22,385 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:49:22,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:49:22,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:49:22,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:49:22,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:49:22,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:49:22,386 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:49:22,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:49:22,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:49:22,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:49:22,387 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:49:22,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:49:22,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:49:22,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:49:22,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:49:22,388 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:49:22,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:49:22,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:49:22,388 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:49:22,416 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:49:22,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:49:22,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:49:22,432 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:49:22,433 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:49:22,433 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-1.c [2019-09-10 01:49:22,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fba512b0/cbe212ab9d8f4bcd8d7fed042c88d563/FLAGf145a5064 [2019-09-10 01:49:22,923 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:49:22,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-1.c [2019-09-10 01:49:22,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fba512b0/cbe212ab9d8f4bcd8d7fed042c88d563/FLAGf145a5064 [2019-09-10 01:49:23,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fba512b0/cbe212ab9d8f4bcd8d7fed042c88d563 [2019-09-10 01:49:23,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:49:23,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:49:23,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:49:23,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:49:23,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:49:23,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:49:23" (1/1) ... [2019-09-10 01:49:23,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350286e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:23, skipping insertion in model container [2019-09-10 01:49:23,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:49:23" (1/1) ... [2019-09-10 01:49:23,364 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:49:23,380 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:49:23,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:49:23,557 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:49:23,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:49:23,598 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:49:23,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:23 WrapperNode [2019-09-10 01:49:23,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:49:23,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:49:23,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:49:23,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:49:23,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:23" (1/1) ... [2019-09-10 01:49:23,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:23" (1/1) ... [2019-09-10 01:49:23,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:23" (1/1) ... [2019-09-10 01:49:23,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:23" (1/1) ... [2019-09-10 01:49:23,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:23" (1/1) ... [2019-09-10 01:49:23,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:23" (1/1) ... [2019-09-10 01:49:23,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:23" (1/1) ... [2019-09-10 01:49:23,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:49:23,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:49:23,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:49:23,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:49:23,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:23" (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 [2019-09-10 01:49:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:49:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:49:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:49:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-09-10 01:49:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:49:23,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:49:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:49:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-10 01:49:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:49:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-09-10 01:49:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:49:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:49:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:49:23,982 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:49:23,982 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-10 01:49:23,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:49:23 BoogieIcfgContainer [2019-09-10 01:49:23,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:49:23,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:49:23,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:49:24,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:49:24,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:49:23" (1/3) ... [2019-09-10 01:49:24,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd50b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:49:24, skipping insertion in model container [2019-09-10 01:49:24,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:23" (2/3) ... [2019-09-10 01:49:24,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd50b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:49:24, skipping insertion in model container [2019-09-10 01:49:24,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:49:23" (3/3) ... [2019-09-10 01:49:24,006 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-1.c [2019-09-10 01:49:24,031 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:49:24,039 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:49:24,054 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:49:24,087 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:49:24,088 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:49:24,088 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:49:24,088 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:49:24,088 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:49:24,088 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:49:24,088 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:49:24,088 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:49:24,102 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-09-10 01:49:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:49:24,110 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:24,110 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:24,112 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:24,117 INFO L82 PathProgramCache]: Analyzing trace with hash -355556993, now seen corresponding path program 1 times [2019-09-10 01:49:24,119 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:24,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:24,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:24,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:24,158 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:49:24,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:49:24,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:49:24,242 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:24,246 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:49:24,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:49:24,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:49:24,258 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-09-10 01:49:24,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:24,272 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-09-10 01:49:24,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:49:24,273 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-10 01:49:24,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:24,282 INFO L225 Difference]: With dead ends: 28 [2019-09-10 01:49:24,283 INFO L226 Difference]: Without dead ends: 16 [2019-09-10 01:49:24,285 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 [2019-09-10 01:49:24,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-10 01:49:24,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-10 01:49:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-10 01:49:24,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-09-10 01:49:24,315 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-09-10 01:49:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:24,315 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-09-10 01:49:24,315 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:49:24,316 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-09-10 01:49:24,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:49:24,316 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:24,317 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:24,317 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:24,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:24,317 INFO L82 PathProgramCache]: Analyzing trace with hash -359251077, now seen corresponding path program 1 times [2019-09-10 01:49:24,318 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:24,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:24,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:24,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:24,319 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:49:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:49:24,393 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:49:24,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:49:24 BoogieIcfgContainer [2019-09-10 01:49:24,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:49:24,417 INFO L168 Benchmark]: Toolchain (without parser) took 1066.05 ms. Allocated memory was 134.2 MB in the beginning and 201.3 MB in the end (delta: 67.1 MB). Free memory was 90.4 MB in the beginning and 142.5 MB in the end (delta: -52.1 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:24,418 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:49:24,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.07 ms. Allocated memory is still 134.2 MB. Free memory was 90.2 MB in the beginning and 80.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:24,421 INFO L168 Benchmark]: Boogie Preprocessor took 112.11 ms. Allocated memory was 134.2 MB in the beginning and 201.3 MB in the end (delta: 67.1 MB). Free memory was 80.8 MB in the beginning and 177.9 MB in the end (delta: -97.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:24,422 INFO L168 Benchmark]: RCFGBuilder took 280.14 ms. Allocated memory is still 201.3 MB. Free memory was 177.9 MB in the beginning and 164.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:24,423 INFO L168 Benchmark]: TraceAbstraction took 420.51 ms. Allocated memory is still 201.3 MB. Free memory was 164.3 MB in the beginning and 142.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:24,430 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.07 ms. Allocated memory is still 134.2 MB. Free memory was 90.2 MB in the beginning and 80.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.11 ms. Allocated memory was 134.2 MB in the beginning and 201.3 MB in the end (delta: 67.1 MB). Free memory was 80.8 MB in the beginning and 177.9 MB in the end (delta: -97.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 280.14 ms. Allocated memory is still 201.3 MB. Free memory was 177.9 MB in the beginning and 164.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 420.51 ms. Allocated memory is still 201.3 MB. Free memory was 164.3 MB in the beginning and 142.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 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...