/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/sina2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:53,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:53,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:53,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:53,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:53,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:53,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:53,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:53,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:53,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:53,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:53,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:53,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:53,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:53,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:53,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:53,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:53,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:53,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:53,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:53,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:53,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:53,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:53,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:53,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:46:53,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:46:53,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:46:53,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:46:53,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:46:53,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:46:53,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:46:53,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:46:53,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:46:53,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:46:53,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:46:53,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:46:53,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:46:53,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:46:53,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:53,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:53,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:53,944 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 04:46:53,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:53,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:53,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:53,980 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:53,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:53,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:53,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:53,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:53,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:53,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:53,982 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:53,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:53,984 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:53,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:53,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:53,985 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:53,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:53,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:53,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:53,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:53,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:53,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:53,986 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:53,987 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:54,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:54,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:54,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:54,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:54,450 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:54,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina2f.c [2021-02-24 04:46:54,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0981081/8cba443aef81434d9053d6a08c13cf06/FLAGead5e62d7 [2021-02-24 04:46:55,242 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:55,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina2f.c [2021-02-24 04:46:55,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0981081/8cba443aef81434d9053d6a08c13cf06/FLAGead5e62d7 [2021-02-24 04:46:55,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0981081/8cba443aef81434d9053d6a08c13cf06 [2021-02-24 04:46:55,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:55,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:55,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:55,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:55,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:55,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:55" (1/1) ... [2021-02-24 04:46:55,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272edc1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:55, skipping insertion in model container [2021-02-24 04:46:55,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:55" (1/1) ... [2021-02-24 04:46:55,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:55,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:55,777 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/sina2f.c[589,602] [2021-02-24 04:46:55,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:55,807 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:55,820 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/sina2f.c[589,602] [2021-02-24 04:46:55,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:55,846 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:55,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:55 WrapperNode [2021-02-24 04:46:55,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:55,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:55,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:55,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:55,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:55" (1/1) ... [2021-02-24 04:46:55,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:55" (1/1) ... [2021-02-24 04:46:55,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:55" (1/1) ... [2021-02-24 04:46:55,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:55" (1/1) ... [2021-02-24 04:46:55,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:55" (1/1) ... [2021-02-24 04:46:55,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:55" (1/1) ... [2021-02-24 04:46:55,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:55" (1/1) ... [2021-02-24 04:46:55,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:55,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:55,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:55,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:55,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:55" (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 04:46:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:55,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:55,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:56,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:56,463 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-24 04:46:56,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:56 BoogieIcfgContainer [2021-02-24 04:46:56,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:56,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:56,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:56,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:56,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:55" (1/3) ... [2021-02-24 04:46:56,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1405df79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:56, skipping insertion in model container [2021-02-24 04:46:56,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:55" (2/3) ... [2021-02-24 04:46:56,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1405df79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:56, skipping insertion in model container [2021-02-24 04:46:56,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:56" (3/3) ... [2021-02-24 04:46:56,475 INFO L111 eAbstractionObserver]: Analyzing ICFG sina2f.c [2021-02-24 04:46:56,485 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:56,494 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:56,514 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:56,553 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:56,554 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:56,554 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:56,554 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:56,554 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:56,554 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:56,554 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:56,555 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:56,582 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-24 04:46:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-24 04:46:56,601 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:56,604 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] [2021-02-24 04:46:56,604 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:56,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:56,616 INFO L82 PathProgramCache]: Analyzing trace with hash 164477213, now seen corresponding path program 1 times [2021-02-24 04:46:56,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:56,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472960550] [2021-02-24 04:46:56,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:56,738 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:57,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:57,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:57,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:57,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:57,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:57,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:57,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:57,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:57,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:57,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:57,158 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 04:46:57,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472960550] [2021-02-24 04:46:57,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:57,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:57,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4711231] [2021-02-24 04:46:57,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:57,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:57,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:57,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:57,188 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2021-02-24 04:46:57,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:57,436 INFO L93 Difference]: Finished difference Result 131 states and 150 transitions. [2021-02-24 04:46:57,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:57,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2021-02-24 04:46:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:57,448 INFO L225 Difference]: With dead ends: 131 [2021-02-24 04:46:57,448 INFO L226 Difference]: Without dead ends: 67 [2021-02-24 04:46:57,452 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 04:46:57,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-02-24 04:46:57,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-02-24 04:46:57,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-24 04:46:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-02-24 04:46:57,507 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 40 [2021-02-24 04:46:57,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:57,508 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-02-24 04:46:57,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:57,508 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-02-24 04:46:57,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-24 04:46:57,510 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:57,510 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] [2021-02-24 04:46:57,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:57,511 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:57,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:57,512 INFO L82 PathProgramCache]: Analyzing trace with hash 2116002163, now seen corresponding path program 1 times [2021-02-24 04:46:57,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:57,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311372481] [2021-02-24 04:46:57,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:57,515 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:57,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:57,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:57,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:57,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:57,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:57,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:57,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:57,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:57,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:57,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:57,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:57,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:57,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:57,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:57,659 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 04:46:57,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311372481] [2021-02-24 04:46:57,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:57,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:57,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740874369] [2021-02-24 04:46:57,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:57,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:57,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:57,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:57,663 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 5 states. [2021-02-24 04:46:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:57,890 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2021-02-24 04:46:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:57,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2021-02-24 04:46:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:57,894 INFO L225 Difference]: With dead ends: 127 [2021-02-24 04:46:57,894 INFO L226 Difference]: Without dead ends: 93 [2021-02-24 04:46:57,896 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 [2021-02-24 04:46:57,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-02-24 04:46:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 70. [2021-02-24 04:46:57,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-02-24 04:46:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2021-02-24 04:46:57,918 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 40 [2021-02-24 04:46:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:57,919 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2021-02-24 04:46:57,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2021-02-24 04:46:57,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-24 04:46:57,921 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:57,921 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] [2021-02-24 04:46:57,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:57,922 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:57,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:57,923 INFO L82 PathProgramCache]: Analyzing trace with hash 577792164, now seen corresponding path program 1 times [2021-02-24 04:46:57,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:57,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832135079] [2021-02-24 04:46:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:57,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:57,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:57,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:57,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:57,978 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:46:57,993 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:46:58,000 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-24 04:46:58,003 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-24 04:46:58,004 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:58,086 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:58,134 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:58,194 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:46:58,195 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:58,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:58,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:58 BoogieIcfgContainer [2021-02-24 04:46:58,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:58,219 INFO L168 Benchmark]: Toolchain (without parser) took 2646.64 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 63.2 MB in the end (delta: 64.2 MB). Peak memory consumption was 65.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:58,219 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:58,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.90 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:58,221 INFO L168 Benchmark]: Boogie Preprocessor took 40.76 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:58,222 INFO L168 Benchmark]: RCFGBuilder took 575.91 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 124.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:58,223 INFO L168 Benchmark]: TraceAbstraction took 1749.88 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 63.2 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:58,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.90 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.76 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 575.91 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 124.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1749.88 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 63.2 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.6 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] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i