/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:28:03,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:28:03,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:28:03,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:28:03,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:28:03,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:28:03,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:28:03,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:28:03,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:28:03,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:28:03,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:28:03,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:28:03,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:28:03,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:28:03,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:28:03,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:28:03,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:28:03,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:28:03,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:28:03,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:28:03,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:28:03,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:28:03,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:28:03,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:28:03,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:28:03,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:28:03,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:28:03,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:28:03,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:28:03,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:28:03,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:28:03,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:28:03,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:28:03,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:28:03,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:28:03,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:28:03,301 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 [2020-09-21 10:28:03,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:28:03,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:28:03,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:28:03,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:28:03,343 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:28:03,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:28:03,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:28:03,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:28:03,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:28:03,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:28:03,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:28:03,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:28:03,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:28:03,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:28:03,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:28:03,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:28:03,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:28:03,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:28:03,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:28:03,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:28:03,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:28:03,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:28:03,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:28:03,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:28:03,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:28:03,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:28:03,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:28:03,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:28:03,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:28:03,349 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 -> false [2020-09-21 10:28:03,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:28:03,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:28:03,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:28:03,940 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:28:03,941 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:28:03,942 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2020-09-21 10:28:04,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07d128ad6/cf358683108149bfb309fcdbcb593b25/FLAGfa55717d7 [2020-09-21 10:28:04,531 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:28:04,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs1f.c [2020-09-21 10:28:04,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07d128ad6/cf358683108149bfb309fcdbcb593b25/FLAGfa55717d7 [2020-09-21 10:28:04,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07d128ad6/cf358683108149bfb309fcdbcb593b25 [2020-09-21 10:28:04,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:28:04,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:28:04,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:04,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:28:04,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:28:04,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:04" (1/1) ... [2020-09-21 10:28:04,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:04, skipping insertion in model container [2020-09-21 10:28:04,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:04" (1/1) ... [2020-09-21 10:28:04,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:28:04,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:28:05,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:05,168 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:28:05,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:05,209 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:28:05,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:05 WrapperNode [2020-09-21 10:28:05,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:05,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:28:05,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:28:05,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:28:05,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:05" (1/1) ... [2020-09-21 10:28:05,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:05" (1/1) ... [2020-09-21 10:28:05,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:05" (1/1) ... [2020-09-21 10:28:05,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:05" (1/1) ... [2020-09-21 10:28:05,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:05" (1/1) ... [2020-09-21 10:28:05,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:05" (1/1) ... [2020-09-21 10:28:05,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:05" (1/1) ... [2020-09-21 10:28:05,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:28:05,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:28:05,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:28:05,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:28:05,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:05" (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 [2020-09-21 10:28:05,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:28:05,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:28:05,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 10:28:05,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 10:28:05,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:28:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:28:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:28:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 10:28:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 10:28:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:28:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:28:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:28:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:28:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:28:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:28:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:28:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:28:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:28:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:28:05,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:28:05,767 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-21 10:28:05,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:05 BoogieIcfgContainer [2020-09-21 10:28:05,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:28:05,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:28:05,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:28:05,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:28:05,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:28:04" (1/3) ... [2020-09-21 10:28:05,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a42e4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:05, skipping insertion in model container [2020-09-21 10:28:05,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:05" (2/3) ... [2020-09-21 10:28:05,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a42e4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:05, skipping insertion in model container [2020-09-21 10:28:05,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:05" (3/3) ... [2020-09-21 10:28:05,782 INFO L109 eAbstractionObserver]: Analyzing ICFG brs1f.c [2020-09-21 10:28:05,794 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:28:05,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:28:05,832 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:28:05,861 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:28:05,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:28:05,862 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:28:05,862 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:28:05,862 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:28:05,862 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:28:05,862 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:28:05,862 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:28:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-21 10:28:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 10:28:05,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:05,895 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] [2020-09-21 10:28:05,896 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:05,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:05,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-09-21 10:28:05,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:05,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970704822] [2020-09-21 10:28:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:06,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:06,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970704822] [2020-09-21 10:28:06,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:06,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:28:06,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72090884] [2020-09-21 10:28:06,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:28:06,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:06,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:28:06,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:28:06,192 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-09-21 10:28:06,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:06,334 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-09-21 10:28:06,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:28:06,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 10:28:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:06,349 INFO L225 Difference]: With dead ends: 56 [2020-09-21 10:28:06,350 INFO L226 Difference]: Without dead ends: 26 [2020-09-21 10:28:06,354 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 [2020-09-21 10:28:06,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-21 10:28:06,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-21 10:28:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-21 10:28:06,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-09-21 10:28:06,406 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2020-09-21 10:28:06,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:06,407 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-09-21 10:28:06,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:28:06,408 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-09-21 10:28:06,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 10:28:06,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:06,409 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] [2020-09-21 10:28:06,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:28:06,410 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:06,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:06,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-09-21 10:28:06,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:06,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238332811] [2020-09-21 10:28:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:06,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:06,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:06,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238332811] [2020-09-21 10:28:06,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:06,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:28:06,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095928956] [2020-09-21 10:28:06,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:28:06,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:06,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:28:06,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:28:06,546 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-09-21 10:28:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:06,686 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-09-21 10:28:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:28:06,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-21 10:28:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:06,688 INFO L225 Difference]: With dead ends: 42 [2020-09-21 10:28:06,689 INFO L226 Difference]: Without dead ends: 32 [2020-09-21 10:28:06,690 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 [2020-09-21 10:28:06,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-21 10:28:06,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-09-21 10:28:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-21 10:28:06,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-09-21 10:28:06,699 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2020-09-21 10:28:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:06,700 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-09-21 10:28:06,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:28:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-09-21 10:28:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 10:28:06,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:06,701 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] [2020-09-21 10:28:06,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:28:06,702 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:06,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:06,702 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-09-21 10:28:06,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:06,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241664384] [2020-09-21 10:28:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:28:06,747 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:28:06,747 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:28:06,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:28:06,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:28:06 BoogieIcfgContainer [2020-09-21 10:28:06,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:28:06,781 INFO L168 Benchmark]: Toolchain (without parser) took 1896.95 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 109.8 MB in the end (delta: -7.3 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:06,782 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:28:06,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.10 ms. Allocated memory is still 139.5 MB. Free memory was 101.9 MB in the beginning and 91.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:06,784 INFO L168 Benchmark]: Boogie Preprocessor took 127.21 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 91.5 MB in the beginning and 180.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:06,785 INFO L168 Benchmark]: RCFGBuilder took 434.44 ms. Allocated memory is still 202.9 MB. Free memory was 180.7 MB in the beginning and 163.2 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:06,786 INFO L168 Benchmark]: TraceAbstraction took 1003.15 ms. Allocated memory is still 202.9 MB. Free memory was 162.5 MB in the beginning and 109.8 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:06,790 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.10 ms. Allocated memory is still 139.5 MB. Free memory was 101.9 MB in the beginning and 91.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.21 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 91.5 MB in the beginning and 180.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.44 ms. Allocated memory is still 202.9 MB. Free memory was 180.7 MB in the beginning and 163.2 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1003.15 ms. Allocated memory is still 202.9 MB. Free memory was 162.5 MB in the beginning and 109.8 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 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] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i