/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/ms4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 18:04:30,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 18:04:30,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 18:04:30,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 18:04:30,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 18:04:30,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 18:04:30,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 18:04:30,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 18:04:30,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 18:04:30,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 18:04:30,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 18:04:30,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 18:04:30,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 18:04:30,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 18:04:30,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 18:04:30,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 18:04:30,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 18:04:30,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 18:04:30,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 18:04:30,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 18:04:30,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 18:04:30,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 18:04:30,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 18:04:30,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 18:04:30,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 18:04:30,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 18:04:30,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 18:04:30,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 18:04:30,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 18:04:30,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 18:04:30,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 18:04:30,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 18:04:30,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 18:04:30,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 18:04:30,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 18:04:30,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 18:04:30,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 18:04:30,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 18:04:30,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 18:04:30,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 18:04:30,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 18:04:30,910 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 18:04:30,924 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 18:04:30,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 18:04:30,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 18:04:30,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 18:04:30,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 18:04:30,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 18:04:30,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 18:04:30,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 18:04:30,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 18:04:30,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 18:04:30,928 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 18:04:30,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 18:04:30,928 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 18:04:30,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 18:04:30,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 18:04:30,929 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 18:04:30,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 18:04:30,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 18:04:30,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 18:04:30,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 18:04:30,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 18:04:30,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 18:04:30,930 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 18:04:31,242 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 18:04:31,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 18:04:31,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 18:04:31,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 18:04:31,264 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 18:04:31,264 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms4f.c [2020-07-17 18:04:31,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004419808/8c680a90c26e4b8bb41f8aca5fef9062/FLAGc607ca30f [2020-07-17 18:04:31,786 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 18:04:31,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms4f.c [2020-07-17 18:04:31,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004419808/8c680a90c26e4b8bb41f8aca5fef9062/FLAGc607ca30f [2020-07-17 18:04:32,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004419808/8c680a90c26e4b8bb41f8aca5fef9062 [2020-07-17 18:04:32,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 18:04:32,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 18:04:32,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 18:04:32,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 18:04:32,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 18:04:32,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:04:32" (1/1) ... [2020-07-17 18:04:32,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7262a247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:32, skipping insertion in model container [2020-07-17 18:04:32,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:04:32" (1/1) ... [2020-07-17 18:04:32,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 18:04:32,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 18:04:32,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:04:32,395 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 18:04:32,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:04:32,432 INFO L208 MainTranslator]: Completed translation [2020-07-17 18:04:32,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:32 WrapperNode [2020-07-17 18:04:32,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 18:04:32,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 18:04:32,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 18:04:32,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 18:04:32,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:32" (1/1) ... [2020-07-17 18:04:32,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:32" (1/1) ... [2020-07-17 18:04:32,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:32" (1/1) ... [2020-07-17 18:04:32,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:32" (1/1) ... [2020-07-17 18:04:32,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:32" (1/1) ... [2020-07-17 18:04:32,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:32" (1/1) ... [2020-07-17 18:04:32,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:32" (1/1) ... [2020-07-17 18:04:32,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 18:04:32,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 18:04:32,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 18:04:32,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 18:04:32,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:32" (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 18:04:32,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 18:04:32,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 18:04:32,632 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 18:04:32,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 18:04:32,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 18:04:32,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 18:04:32,633 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 18:04:32,633 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 18:04:32,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 18:04:32,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 18:04:32,633 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 18:04:32,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 18:04:32,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 18:04:32,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 18:04:32,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 18:04:32,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 18:04:32,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 18:04:32,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 18:04:32,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 18:04:32,968 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 18:04:32,968 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-17 18:04:32,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:04:32 BoogieIcfgContainer [2020-07-17 18:04:32,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 18:04:32,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 18:04:32,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 18:04:32,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 18:04:32,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 06:04:32" (1/3) ... [2020-07-17 18:04:32,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e0a212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:04:32, skipping insertion in model container [2020-07-17 18:04:32,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:32" (2/3) ... [2020-07-17 18:04:32,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e0a212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:04:32, skipping insertion in model container [2020-07-17 18:04:32,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:04:32" (3/3) ... [2020-07-17 18:04:32,984 INFO L109 eAbstractionObserver]: Analyzing ICFG ms4f.c [2020-07-17 18:04:32,992 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 18:04:32,999 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 18:04:33,014 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 18:04:33,036 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 18:04:33,037 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 18:04:33,037 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 18:04:33,037 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 18:04:33,037 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 18:04:33,037 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 18:04:33,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 18:04:33,038 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 18:04:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-07-17 18:04:33,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-17 18:04:33,065 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:33,066 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] [2020-07-17 18:04:33,066 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:33,071 INFO L82 PathProgramCache]: Analyzing trace with hash -845632023, now seen corresponding path program 1 times [2020-07-17 18:04:33,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:33,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500633242] [2020-07-17 18:04:33,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:33,328 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 18:04:33,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500633242] [2020-07-17 18:04:33,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:04:33,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 18:04:33,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003905171] [2020-07-17 18:04:33,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 18:04:33,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:04:33,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 18:04:33,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 18:04:33,359 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 3 states. [2020-07-17 18:04:33,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:04:33,575 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-07-17 18:04:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 18:04:33,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-17 18:04:33,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:04:33,592 INFO L225 Difference]: With dead ends: 97 [2020-07-17 18:04:33,592 INFO L226 Difference]: Without dead ends: 45 [2020-07-17 18:04:33,605 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 18:04:33,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-17 18:04:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-07-17 18:04:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-17 18:04:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-07-17 18:04:33,667 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 30 [2020-07-17 18:04:33,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:04:33,667 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-07-17 18:04:33,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 18:04:33,668 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-07-17 18:04:33,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-17 18:04:33,669 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:33,669 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] [2020-07-17 18:04:33,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 18:04:33,670 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:33,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:33,671 INFO L82 PathProgramCache]: Analyzing trace with hash 104990277, now seen corresponding path program 1 times [2020-07-17 18:04:33,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:33,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609154081] [2020-07-17 18:04:33,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:33,787 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 18:04:33,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609154081] [2020-07-17 18:04:33,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:04:33,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 18:04:33,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858100770] [2020-07-17 18:04:33,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 18:04:33,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:04:33,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 18:04:33,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 18:04:33,791 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 5 states. [2020-07-17 18:04:33,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:04:33,960 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-07-17 18:04:33,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 18:04:33,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-17 18:04:33,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:04:33,963 INFO L225 Difference]: With dead ends: 71 [2020-07-17 18:04:33,963 INFO L226 Difference]: Without dead ends: 53 [2020-07-17 18:04:33,965 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 [2020-07-17 18:04:33,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-17 18:04:33,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-07-17 18:04:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-17 18:04:33,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-07-17 18:04:33,979 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 30 [2020-07-17 18:04:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:04:33,980 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-07-17 18:04:33,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 18:04:33,980 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-07-17 18:04:33,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-17 18:04:33,982 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:33,982 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] [2020-07-17 18:04:33,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 18:04:33,982 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:33,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1687643347, now seen corresponding path program 1 times [2020-07-17 18:04:33,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:33,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183354404] [2020-07-17 18:04:33,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 18:04:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 18:04:34,102 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 18:04:34,102 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 18:04:34,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 18:04:34,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 06:04:34 BoogieIcfgContainer [2020-07-17 18:04:34,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 18:04:34,149 INFO L168 Benchmark]: Toolchain (without parser) took 1973.72 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 103.8 MB in the beginning and 94.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:34,150 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 18:04:34,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.56 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 93.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:34,152 INFO L168 Benchmark]: Boogie Preprocessor took 129.80 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 93.0 MB in the beginning and 181.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:34,153 INFO L168 Benchmark]: RCFGBuilder took 410.69 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 162.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:34,154 INFO L168 Benchmark]: TraceAbstraction took 1169.64 ms. Allocated memory is still 203.9 MB. Free memory was 162.9 MB in the beginning and 94.6 MB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:34,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.56 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 93.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.80 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 93.0 MB in the beginning and 181.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.69 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 162.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1169.64 ms. Allocated memory is still 203.9 MB. Free memory was 162.9 MB in the beginning and 94.6 MB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 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 3*N) VAL [\old(cond)=0, \old(N)=0, N=1] [L13] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L13] __VERIFIER_error() VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 53 SDslu, 33 SDs, 0 SdLazy, 113 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred 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, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 2900 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...