/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/eqn3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 18:04:03,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 18:04:03,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 18:04:03,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 18:04:03,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 18:04:03,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 18:04:03,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 18:04:03,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 18:04:03,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 18:04:03,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 18:04:03,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 18:04:03,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 18:04:03,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 18:04:03,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 18:04:03,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 18:04:03,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 18:04:03,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 18:04:03,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 18:04:03,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 18:04:03,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 18:04:03,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 18:04:03,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 18:04:03,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 18:04:03,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 18:04:03,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 18:04:03,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 18:04:03,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 18:04:03,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 18:04:03,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 18:04:03,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 18:04:03,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 18:04:03,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 18:04:03,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 18:04:03,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 18:04:03,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 18:04:03,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 18:04:03,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 18:04:03,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 18:04:03,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 18:04:03,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 18:04:03,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 18:04:03,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 18:04:03,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 18:04:03,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 18:04:03,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 18:04:03,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 18:04:03,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 18:04:03,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 18:04:03,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 18:04:03,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 18:04:03,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 18:04:03,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 18:04:03,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 18:04:03,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 18:04:03,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 18:04:03,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 18:04:03,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 18:04:03,264 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 18:04:03,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 18:04:03,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 18:04:03,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 18:04:03,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 18:04:03,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 18:04:03,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 18:04:03,265 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 18:04:03,528 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 18:04:03,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 18:04:03,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 18:04:03,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 18:04:03,546 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 18:04:03,547 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn3f.c [2020-07-17 18:04:03,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db4b1de6/68b409bd059f4a8483c84243d8b5800f/FLAG962e7bc41 [2020-07-17 18:04:04,120 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 18:04:04,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn3f.c [2020-07-17 18:04:04,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db4b1de6/68b409bd059f4a8483c84243d8b5800f/FLAG962e7bc41 [2020-07-17 18:04:04,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db4b1de6/68b409bd059f4a8483c84243d8b5800f [2020-07-17 18:04:04,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 18:04:04,524 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 18:04:04,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 18:04:04,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 18:04:04,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 18:04:04,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:04:04" (1/1) ... [2020-07-17 18:04:04,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f49704e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:04, skipping insertion in model container [2020-07-17 18:04:04,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:04:04" (1/1) ... [2020-07-17 18:04:04,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 18:04:04,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 18:04:04,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:04:04,756 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 18:04:04,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:04:04,794 INFO L208 MainTranslator]: Completed translation [2020-07-17 18:04:04,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:04 WrapperNode [2020-07-17 18:04:04,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 18:04:04,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 18:04:04,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 18:04:04,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 18:04:04,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:04" (1/1) ... [2020-07-17 18:04:04,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:04" (1/1) ... [2020-07-17 18:04:04,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:04" (1/1) ... [2020-07-17 18:04:04,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:04" (1/1) ... [2020-07-17 18:04:04,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:04" (1/1) ... [2020-07-17 18:04:04,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:04" (1/1) ... [2020-07-17 18:04:04,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:04" (1/1) ... [2020-07-17 18:04:04,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 18:04:04,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 18:04:04,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 18:04:04,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 18:04:04,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:04" (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 [2020-07-17 18:04:04,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 18:04:04,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 18:04:04,979 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 18:04:04,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 18:04:04,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 18:04:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 18:04:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 18:04:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 18:04:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 18:04:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 18:04:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 18:04:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 18:04:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 18:04:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 18:04:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 18:04:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 18:04:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 18:04:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 18:04:05,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 18:04:05,301 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-17 18:04:05,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:04:05 BoogieIcfgContainer [2020-07-17 18:04:05,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 18:04:05,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 18:04:05,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 18:04:05,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 18:04:05,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 06:04:04" (1/3) ... [2020-07-17 18:04:05,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ecd96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:04:05, skipping insertion in model container [2020-07-17 18:04:05,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:04" (2/3) ... [2020-07-17 18:04:05,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ecd96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:04:05, skipping insertion in model container [2020-07-17 18:04:05,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:04:05" (3/3) ... [2020-07-17 18:04:05,314 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn3f.c [2020-07-17 18:04:05,327 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 18:04:05,334 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 18:04:05,349 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 18:04:05,369 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 18:04:05,369 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 18:04:05,369 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 18:04:05,369 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 18:04:05,370 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 18:04:05,370 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 18:04:05,370 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 18:04:05,370 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 18:04:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-07-17 18:04:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 18:04:05,396 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:05,397 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] [2020-07-17 18:04:05,397 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:05,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:05,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1558850377, now seen corresponding path program 1 times [2020-07-17 18:04:05,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:05,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27800312] [2020-07-17 18:04:05,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:04:05,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27800312] [2020-07-17 18:04:05,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:04:05,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 18:04:05,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795978636] [2020-07-17 18:04:05,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 18:04:05,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:04:05,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 18:04:05,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 18:04:05,735 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2020-07-17 18:04:05,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:04:05,930 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2020-07-17 18:04:05,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 18:04:05,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-07-17 18:04:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:04:05,942 INFO L225 Difference]: With dead ends: 109 [2020-07-17 18:04:05,942 INFO L226 Difference]: Without dead ends: 56 [2020-07-17 18:04:05,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 18:04:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-17 18:04:05,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-17 18:04:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-17 18:04:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-07-17 18:04:05,998 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 35 [2020-07-17 18:04:05,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:04:05,999 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-07-17 18:04:05,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 18:04:05,999 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-07-17 18:04:06,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 18:04:06,001 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:06,001 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] [2020-07-17 18:04:06,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 18:04:06,002 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:06,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:06,003 INFO L82 PathProgramCache]: Analyzing trace with hash -574468364, now seen corresponding path program 1 times [2020-07-17 18:04:06,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:06,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679099716] [2020-07-17 18:04:06,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:06,031 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 18:04:06,032 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-07-17 18:04:06,032 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 18:04:06,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 18:04:06,054 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-17 18:04:06,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 06:04:06 BoogieIcfgContainer [2020-07-17 18:04:06,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 18:04:06,058 INFO L168 Benchmark]: Toolchain (without parser) took 1534.25 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 119.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:06,059 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 18:04:06,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.31 ms. Allocated memory is still 136.8 MB. Free memory was 101.1 MB in the beginning and 90.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:06,061 INFO L168 Benchmark]: Boogie Preprocessor took 119.97 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 90.8 MB in the beginning and 178.2 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:06,062 INFO L168 Benchmark]: RCFGBuilder took 390.34 ms. Allocated memory is still 200.8 MB. Free memory was 178.2 MB in the beginning and 159.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:06,063 INFO L168 Benchmark]: TraceAbstraction took 748.09 ms. Allocated memory is still 200.8 MB. Free memory was 158.7 MB in the beginning and 119.7 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:06,067 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.31 ms. Allocated memory is still 136.8 MB. Free memory was 101.1 MB in the beginning and 90.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.97 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 90.8 MB in the beginning and 178.2 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 390.34 ms. Allocated memory is still 200.8 MB. Free memory was 178.2 MB in the beginning and 159.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 748.09 ms. Allocated memory is still 200.8 MB. Free memory was 158.7 MB in the beginning and 119.7 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 6 [L30] b[0] = 10 [L32] i=1 [L32] COND FALSE !(i