/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/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:48:26,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:48:26,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:48:26,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:48:26,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:48:26,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:48:26,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:48:26,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:48:26,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:48:26,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:48:26,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:48:26,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:48:26,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:48:26,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:48:26,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:48:26,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:48:26,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:48:26,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:48:26,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:48:26,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:48:26,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:48:26,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:48:26,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:48:26,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:48:26,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:48:26,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:48:26,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:48:26,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:48:26,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:48:26,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:48:26,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:48:26,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:48:26,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:48:26,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:48:26,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:48:26,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:48:26,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:48:26,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:48:26,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:48:26,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:48:26,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:48:26,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:48:26,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:48:26,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:48:26,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:48:26,277 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:48:26,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:48:26,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:48:26,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:48:26,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:48:26,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:48:26,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:48:26,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:48:26,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:48:26,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:48:26,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:48:26,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:48:26,281 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:48:26,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:48:26,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:48:26,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:48:26,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:48:26,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:48:26,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:48:26,283 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:48:26,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:48:26,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:48:26,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:48:26,718 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:48:26,719 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:48:26,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2021-02-23 18:48:26,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e55097e/bde9f0cfdbf445128e8178c86ea62300/FLAG2d69db19b [2021-02-23 18:48:27,462 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:48:27,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2021-02-23 18:48:27,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e55097e/bde9f0cfdbf445128e8178c86ea62300/FLAG2d69db19b [2021-02-23 18:48:27,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e55097e/bde9f0cfdbf445128e8178c86ea62300 [2021-02-23 18:48:27,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:48:27,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:48:27,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:48:27,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:48:27,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:48:27,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:48:27" (1/1) ... [2021-02-23 18:48:27,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a40aa66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:27, skipping insertion in model container [2021-02-23 18:48:27,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:48:27" (1/1) ... [2021-02-23 18:48:27,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:48:27,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:48:28,085 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c[363,376] [2021-02-23 18:48:28,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:48:28,119 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:48:28,135 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c[363,376] [2021-02-23 18:48:28,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:48:28,170 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:48:28,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28 WrapperNode [2021-02-23 18:48:28,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:48:28,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:48:28,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:48:28,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:48:28,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ... [2021-02-23 18:48:28,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ... [2021-02-23 18:48:28,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ... [2021-02-23 18:48:28,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ... [2021-02-23 18:48:28,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ... [2021-02-23 18:48:28,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ... [2021-02-23 18:48:28,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ... [2021-02-23 18:48:28,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:48:28,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:48:28,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:48:28,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:48:28,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (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 [2021-02-23 18:48:28,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:48:28,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:48:28,423 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:48:28,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:48:28,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:48:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:48:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:48:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:48:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:48:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:48:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:48:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-23 18:48:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:48:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:48:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:48:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:48:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:48:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:48:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:48:29,140 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:48:29,140 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 18:48:29,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:48:29 BoogieIcfgContainer [2021-02-23 18:48:29,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:48:29,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:48:29,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:48:29,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:48:29,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:48:27" (1/3) ... [2021-02-23 18:48:29,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a84c149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:48:29, skipping insertion in model container [2021-02-23 18:48:29,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (2/3) ... [2021-02-23 18:48:29,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a84c149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:48:29, skipping insertion in model container [2021-02-23 18:48:29,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:48:29" (3/3) ... [2021-02-23 18:48:29,153 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2021-02-23 18:48:29,161 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:48:29,167 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:48:29,189 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:48:29,217 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:48:29,218 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:48:29,218 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:48:29,218 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:48:29,218 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:48:29,218 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:48:29,218 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:48:29,219 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:48:29,237 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-02-23 18:48:29,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 18:48:29,249 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:48:29,250 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] [2021-02-23 18:48:29,251 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:48:29,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:48:29,261 INFO L82 PathProgramCache]: Analyzing trace with hash 748821666, now seen corresponding path program 1 times [2021-02-23 18:48:29,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:48:29,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877004258] [2021-02-23 18:48:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:48:29,362 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:48:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:29,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:29,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:29,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:29,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:29,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:48:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:29,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:29,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:48:29,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877004258] [2021-02-23 18:48:29,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:48:29,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:48:29,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299731099] [2021-02-23 18:48:29,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:48:29,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:48:29,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:48:29,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:48:29,727 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2021-02-23 18:48:30,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:48:30,084 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2021-02-23 18:48:30,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:48:30,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2021-02-23 18:48:30,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:48:30,098 INFO L225 Difference]: With dead ends: 119 [2021-02-23 18:48:30,098 INFO L226 Difference]: Without dead ends: 62 [2021-02-23 18:48:30,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:48:30,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-02-23 18:48:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-02-23 18:48:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-23 18:48:30,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-02-23 18:48:30,177 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 33 [2021-02-23 18:48:30,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:48:30,177 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-02-23 18:48:30,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:48:30,178 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-02-23 18:48:30,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 18:48:30,180 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:48:30,180 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] [2021-02-23 18:48:30,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:48:30,180 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:48:30,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:48:30,181 INFO L82 PathProgramCache]: Analyzing trace with hash 274707514, now seen corresponding path program 1 times [2021-02-23 18:48:30,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:48:30,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616170411] [2021-02-23 18:48:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:48:30,185 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:48:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:30,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:30,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:30,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:30,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:48:30,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:30,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:48:30,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:30,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:48:30,470 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-23 18:48:30,471 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-23 18:48:30,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:30,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:30,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:48:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:30,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:30,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:48:30,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616170411] [2021-02-23 18:48:30,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:48:30,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:48:30,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621833612] [2021-02-23 18:48:30,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:48:30,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:48:30,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:48:30,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:48:30,527 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 6 states. [2021-02-23 18:48:30,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:48:30,888 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-02-23 18:48:30,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 18:48:30,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2021-02-23 18:48:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:48:30,892 INFO L225 Difference]: With dead ends: 133 [2021-02-23 18:48:30,892 INFO L226 Difference]: Without dead ends: 92 [2021-02-23 18:48:30,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:48:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-02-23 18:48:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65. [2021-02-23 18:48:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-23 18:48:30,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-02-23 18:48:30,914 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 33 [2021-02-23 18:48:30,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:48:30,915 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-02-23 18:48:30,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:48:30,915 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-02-23 18:48:30,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 18:48:30,917 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:48:30,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:48:30,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:48:30,917 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:48:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:48:30,918 INFO L82 PathProgramCache]: Analyzing trace with hash 427652598, now seen corresponding path program 1 times [2021-02-23 18:48:30,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:48:30,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693430422] [2021-02-23 18:48:30,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:48:43,083 WARN L202 SmtUtils]: Spent 12.14 s on a formula simplification. DAG size of input: 138 DAG size of output: 138 [2021-02-23 18:48:43,096 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:48:43,098 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:48:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:48:43,193 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:48:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:48:43,310 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:48:43,351 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:48:43,352 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:48:43,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:48:43,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:48:43 BoogieIcfgContainer [2021-02-23 18:48:43,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:48:43,376 INFO L168 Benchmark]: Toolchain (without parser) took 15552.42 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.9 MB in the beginning and 157.3 MB in the end (delta: -29.4 MB). Peak memory consumption was 83.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:48:43,377 INFO L168 Benchmark]: CDTParser took 1.07 ms. Allocated memory is still 151.0 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:48:43,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.83 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 117.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:48:43,379 INFO L168 Benchmark]: Boogie Preprocessor took 90.49 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:48:43,380 INFO L168 Benchmark]: RCFGBuilder took 879.15 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 133.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:48:43,381 INFO L168 Benchmark]: TraceAbstraction took 14229.46 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 132.5 MB in the beginning and 157.3 MB in the end (delta: -24.7 MB). Peak memory consumption was 87.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:48:43,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07 ms. Allocated memory is still 151.0 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 329.83 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 117.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.49 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 879.15 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 133.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14229.46 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 132.5 MB in the beginning and 157.3 MB in the end (delta: -24.7 MB). Peak memory consumption was 87.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 [L20] COND TRUE i