/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:50:47,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:50:47,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:50:47,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:50:47,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:50:47,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:50:47,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:50:47,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:50:47,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:50:47,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:50:47,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:50:47,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:50:47,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:50:47,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:50:47,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:50:47,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:50:47,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:50:47,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:50:47,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:50:47,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:50:47,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:50:47,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:50:47,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:50:47,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:50:47,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 15:50:47,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:50:47,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:50:47,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:50:47,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:50:47,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:50:47,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:50:47,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:50:47,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:50:47,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:50:47,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:50:47,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:50:47,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:50:47,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:50:47,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:50:47,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:50:47,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:50:47,365 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:50:47,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:50:47,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:50:47,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:50:47,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:50:47,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:50:47,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:50:47,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:50:47,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:50:47,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:50:47,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:50:47,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:50:47,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:50:47,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:50:47,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:50:47,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:50:47,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:50:47,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:50:47,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:50:47,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:50:47,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:50:47,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:50:47,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:50:47,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:50:47,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:50:47,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:50:47,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:50:47,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:50:47,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:50:47,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:50:47,685 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:50:47,686 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-21 15:50:47,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d4a85a3b/322413f6b54b4e259ce6e26815ca5d71/FLAG9d430a8e9 [2020-08-21 15:50:48,167 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:50:48,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-21 15:50:48,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d4a85a3b/322413f6b54b4e259ce6e26815ca5d71/FLAG9d430a8e9 [2020-08-21 15:50:48,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d4a85a3b/322413f6b54b4e259ce6e26815ca5d71 [2020-08-21 15:50:48,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:50:48,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:50:48,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:50:48,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:50:48,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:50:48,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:50:48" (1/1) ... [2020-08-21 15:50:48,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7beb14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:48, skipping insertion in model container [2020-08-21 15:50:48,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:50:48" (1/1) ... [2020-08-21 15:50:48,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:50:48,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:50:48,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:50:48,795 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:50:48,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:50:48,925 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:50:48,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:48 WrapperNode [2020-08-21 15:50:48,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:50:48,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:50:48,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:50:48,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:50:48,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:48" (1/1) ... [2020-08-21 15:50:48,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:48" (1/1) ... [2020-08-21 15:50:48,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:48" (1/1) ... [2020-08-21 15:50:48,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:48" (1/1) ... [2020-08-21 15:50:48,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:48" (1/1) ... [2020-08-21 15:50:48,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:48" (1/1) ... [2020-08-21 15:50:48,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:48" (1/1) ... [2020-08-21 15:50:48,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:50:48,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:50:48,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:50:48,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:50:48,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:48" (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 [2020-08-21 15:50:49,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:50:49,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:50:49,039 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 15:50:49,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 15:50:49,039 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:50:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:50:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:50:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 15:50:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 15:50:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:50:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:50:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:50:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:50:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:50:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:50:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:50:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:50:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:50:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:50:49,386 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:50:49,386 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 15:50:49,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:50:49 BoogieIcfgContainer [2020-08-21 15:50:49,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:50:49,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:50:49,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:50:49,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:50:49,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:50:48" (1/3) ... [2020-08-21 15:50:49,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6199b4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:50:49, skipping insertion in model container [2020-08-21 15:50:49,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:48" (2/3) ... [2020-08-21 15:50:49,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6199b4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:50:49, skipping insertion in model container [2020-08-21 15:50:49,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:50:49" (3/3) ... [2020-08-21 15:50:49,398 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-08-21 15:50:49,406 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:50:49,412 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:50:49,425 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:50:49,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:50:49,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:50:49,445 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:50:49,445 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:50:49,445 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:50:49,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:50:49,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:50:49,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:50:49,461 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-21 15:50:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 15:50:49,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:50:49,468 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] [2020-08-21 15:50:49,468 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:50:49,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:50:49,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-08-21 15:50:49,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:50:49,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029057521] [2020-08-21 15:50:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:50:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:50:49,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:50:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:50:49,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:50:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:50:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:50:49,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029057521] [2020-08-21 15:50:49,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:50:49,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:50:49,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206808422] [2020-08-21 15:50:49,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:50:49,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:50:49,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:50:49,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:50:49,710 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-21 15:50:49,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:50:49,856 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-21 15:50:49,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:50:49,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-08-21 15:50:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:50:49,871 INFO L225 Difference]: With dead ends: 76 [2020-08-21 15:50:49,872 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 15:50:49,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:50:49,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 15:50:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-21 15:50:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 15:50:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-08-21 15:50:49,921 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-08-21 15:50:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:50:49,922 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-08-21 15:50:49,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:50:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-08-21 15:50:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 15:50:49,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:50:49,924 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] [2020-08-21 15:50:49,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:50:49,924 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:50:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:50:49,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-08-21 15:50:49,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:50:49,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121221015] [2020-08-21 15:50:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:50:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:50:50,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:50:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:50:50,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:50:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:50:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:50:50,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121221015] [2020-08-21 15:50:50,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:50:50,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:50:50,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065384166] [2020-08-21 15:50:50,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:50:50,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:50:50,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:50:50,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:50:50,066 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-08-21 15:50:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:50:50,238 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-08-21 15:50:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:50:50,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-21 15:50:50,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:50:50,242 INFO L225 Difference]: With dead ends: 75 [2020-08-21 15:50:50,242 INFO L226 Difference]: Without dead ends: 52 [2020-08-21 15:50:50,243 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 [2020-08-21 15:50:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-21 15:50:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-08-21 15:50:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 15:50:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-08-21 15:50:50,259 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-08-21 15:50:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:50:50,260 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-08-21 15:50:50,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:50:50,260 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-08-21 15:50:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 15:50:50,262 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:50:50,262 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] [2020-08-21 15:50:50,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:50:50,262 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:50:50,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:50:50,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-08-21 15:50:50,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:50:50,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310300812] [2020-08-21 15:50:50,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:50:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:50:50,331 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:50:50,331 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:50:50,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:50:50,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:50:50 BoogieIcfgContainer [2020-08-21 15:50:50,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:50:50,358 INFO L168 Benchmark]: Toolchain (without parser) took 1780.94 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 102.0 MB in the beginning and 92.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. [2020-08-21 15:50:50,359 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-21 15:50:50,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.92 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 101.8 MB in the beginning and 181.7 MB in the end (delta: -79.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-21 15:50:50,361 INFO L168 Benchmark]: Boogie Preprocessor took 49.91 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-21 15:50:50,361 INFO L168 Benchmark]: RCFGBuilder took 411.81 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 159.5 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-08-21 15:50:50,362 INFO L168 Benchmark]: TraceAbstraction took 963.35 ms. Allocated memory is still 202.9 MB. Free memory was 158.8 MB in the beginning and 92.3 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:50:50,366 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 349.92 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 101.8 MB in the beginning and 181.7 MB in the end (delta: -79.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.91 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 411.81 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 159.5 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 963.35 ms. Allocated memory is still 202.9 MB. Free memory was 158.8 MB in the beginning and 92.3 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 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