/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/brs4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:16:13,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:16:13,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:16:13,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:16:13,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:16:13,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:16:13,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:16:13,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:16:13,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:16:13,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:16:13,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:16:13,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:16:13,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:16:13,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:16:13,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:16:13,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:16:13,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:16:13,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:16:13,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:16:13,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:16:13,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:16:13,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:16:13,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:16:13,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:16:13,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:16:13,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:16:13,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:16:13,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:16:13,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:16:13,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:16:13,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:16:13,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:16:13,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:16:13,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:16:13,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:16:13,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:16:13,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:16:13,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:16:13,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:16:13,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:16:13,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:16:13,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:16:13,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:16:13,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:16:13,294 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:16:13,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:16:13,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:16:13,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:13,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:16:13,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:16:13,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:16:13,296 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:16:13,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:16:13,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:16:13,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:16:13,762 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:16:13,763 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:16:13,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs4f.c [2021-02-21 21:16:13,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b428d920/d31488039f8b41bcab4fdd00345de635/FLAG93a1e94e1 [2021-02-21 21:16:14,496 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:16:14,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs4f.c [2021-02-21 21:16:14,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b428d920/d31488039f8b41bcab4fdd00345de635/FLAG93a1e94e1 [2021-02-21 21:16:14,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b428d920/d31488039f8b41bcab4fdd00345de635 [2021-02-21 21:16:14,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:16:14,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:16:14,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:14,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:16:14,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:16:14,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:14" (1/1) ... [2021-02-21 21:16:14,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100436eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:14, skipping insertion in model container [2021-02-21 21:16:14,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:14" (1/1) ... [2021-02-21 21:16:14,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:16:14,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:16:15,130 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs4f.c[588,601] [2021-02-21 21:16:15,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:15,175 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:16:15,190 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs4f.c[588,601] [2021-02-21 21:16:15,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:15,244 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:16:15,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:15 WrapperNode [2021-02-21 21:16:15,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:15,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:16:15,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:16:15,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:16:15,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:15" (1/1) ... [2021-02-21 21:16:15,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:15" (1/1) ... [2021-02-21 21:16:15,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:15" (1/1) ... [2021-02-21 21:16:15,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:15" (1/1) ... [2021-02-21 21:16:15,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:15" (1/1) ... [2021-02-21 21:16:15,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:15" (1/1) ... [2021-02-21 21:16:15,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:15" (1/1) ... [2021-02-21 21:16:15,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:16:15,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:16:15,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:16:15,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:16:15,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:15,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:16:15,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:16:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:16:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:16:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:16:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:16:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:16:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:16:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:16:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:16:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:16:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:16:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:16:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:16:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:16:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:16:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:16:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:16:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:16:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:16:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:16:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:16:15,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:16:15,917 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 21:16:15,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:15 BoogieIcfgContainer [2021-02-21 21:16:15,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:16:15,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:16:15,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:16:15,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:16:15,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:16:14" (1/3) ... [2021-02-21 21:16:15,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5b07df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:15, skipping insertion in model container [2021-02-21 21:16:15,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:15" (2/3) ... [2021-02-21 21:16:15,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5b07df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:15, skipping insertion in model container [2021-02-21 21:16:15,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:15" (3/3) ... [2021-02-21 21:16:15,928 INFO L111 eAbstractionObserver]: Analyzing ICFG brs4f.c [2021-02-21 21:16:15,936 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:16:15,940 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:16:15,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:16:15,986 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:16:15,986 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:16:15,986 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:16:15,986 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:16:15,986 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:16:15,987 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:16:15,987 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:16:15,987 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:16:16,008 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2021-02-21 21:16:16,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-21 21:16:16,018 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:16,019 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] [2021-02-21 21:16:16,020 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:16,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:16,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1589495831, now seen corresponding path program 1 times [2021-02-21 21:16:16,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:16,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436043659] [2021-02-21 21:16:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:16,110 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:16,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:16,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:16,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:16,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:16,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:16,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:16,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:16,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:16,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:16,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:16,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436043659] [2021-02-21 21:16:16,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:16,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:16:16,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807024664] [2021-02-21 21:16:16,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:16:16,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:16,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:16:16,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:16,456 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2021-02-21 21:16:16,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:16,636 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-02-21 21:16:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:16:16,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-02-21 21:16:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:16,646 INFO L225 Difference]: With dead ends: 107 [2021-02-21 21:16:16,647 INFO L226 Difference]: Without dead ends: 52 [2021-02-21 21:16:16,650 INFO L677 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 [2021-02-21 21:16:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-21 21:16:16,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-02-21 21:16:16,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-21 21:16:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-02-21 21:16:16,704 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 35 [2021-02-21 21:16:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:16,705 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-02-21 21:16:16,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:16:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-02-21 21:16:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-21 21:16:16,707 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:16,707 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] [2021-02-21 21:16:16,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:16:16,708 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:16,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:16,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1961847080, now seen corresponding path program 1 times [2021-02-21 21:16:16,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:16,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944268090] [2021-02-21 21:16:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:16,714 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:16,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:16,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:16,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:16,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:16,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:16,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:16,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:16,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:16,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:16,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:16,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:16,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:16,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:16,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:16,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944268090] [2021-02-21 21:16:16,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:16,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:16,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305617170] [2021-02-21 21:16:16,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:16,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:16,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:16,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:16,895 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 5 states. [2021-02-21 21:16:17,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:17,125 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-02-21 21:16:17,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:17,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2021-02-21 21:16:17,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:17,127 INFO L225 Difference]: With dead ends: 86 [2021-02-21 21:16:17,128 INFO L226 Difference]: Without dead ends: 61 [2021-02-21 21:16:17,129 INFO L677 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 [2021-02-21 21:16:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-21 21:16:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-02-21 21:16:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-21 21:16:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-02-21 21:16:17,146 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 35 [2021-02-21 21:16:17,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:17,146 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-02-21 21:16:17,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-02-21 21:16:17,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-21 21:16:17,148 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:17,149 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] [2021-02-21 21:16:17,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:16:17,149 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:17,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:17,150 INFO L82 PathProgramCache]: Analyzing trace with hash 2023038414, now seen corresponding path program 1 times [2021-02-21 21:16:17,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:17,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023120472] [2021-02-21 21:16:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:17,221 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:17,223 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:17,267 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:17,306 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:17,358 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:16:17,358 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:16:17,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:16:17,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:16:17 BoogieIcfgContainer [2021-02-21 21:16:17,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:16:17,382 INFO L168 Benchmark]: Toolchain (without parser) took 2541.66 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 83.6 MB in the end (delta: 44.3 MB). Peak memory consumption was 44.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:17,382 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:16:17,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.91 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:17,384 INFO L168 Benchmark]: Boogie Preprocessor took 79.36 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:17,385 INFO L168 Benchmark]: RCFGBuilder took 592.45 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 128.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:17,386 INFO L168 Benchmark]: TraceAbstraction took 1458.96 ms. Allocated memory is still 151.0 MB. Free memory was 127.8 MB in the beginning and 83.6 MB in the end (delta: 44.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:17,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 387.91 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.36 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 592.45 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 128.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1458.96 ms. Allocated memory is still 151.0 MB. Free memory was 127.8 MB in the beginning and 83.6 MB in the end (delta: 44.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i