/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/array-fpi/s12iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:42,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:42,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:42,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:42,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:42,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:42,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:42,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:42,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:42,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:42,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:42,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:42,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:42,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:42,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:42,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:42,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:42,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:42,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:42,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:42,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:42,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:42,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:42,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:42,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:46:42,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:46:42,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:46:42,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:46:42,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:46:42,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:46:42,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:46:42,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:46:42,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:46:42,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:46:42,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:46:42,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:46:42,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:46:42,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:46:42,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:42,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:42,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:42,315 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:46:42,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:42,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:42,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:42,329 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:42,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:42,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:42,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:42,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:42,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:42,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:42,331 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:42,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:42,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:42,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:42,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:42,332 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:42,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:42,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:42,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:42,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:42,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:42,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:42,334 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:42,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:42,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:42,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:42,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:42,709 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:42,709 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:42,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s12iff.c [2021-02-24 04:46:42,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073395c16/83da46bc9b15468095bb0a8124b9ec74/FLAGe6157180a [2021-02-24 04:46:43,412 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:43,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s12iff.c [2021-02-24 04:46:43,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073395c16/83da46bc9b15468095bb0a8124b9ec74/FLAGe6157180a [2021-02-24 04:46:43,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073395c16/83da46bc9b15468095bb0a8124b9ec74 [2021-02-24 04:46:43,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:43,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:43,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:43,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:43,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:43,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:43" (1/1) ... [2021-02-24 04:46:43,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33bceb4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:43, skipping insertion in model container [2021-02-24 04:46:43,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:43" (1/1) ... [2021-02-24 04:46:43,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:43,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:44,089 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/s12iff.c[589,602] [2021-02-24 04:46:44,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:44,120 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:44,136 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/s12iff.c[589,602] [2021-02-24 04:46:44,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:44,174 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:44,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:44 WrapperNode [2021-02-24 04:46:44,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:44,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:44,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:44,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:44,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:44" (1/1) ... [2021-02-24 04:46:44,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:44" (1/1) ... [2021-02-24 04:46:44,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:44" (1/1) ... [2021-02-24 04:46:44,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:44" (1/1) ... [2021-02-24 04:46:44,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:44" (1/1) ... [2021-02-24 04:46:44,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:44" (1/1) ... [2021-02-24 04:46:44,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:44" (1/1) ... [2021-02-24 04:46:44,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:44,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:44,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:44,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:44,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:44" (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 [2021-02-24 04:46:44,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:44,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:44,379 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:44,381 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:44,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:44,381 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:44,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:44,382 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:44,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:44,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:44,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:44,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:44,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:44,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:44,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:44,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:44,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:44,859 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 04:46:44,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:44 BoogieIcfgContainer [2021-02-24 04:46:44,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:44,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:44,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:44,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:44,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:43" (1/3) ... [2021-02-24 04:46:44,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be22102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:44, skipping insertion in model container [2021-02-24 04:46:44,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:44" (2/3) ... [2021-02-24 04:46:44,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be22102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:44, skipping insertion in model container [2021-02-24 04:46:44,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:44" (3/3) ... [2021-02-24 04:46:44,870 INFO L111 eAbstractionObserver]: Analyzing ICFG s12iff.c [2021-02-24 04:46:44,880 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:44,885 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:44,901 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:44,922 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:44,922 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:44,922 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:44,922 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:44,922 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:44,922 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:44,922 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:44,922 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:44,938 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2021-02-24 04:46:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 04:46:44,949 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:44,949 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] [2021-02-24 04:46:44,950 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:44,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:44,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1439408661, now seen corresponding path program 1 times [2021-02-24 04:46:44,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:44,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580790005] [2021-02-24 04:46:44,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:45,039 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:45,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:45,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:45,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:45,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:45,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:45,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:45,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:45,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:45,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:45,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580790005] [2021-02-24 04:46:45,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:45,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:45,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533904057] [2021-02-24 04:46:45,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:45,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:45,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:45,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:45,315 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2021-02-24 04:46:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:45,582 INFO L93 Difference]: Finished difference Result 149 states and 168 transitions. [2021-02-24 04:46:45,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:45,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-24 04:46:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:45,594 INFO L225 Difference]: With dead ends: 149 [2021-02-24 04:46:45,594 INFO L226 Difference]: Without dead ends: 73 [2021-02-24 04:46:45,598 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 [2021-02-24 04:46:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-24 04:46:45,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-24 04:46:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-24 04:46:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-02-24 04:46:45,657 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 38 [2021-02-24 04:46:45,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:45,657 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-02-24 04:46:45,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:45,658 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-02-24 04:46:45,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 04:46:45,660 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:45,660 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] [2021-02-24 04:46:45,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:45,661 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:45,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:45,662 INFO L82 PathProgramCache]: Analyzing trace with hash -415145042, now seen corresponding path program 1 times [2021-02-24 04:46:45,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:45,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175132454] [2021-02-24 04:46:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:45,667 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:45,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:45,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:45,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:45,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:45,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:45,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:45,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:45,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:45,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:45,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:45,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:45,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:45,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:45,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:45,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175132454] [2021-02-24 04:46:45,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:45,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:45,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038067832] [2021-02-24 04:46:45,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:45,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:45,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:45,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:45,873 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 5 states. [2021-02-24 04:46:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:46,222 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2021-02-24 04:46:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:46,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-24 04:46:46,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:46,225 INFO L225 Difference]: With dead ends: 147 [2021-02-24 04:46:46,226 INFO L226 Difference]: Without dead ends: 107 [2021-02-24 04:46:46,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:46:46,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-24 04:46:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 76. [2021-02-24 04:46:46,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-24 04:46:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-02-24 04:46:46,244 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 38 [2021-02-24 04:46:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:46,245 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-02-24 04:46:46,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:46,245 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-02-24 04:46:46,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-24 04:46:46,247 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:46,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:46,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:46,248 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:46,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:46,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1781170039, now seen corresponding path program 1 times [2021-02-24 04:46:46,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:46,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641312958] [2021-02-24 04:46:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:46,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:46,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:46,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:46,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:46,305 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:46:46,318 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:46:46,323 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-24 04:46:46,326 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-24 04:46:46,327 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:46,412 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:46,451 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:46,488 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:46:46,488 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:46,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:46,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:46 BoogieIcfgContainer [2021-02-24 04:46:46,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:46,510 INFO L168 Benchmark]: Toolchain (without parser) took 2672.40 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 135.8 MB in the beginning and 116.4 MB in the end (delta: 19.4 MB). Peak memory consumption was 52.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:46,510 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 160.4 MB. Free memory is still 132.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:46,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.25 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 124.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:46,512 INFO L168 Benchmark]: Boogie Preprocessor took 87.27 ms. Allocated memory is still 160.4 MB. Free memory was 124.5 MB in the beginning and 122.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:46,513 INFO L168 Benchmark]: RCFGBuilder took 597.10 ms. Allocated memory is still 160.4 MB. Free memory was 122.9 MB in the beginning and 137.2 MB in the end (delta: -14.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:46,514 INFO L168 Benchmark]: TraceAbstraction took 1645.09 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 137.2 MB in the beginning and 116.4 MB in the end (delta: 20.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:46,517 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 160.4 MB. Free memory is still 132.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 323.25 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 124.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 87.27 ms. Allocated memory is still 160.4 MB. Free memory was 124.5 MB in the beginning and 122.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 597.10 ms. Allocated memory is still 160.4 MB. Free memory was 122.9 MB in the beginning and 137.2 MB in the end (delta: -14.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1645.09 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 137.2 MB in the beginning and 116.4 MB in the end (delta: 20.8 MB). Peak memory consumption was 52.8 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] sum[0] = 1 [L32] i=0 [L32] COND TRUE i