/usr/bin/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/array-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:45:14,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:45:14,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:45:14,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:45:14,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:45:14,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:45:14,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:45:14,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:45:14,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:45:14,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:45:14,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:45:14,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:45:14,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:45:14,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:45:14,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:45:14,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:45:14,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:45:14,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:45:14,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:45:14,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:45:14,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:45:14,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:45:14,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:45:14,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:45:14,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:45:14,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:45:14,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:45:14,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:45:14,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:45:14,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:45:14,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:45:14,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:45:14,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:45:14,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:45:14,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:45:14,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:45:14,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:45:14,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:45:14,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:45:14,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:45:14,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:45:14,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:45:14,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:45:14,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:45:14,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:45:14,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:45:14,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:45:14,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:45:14,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:45:14,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:45:14,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:45:14,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:45:14,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:45:14,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:45:14,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:45:14,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:45:14,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:45:14,277 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:45:14,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:45:14,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:45:14,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:45:14,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:45:14,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:45:14,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:45:14,279 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:45:14,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:45:14,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:45:14,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:45:14,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:45:14,575 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:45:14,576 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-2.c [2020-08-22 19:45:14,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac97725d1/a00ebda153b049a1a78673c312d870ae/FLAG2e7964745 [2020-08-22 19:45:15,091 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:45:15,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-2.c [2020-08-22 19:45:15,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac97725d1/a00ebda153b049a1a78673c312d870ae/FLAG2e7964745 [2020-08-22 19:45:15,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac97725d1/a00ebda153b049a1a78673c312d870ae [2020-08-22 19:45:15,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:45:15,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:45:15,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:45:15,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:45:15,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:45:15,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:45:15" (1/1) ... [2020-08-22 19:45:15,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282ed4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:15, skipping insertion in model container [2020-08-22 19:45:15,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:45:15" (1/1) ... [2020-08-22 19:45:15,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:45:15,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:45:15,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:45:15,782 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:45:15,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:45:15,829 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:45:15,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:15 WrapperNode [2020-08-22 19:45:15,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:45:15,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:45:15,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:45:15,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:45:15,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:15" (1/1) ... [2020-08-22 19:45:15,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:15" (1/1) ... [2020-08-22 19:45:15,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:15" (1/1) ... [2020-08-22 19:45:15,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:15" (1/1) ... [2020-08-22 19:45:15,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:15" (1/1) ... [2020-08-22 19:45:15,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:15" (1/1) ... [2020-08-22 19:45:15,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:15" (1/1) ... [2020-08-22 19:45:15,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:45:15,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:45:15,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:45:15,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:45:15,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:15" (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 [2020-08-22 19:45:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:45:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:45:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:45:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:45:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:45:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:45:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:45:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:45:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 19:45:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:45:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:45:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:45:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:45:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:45:16,357 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:45:16,358 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 19:45:16,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:45:16 BoogieIcfgContainer [2020-08-22 19:45:16,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:45:16,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:45:16,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:45:16,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:45:16,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:45:15" (1/3) ... [2020-08-22 19:45:16,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bdc50b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:45:16, skipping insertion in model container [2020-08-22 19:45:16,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:15" (2/3) ... [2020-08-22 19:45:16,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bdc50b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:45:16, skipping insertion in model container [2020-08-22 19:45:16,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:45:16" (3/3) ... [2020-08-22 19:45:16,370 INFO L109 eAbstractionObserver]: Analyzing ICFG array-2.c [2020-08-22 19:45:16,381 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:45:16,387 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:45:16,399 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:45:16,421 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:45:16,422 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:45:16,422 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:45:16,422 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:45:16,422 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:45:16,422 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:45:16,422 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:45:16,423 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:45:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-08-22 19:45:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 19:45:16,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:16,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:45:16,449 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:16,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:16,455 INFO L82 PathProgramCache]: Analyzing trace with hash 683487989, now seen corresponding path program 1 times [2020-08-22 19:45:16,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:16,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891119564] [2020-08-22 19:45:16,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:16,522 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:45:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:16,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:45:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:45:16,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891119564] [2020-08-22 19:45:16,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:45:16,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:45:16,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639988144] [2020-08-22 19:45:16,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:45:16,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:45:16,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:45:16,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:45:16,858 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 5 states. [2020-08-22 19:45:17,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:45:17,087 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-08-22 19:45:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 19:45:17,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-08-22 19:45:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:45:17,102 INFO L225 Difference]: With dead ends: 75 [2020-08-22 19:45:17,105 INFO L226 Difference]: Without dead ends: 49 [2020-08-22 19:45:17,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:45:17,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-08-22 19:45:17,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-08-22 19:45:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-22 19:45:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-08-22 19:45:17,219 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 22 [2020-08-22 19:45:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:45:17,219 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-08-22 19:45:17,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:45:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-08-22 19:45:17,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 19:45:17,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:17,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:45:17,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:45:17,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:17,223 INFO L82 PathProgramCache]: Analyzing trace with hash 403649603, now seen corresponding path program 1 times [2020-08-22 19:45:17,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:17,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895378409] [2020-08-22 19:45:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:17,255 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:45:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:17,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:45:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:45:17,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895378409] [2020-08-22 19:45:17,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:45:17,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 19:45:17,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823908022] [2020-08-22 19:45:17,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 19:45:17,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:45:17,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 19:45:17,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:45:17,748 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 11 states. [2020-08-22 19:45:18,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:45:18,163 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-08-22 19:45:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 19:45:18,164 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-08-22 19:45:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:45:18,166 INFO L225 Difference]: With dead ends: 49 [2020-08-22 19:45:18,166 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 19:45:18,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-08-22 19:45:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 19:45:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-08-22 19:45:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-22 19:45:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-08-22 19:45:18,182 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 32 [2020-08-22 19:45:18,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:45:18,183 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-08-22 19:45:18,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 19:45:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-08-22 19:45:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 19:45:18,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:18,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:45:18,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:45:18,185 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:18,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:18,186 INFO L82 PathProgramCache]: Analyzing trace with hash -913737726, now seen corresponding path program 1 times [2020-08-22 19:45:18,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:18,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729374180] [2020-08-22 19:45:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:18,195 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:45:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:45:18,216 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:45:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:45:18,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:45:18,261 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:45:18,262 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:45:18,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:45:18,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:45:18 BoogieIcfgContainer [2020-08-22 19:45:18,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:45:18,284 INFO L168 Benchmark]: Toolchain (without parser) took 2789.73 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 103.4 MB in the beginning and 141.0 MB in the end (delta: -37.6 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:18,285 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 19:45:18,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.71 ms. Allocated memory is still 139.5 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:18,287 INFO L168 Benchmark]: Boogie Preprocessor took 120.40 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 180.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:18,288 INFO L168 Benchmark]: RCFGBuilder took 410.55 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 164.3 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:18,289 INFO L168 Benchmark]: TraceAbstraction took 1917.52 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 163.7 MB in the beginning and 141.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:18,293 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.71 ms. Allocated memory is still 139.5 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.40 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 180.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.55 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 164.3 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1917.52 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 163.7 MB in the beginning and 141.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 55.7 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] unsigned int SIZE=1; [L14] unsigned int j,k; [L15] int array[SIZE], menor; [L17] menor = __VERIFIER_nondet_int() [L19] j=0 [L19] COND TRUE jmenor) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 134 SDslu, 155 SDs, 0 SdLazy, 208 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...