/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/sina4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:24,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:24,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:24,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:24,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:24,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:24,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:24,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:24,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:24,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:24,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:24,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:24,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:24,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:24,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:24,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:24,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:24,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:24,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:24,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:24,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:24,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:24,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:24,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:24,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:44:24,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:44:24,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:44:24,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:44:24,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:44:24,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:44:24,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:44:24,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:44:24,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:44:24,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:44:24,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:44:24,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:44:24,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:44:24,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:44:24,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:24,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:24,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:24,189 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 17:44:24,202 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:24,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:24,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:24,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:24,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:24,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:24,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:24,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:24,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:24,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:24,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:24,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:24,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:24,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:24,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:24,210 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:24,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:24,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:24,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:24,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:24,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:24,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:24,212 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:24,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:24,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:24,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:24,678 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:24,679 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:24,680 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2020-09-04 17:44:24,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46d049b8d/526dcedb2d314ce8a59637dc9f9e99b2/FLAGfa10dd4b1 [2020-09-04 17:44:25,305 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:25,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina4f.c [2020-09-04 17:44:25,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46d049b8d/526dcedb2d314ce8a59637dc9f9e99b2/FLAGfa10dd4b1 [2020-09-04 17:44:25,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46d049b8d/526dcedb2d314ce8a59637dc9f9e99b2 [2020-09-04 17:44:25,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:25,641 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:25,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:25,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:25,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:25,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:25" (1/1) ... [2020-09-04 17:44:25,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44406637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:25, skipping insertion in model container [2020-09-04 17:44:25,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:25" (1/1) ... [2020-09-04 17:44:25,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:25,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:25,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:25,910 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:25,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:25,954 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:25,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:25 WrapperNode [2020-09-04 17:44:25,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:25,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:25,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:25,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:26,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:25" (1/1) ... [2020-09-04 17:44:26,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:25" (1/1) ... [2020-09-04 17:44:26,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:25" (1/1) ... [2020-09-04 17:44:26,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:25" (1/1) ... [2020-09-04 17:44:26,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:25" (1/1) ... [2020-09-04 17:44:26,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:25" (1/1) ... [2020-09-04 17:44:26,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:25" (1/1) ... [2020-09-04 17:44:26,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:26,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:26,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:26,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:26,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:25" (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 17:44:26,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:26,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:26,173 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:26,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:26,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:26,592 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:26,599 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 17:44:26,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:26 BoogieIcfgContainer [2020-09-04 17:44:26,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:26,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:26,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:26,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:26,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:25" (1/3) ... [2020-09-04 17:44:26,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8d1b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:26, skipping insertion in model container [2020-09-04 17:44:26,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:25" (2/3) ... [2020-09-04 17:44:26,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8d1b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:26, skipping insertion in model container [2020-09-04 17:44:26,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:26" (3/3) ... [2020-09-04 17:44:26,612 INFO L109 eAbstractionObserver]: Analyzing ICFG sina4f.c [2020-09-04 17:44:26,620 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:26,629 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:26,648 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:26,672 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:26,672 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:26,672 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:26,673 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:26,673 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:26,673 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:26,673 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:26,673 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:26,691 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-09-04 17:44:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-04 17:44:26,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:26,705 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] [2020-09-04 17:44:26,705 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:26,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:26,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1015859133, now seen corresponding path program 1 times [2020-09-04 17:44:26,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:26,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440655006] [2020-09-04 17:44:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:26,789 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:26,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:26,991 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 17:44:26,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440655006] [2020-09-04 17:44:26,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:26,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:26,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244675316] [2020-09-04 17:44:27,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:27,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:27,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:27,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:27,024 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 3 states. [2020-09-04 17:44:27,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:27,249 INFO L93 Difference]: Finished difference Result 145 states and 168 transitions. [2020-09-04 17:44:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:27,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-09-04 17:44:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:27,263 INFO L225 Difference]: With dead ends: 145 [2020-09-04 17:44:27,264 INFO L226 Difference]: Without dead ends: 72 [2020-09-04 17:44:27,269 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 17:44:27,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-04 17:44:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-04 17:44:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-04 17:44:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-09-04 17:44:27,330 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 39 [2020-09-04 17:44:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:27,330 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-09-04 17:44:27,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:27,331 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-09-04 17:44:27,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-04 17:44:27,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:27,333 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] [2020-09-04 17:44:27,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:27,333 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:27,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:27,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1834550526, now seen corresponding path program 1 times [2020-09-04 17:44:27,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:27,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048759873] [2020-09-04 17:44:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:27,337 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:27,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:27,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:27,466 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 17:44:27,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048759873] [2020-09-04 17:44:27,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:27,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:27,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249284644] [2020-09-04 17:44:27,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:27,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:27,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:27,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:27,470 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 5 states. [2020-09-04 17:44:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:27,778 INFO L93 Difference]: Finished difference Result 146 states and 158 transitions. [2020-09-04 17:44:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:27,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-04 17:44:27,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:27,783 INFO L225 Difference]: With dead ends: 146 [2020-09-04 17:44:27,783 INFO L226 Difference]: Without dead ends: 104 [2020-09-04 17:44:27,785 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 17:44:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-04 17:44:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 76. [2020-09-04 17:44:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-04 17:44:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-09-04 17:44:27,808 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 39 [2020-09-04 17:44:27,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:27,809 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-09-04 17:44:27,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-09-04 17:44:27,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-04 17:44:27,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:27,811 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, 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 17:44:27,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:27,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:27,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:27,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1779508689, now seen corresponding path program 1 times [2020-09-04 17:44:27,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:27,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860008392] [2020-09-04 17:44:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:27,835 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:27,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:28,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:28,046 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:44:28,047 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:28,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:28,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:28 BoogieIcfgContainer [2020-09-04 17:44:28,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:28,075 INFO L168 Benchmark]: Toolchain (without parser) took 2433.59 ms. Allocated memory was 145.2 MB in the beginning and 234.9 MB in the end (delta: 89.7 MB). Free memory was 101.0 MB in the beginning and 178.6 MB in the end (delta: -77.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:28,076 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 145.2 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-04 17:44:28,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.60 ms. Allocated memory is still 145.2 MB. Free memory was 100.8 MB in the beginning and 90.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:28,078 INFO L168 Benchmark]: Boogie Preprocessor took 143.34 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 90.0 MB in the beginning and 179.5 MB in the end (delta: -89.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:28,079 INFO L168 Benchmark]: RCFGBuilder took 504.73 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 157.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:28,080 INFO L168 Benchmark]: TraceAbstraction took 1466.60 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 156.8 MB in the beginning and 178.6 MB in the end (delta: -21.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:28,084 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 145.2 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 313.60 ms. Allocated memory is still 145.2 MB. Free memory was 100.8 MB in the beginning and 90.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.34 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 90.0 MB in the beginning and 179.5 MB in the end (delta: -89.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 504.73 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 157.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1466.60 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 156.8 MB in the beginning and 178.6 MB in the end (delta: -21.8 MB). Peak memory consumption was 10.7 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; [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 sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i