/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/s5liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:17:03,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:17:03,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:17:03,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:17:03,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:17:03,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:17:03,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:17:03,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:17:03,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:17:03,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:17:03,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:17:03,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:17:03,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:17:03,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:17:03,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:17:03,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:17:03,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:17:03,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:17:03,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:17:03,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:17:03,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:17:03,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:17:03,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:17:03,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:17:03,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 21:17:03,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 21:17:03,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 21:17:03,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 21:17:03,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 21:17:03,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 21:17:03,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 21:17:03,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 21:17:03,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 21:17:03,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 21:17:03,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 21:17:03,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 21:17:03,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 21:17:03,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 21:17:03,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:17:03,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:17:03,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:17:03,163 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 21:17:03,175 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:17:03,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:17:03,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:17:03,178 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:17:03,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:17:03,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:17:03,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:17:03,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:17:03,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:17:03,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:17:03,180 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:17:03,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:17:03,180 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:17:03,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:17:03,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:17:03,181 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:17:03,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:17:03,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:17:03,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:17:03,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:17:03,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:17:03,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:17:03,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:17:03,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:17:03,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:17:03,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:17:03,625 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:17:03,626 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:17:03,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5liff.c [2021-02-21 21:17:03,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8788a8db/1e3270317b3c4665b84031bc1593dd36/FLAG6a4012d7e [2021-02-21 21:17:04,338 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:17:04,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s5liff.c [2021-02-21 21:17:04,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8788a8db/1e3270317b3c4665b84031bc1593dd36/FLAG6a4012d7e [2021-02-21 21:17:04,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8788a8db/1e3270317b3c4665b84031bc1593dd36 [2021-02-21 21:17:04,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:17:04,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:17:04,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:04,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:17:04,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:17:04,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:04" (1/1) ... [2021-02-21 21:17:04,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c130f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:04, skipping insertion in model container [2021-02-21 21:17:04,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:04" (1/1) ... [2021-02-21 21:17:04,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:17:04,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:17:04,988 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/s5liff.c[589,602] [2021-02-21 21:17:05,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:05,028 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:17:05,041 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/s5liff.c[589,602] [2021-02-21 21:17:05,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:05,069 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:17:05,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:05 WrapperNode [2021-02-21 21:17:05,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:05,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:17:05,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:17:05,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:17:05,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:05" (1/1) ... [2021-02-21 21:17:05,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:05" (1/1) ... [2021-02-21 21:17:05,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:05" (1/1) ... [2021-02-21 21:17:05,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:05" (1/1) ... [2021-02-21 21:17:05,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:05" (1/1) ... [2021-02-21 21:17:05,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:05" (1/1) ... [2021-02-21 21:17:05,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:05" (1/1) ... [2021-02-21 21:17:05,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:17:05,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:17:05,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:17:05,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:17:05,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:05" (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 21:17:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:17:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:17:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:17:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:17:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:17:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:17:05,207 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:17:05,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:17:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:17:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:17:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:17:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:17:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:17:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:17:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:17:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:17:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:17:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:17:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:17:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:17:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:17:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:17:05,647 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:17:05,650 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 21:17:05,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:05 BoogieIcfgContainer [2021-02-21 21:17:05,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:17:05,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:17:05,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:17:05,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:17:05,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:17:04" (1/3) ... [2021-02-21 21:17:05,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3867c32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:05, skipping insertion in model container [2021-02-21 21:17:05,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:05" (2/3) ... [2021-02-21 21:17:05,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3867c32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:05, skipping insertion in model container [2021-02-21 21:17:05,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:05" (3/3) ... [2021-02-21 21:17:05,670 INFO L111 eAbstractionObserver]: Analyzing ICFG s5liff.c [2021-02-21 21:17:05,678 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:17:05,684 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:17:05,709 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:17:05,756 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:17:05,756 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:17:05,756 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:17:05,756 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:17:05,757 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:17:05,757 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:17:05,757 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:17:05,757 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:17:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-21 21:17:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 21:17:05,802 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:05,804 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] [2021-02-21 21:17:05,804 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:05,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:05,815 INFO L82 PathProgramCache]: Analyzing trace with hash -276473570, now seen corresponding path program 1 times [2021-02-21 21:17:05,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:05,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357587923] [2021-02-21 21:17:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:05,927 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:06,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:06,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:06,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:06,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:06,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:06,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:06,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:06,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:17:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:06,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:06,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:06,254 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 21:17:06,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357587923] [2021-02-21 21:17:06,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:06,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:17:06,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710786174] [2021-02-21 21:17:06,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:17:06,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:06,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:17:06,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:17:06,283 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2021-02-21 21:17:06,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:06,498 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2021-02-21 21:17:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:17:06,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-21 21:17:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:06,513 INFO L225 Difference]: With dead ends: 131 [2021-02-21 21:17:06,513 INFO L226 Difference]: Without dead ends: 64 [2021-02-21 21:17:06,520 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 21:17:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-21 21:17:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-21 21:17:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-21 21:17:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-02-21 21:17:06,606 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 38 [2021-02-21 21:17:06,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:06,607 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-02-21 21:17:06,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:17:06,608 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-02-21 21:17:06,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 21:17:06,611 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:06,611 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] [2021-02-21 21:17:06,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:17:06,612 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:06,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1119969012, now seen corresponding path program 1 times [2021-02-21 21:17:06,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:06,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413583289] [2021-02-21 21:17:06,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:06,629 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:06,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:06,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:06,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:06,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:06,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:06,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:17:06,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:06,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:06,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:06,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:06,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:06,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:17:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:06,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:06,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:06,818 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 21:17:06,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413583289] [2021-02-21 21:17:06,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:06,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:17:06,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306193262] [2021-02-21 21:17:06,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:17:06,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:06,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:17:06,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:17:06,822 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 5 states. [2021-02-21 21:17:07,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:07,032 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2021-02-21 21:17:07,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:17:07,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-21 21:17:07,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:07,035 INFO L225 Difference]: With dead ends: 120 [2021-02-21 21:17:07,035 INFO L226 Difference]: Without dead ends: 89 [2021-02-21 21:17:07,037 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 21:17:07,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-21 21:17:07,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2021-02-21 21:17:07,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-21 21:17:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-02-21 21:17:07,058 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 38 [2021-02-21 21:17:07,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:07,059 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-02-21 21:17:07,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:17:07,059 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-02-21 21:17:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 21:17:07,062 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:07,062 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] [2021-02-21 21:17:07,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:17:07,062 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:07,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:07,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1778519661, now seen corresponding path program 1 times [2021-02-21 21:17:07,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:07,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167520217] [2021-02-21 21:17:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:07,090 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:17:07,091 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:17:07,136 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:17:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:17:07,170 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:17:07,206 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:17:07,208 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:17:07,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:17:07,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:17:07 BoogieIcfgContainer [2021-02-21 21:17:07,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:17:07,229 INFO L168 Benchmark]: Toolchain (without parser) took 2492.47 ms. Allocated memory is still 158.3 MB. Free memory was 135.5 MB in the beginning and 103.2 MB in the end (delta: 32.3 MB). Peak memory consumption was 33.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:07,230 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 158.3 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:17:07,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.04 ms. Allocated memory is still 158.3 MB. Free memory was 134.4 MB in the beginning and 124.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:07,232 INFO L168 Benchmark]: Boogie Preprocessor took 42.66 ms. Allocated memory is still 158.3 MB. Free memory was 124.3 MB in the beginning and 122.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:07,233 INFO L168 Benchmark]: RCFGBuilder took 538.24 ms. Allocated memory is still 158.3 MB. Free memory was 122.6 MB in the beginning and 136.3 MB in the end (delta: -13.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:07,233 INFO L168 Benchmark]: TraceAbstraction took 1571.36 ms. Allocated memory is still 158.3 MB. Free memory was 135.7 MB in the beginning and 103.2 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:07,237 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 158.3 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 312.04 ms. Allocated memory is still 158.3 MB. Free memory was 134.4 MB in the beginning and 124.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.66 ms. Allocated memory is still 158.3 MB. Free memory was 124.3 MB in the beginning and 122.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 538.24 ms. Allocated memory is still 158.3 MB. Free memory was 122.6 MB in the beginning and 136.3 MB in the end (delta: -13.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1571.36 ms. Allocated memory is still 158.3 MB. Free memory was 135.7 MB in the beginning and 103.2 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.7 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] = N [L32] i=0 [L32] COND TRUE i