/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/brs5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:09:05,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:09:05,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:09:05,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:09:05,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:09:05,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:09:05,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:09:05,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:09:05,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:09:05,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:09:05,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:09:05,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:09:05,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:09:05,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:09:05,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:09:05,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:09:05,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:09:05,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:09:05,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:09:05,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:09:05,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:09:05,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:09:05,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:09:05,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:09:05,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:09:05,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:09:05,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:09:05,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:09:05,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:09:05,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:09:05,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:09:05,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:09:05,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:09:05,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:09:05,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:09:05,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:09:05,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:09:05,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:09:05,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:09:05,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:09:05,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:09:05,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:09:05,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:09:05,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:09:05,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:09:05,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:09:05,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:09:05,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:09:05,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:09:05,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:09:05,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:09:05,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:09:05,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:09:05,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:09:05,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:09:05,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:09:05,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:09:05,395 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:09:05,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:09:05,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:09:05,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:09:05,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:09:05,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:09:05,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:09:05,397 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 [2020-09-04 23:09:05,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:09:05,867 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:09:05,871 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:09:05,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:09:05,873 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:09:05,875 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs5f.c [2020-09-04 23:09:05,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f11acfec/375b0a043a81403586669909675fb864/FLAG293083b8e [2020-09-04 23:09:06,530 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:09:06,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs5f.c [2020-09-04 23:09:06,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f11acfec/375b0a043a81403586669909675fb864/FLAG293083b8e [2020-09-04 23:09:06,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f11acfec/375b0a043a81403586669909675fb864 [2020-09-04 23:09:06,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:09:06,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:09:06,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:06,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:09:06,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:09:06,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:06" (1/1) ... [2020-09-04 23:09:06,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5035f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:06, skipping insertion in model container [2020-09-04 23:09:06,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:06" (1/1) ... [2020-09-04 23:09:06,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:09:06,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:09:07,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:07,232 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:09:07,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:07,279 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:09:07,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:07 WrapperNode [2020-09-04 23:09:07,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:07,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:09:07,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:09:07,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:09:07,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:07" (1/1) ... [2020-09-04 23:09:07,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:07" (1/1) ... [2020-09-04 23:09:07,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:07" (1/1) ... [2020-09-04 23:09:07,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:07" (1/1) ... [2020-09-04 23:09:07,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:07" (1/1) ... [2020-09-04 23:09:07,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:07" (1/1) ... [2020-09-04 23:09:07,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:07" (1/1) ... [2020-09-04 23:09:07,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:09:07,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:09:07,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:09:07,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:09:07,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 23:09:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:09:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:09:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:09:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:09:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:09:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:09:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:09:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:09:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:09:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:09:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:09:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:09:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 23:09:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:09:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:09:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:09:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:09:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:09:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:09:07,822 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:09:07,823 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 23:09:07,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:07 BoogieIcfgContainer [2020-09-04 23:09:07,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:09:07,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:09:07,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:09:07,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:09:07,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:09:06" (1/3) ... [2020-09-04 23:09:07,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e1ce5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:07, skipping insertion in model container [2020-09-04 23:09:07,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:07" (2/3) ... [2020-09-04 23:09:07,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e1ce5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:07, skipping insertion in model container [2020-09-04 23:09:07,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:07" (3/3) ... [2020-09-04 23:09:07,845 INFO L109 eAbstractionObserver]: Analyzing ICFG brs5f.c [2020-09-04 23:09:07,866 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:09:07,875 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:09:07,909 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:09:07,935 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:09:07,936 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:09:07,936 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:09:07,936 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:09:07,936 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:09:07,936 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:09:07,936 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:09:07,937 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:09:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-04 23:09:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 23:09:07,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:07,968 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] [2020-09-04 23:09:07,968 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:07,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:07,974 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-04 23:09:07,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:07,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409034475] [2020-09-04 23:09:07,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:08,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:08,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:09:08,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409034475] [2020-09-04 23:09:08,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:08,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:09:08,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625233914] [2020-09-04 23:09:08,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:09:08,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:08,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:09:08,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:09:08,273 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-04 23:09:08,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:08,471 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-09-04 23:09:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:09:08,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-04 23:09:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:08,487 INFO L225 Difference]: With dead ends: 101 [2020-09-04 23:09:08,487 INFO L226 Difference]: Without dead ends: 47 [2020-09-04 23:09:08,493 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 [2020-09-04 23:09:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-04 23:09:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-04 23:09:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-04 23:09:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-09-04 23:09:08,550 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-09-04 23:09:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:08,551 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-09-04 23:09:08,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:09:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-09-04 23:09:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 23:09:08,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:08,553 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] [2020-09-04 23:09:08,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:09:08,554 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:08,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:08,554 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-09-04 23:09:08,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:08,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961246050] [2020-09-04 23:09:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:08,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:08,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:09:08,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961246050] [2020-09-04 23:09:08,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:08,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:09:08,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15643404] [2020-09-04 23:09:08,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:09:08,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:08,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:09:08,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:09:08,718 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-09-04 23:09:08,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:08,942 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-09-04 23:09:08,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:09:08,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-04 23:09:08,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:08,945 INFO L225 Difference]: With dead ends: 81 [2020-09-04 23:09:08,945 INFO L226 Difference]: Without dead ends: 56 [2020-09-04 23:09:08,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:09:08,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-04 23:09:08,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2020-09-04 23:09:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-04 23:09:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-09-04 23:09:08,962 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 30 [2020-09-04 23:09:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:08,962 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-09-04 23:09:08,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:09:08,963 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-09-04 23:09:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-04 23:09:08,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:08,965 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:09:08,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:09:08,965 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:08,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:08,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-04 23:09:08,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:08,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551359444] [2020-09-04 23:09:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:09:09,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:09:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:09:09,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:09:09,116 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 23:09:09,116 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:09:09,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:09:09,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:09:09 BoogieIcfgContainer [2020-09-04 23:09:09,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:09:09,168 INFO L168 Benchmark]: Toolchain (without parser) took 2271.44 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 89.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 75.9 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:09,169 INFO L168 Benchmark]: CDTParser took 0.94 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-04 23:09:09,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.68 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 91.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:09,171 INFO L168 Benchmark]: Boogie Preprocessor took 150.40 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 91.6 MB in the beginning and 179.7 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:09,172 INFO L168 Benchmark]: RCFGBuilder took 396.78 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 161.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:09,173 INFO L168 Benchmark]: TraceAbstraction took 1334.01 ms. Allocated memory is still 202.4 MB. Free memory was 160.6 MB in the beginning and 89.9 MB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:09,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 384.68 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 91.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.40 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 91.6 MB in the beginning and 179.7 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.78 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 161.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1334.01 ms. Allocated memory is still 202.4 MB. Free memory was 160.6 MB in the beginning and 89.9 MB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=10, N=0] [L21] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; VAL [\old(N)=0, N=1] [L26] long long sum[1]; VAL [\old(N)=0, N=1, sum={2:0}] [L27] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L29] COND TRUE i