/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/brs5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:14,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:14,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:14,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:14,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:14,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:14,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:14,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:14,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:14,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:14,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:14,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:14,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:14,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:14,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:14,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:14,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:14,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:14,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:14,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:14,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:14,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:14,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:14,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:14,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:46:14,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:46:14,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:46:14,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:46:14,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:46:14,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:46:14,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:46:14,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:46:14,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:46:14,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:46:14,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:46:14,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:46:14,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:46:14,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:46:14,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:14,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:14,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:14,151 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 04:46:14,163 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:14,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:14,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:14,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:14,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:14,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:14,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:14,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:14,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:14,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:14,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:14,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:14,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:14,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:14,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:14,167 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:14,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:14,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:14,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:14,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:14,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:14,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:14,168 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:14,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:14,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:14,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:14,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:14,536 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:14,536 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:14,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs5f.c [2021-02-24 04:46:14,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75bced642/9497e2cdb1b043b69fc7692e00f40d62/FLAG900b1a5d1 [2021-02-24 04:46:15,257 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:15,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs5f.c [2021-02-24 04:46:15,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75bced642/9497e2cdb1b043b69fc7692e00f40d62/FLAG900b1a5d1 [2021-02-24 04:46:15,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75bced642/9497e2cdb1b043b69fc7692e00f40d62 [2021-02-24 04:46:15,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:15,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:15,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:15,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:15,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:15,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:15" (1/1) ... [2021-02-24 04:46:15,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46cf45f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:15, skipping insertion in model container [2021-02-24 04:46:15,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:15" (1/1) ... [2021-02-24 04:46:15,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:15,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:15,854 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/brs5f.c[588,601] [2021-02-24 04:46:15,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:15,881 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:15,896 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/brs5f.c[588,601] [2021-02-24 04:46:15,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:15,921 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:15,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:15 WrapperNode [2021-02-24 04:46:15,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:15,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:15,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:15,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:15,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:15" (1/1) ... [2021-02-24 04:46:15,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:15" (1/1) ... [2021-02-24 04:46:15,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:15" (1/1) ... [2021-02-24 04:46:15,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:15" (1/1) ... [2021-02-24 04:46:15,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:15" (1/1) ... [2021-02-24 04:46:15,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:15" (1/1) ... [2021-02-24 04:46:15,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:15" (1/1) ... [2021-02-24 04:46:15,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:15,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:15,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:15,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:15,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:16,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:16,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:16,071 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:16,072 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:16,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:16,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:16,073 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:16,076 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:16,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:16,721 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:16,721 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 04:46:16,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:16 BoogieIcfgContainer [2021-02-24 04:46:16,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:16,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:16,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:16,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:16,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:15" (1/3) ... [2021-02-24 04:46:16,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f62111f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:16, skipping insertion in model container [2021-02-24 04:46:16,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:15" (2/3) ... [2021-02-24 04:46:16,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f62111f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:16, skipping insertion in model container [2021-02-24 04:46:16,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:16" (3/3) ... [2021-02-24 04:46:16,732 INFO L111 eAbstractionObserver]: Analyzing ICFG brs5f.c [2021-02-24 04:46:16,740 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:16,746 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:16,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:16,791 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:16,792 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:16,792 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:16,792 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:16,792 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:16,792 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:16,793 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:16,793 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:16,809 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2021-02-24 04:46:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 04:46:16,819 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:16,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:16,820 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:16,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:16,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1589495831, now seen corresponding path program 1 times [2021-02-24 04:46:16,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:16,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60628751] [2021-02-24 04:46:16,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:16,920 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:17,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:17,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:17,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,253 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 04:46:17,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60628751] [2021-02-24 04:46:17,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:17,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:17,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522043054] [2021-02-24 04:46:17,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:17,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:17,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:17,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:17,282 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2021-02-24 04:46:17,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:17,536 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-02-24 04:46:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:17,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-02-24 04:46:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:17,550 INFO L225 Difference]: With dead ends: 107 [2021-02-24 04:46:17,550 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 04:46:17,558 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 04:46:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 04:46:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-02-24 04:46:17,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-24 04:46:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-02-24 04:46:17,607 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 35 [2021-02-24 04:46:17,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:17,608 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-02-24 04:46:17,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-02-24 04:46:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 04:46:17,610 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:17,611 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] [2021-02-24 04:46:17,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:17,611 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:17,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:17,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1961847080, now seen corresponding path program 1 times [2021-02-24 04:46:17,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:17,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506980897] [2021-02-24 04:46:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:17,616 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:17,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:17,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:17,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:17,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:17,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,809 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 04:46:17,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506980897] [2021-02-24 04:46:17,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:17,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:17,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405251207] [2021-02-24 04:46:17,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:17,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:17,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:17,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:17,813 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 5 states. [2021-02-24 04:46:18,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:18,085 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-02-24 04:46:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:18,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2021-02-24 04:46:18,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:18,092 INFO L225 Difference]: With dead ends: 86 [2021-02-24 04:46:18,092 INFO L226 Difference]: Without dead ends: 61 [2021-02-24 04:46:18,094 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 04:46:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-24 04:46:18,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-02-24 04:46:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-24 04:46:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-02-24 04:46:18,118 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 35 [2021-02-24 04:46:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:18,118 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-02-24 04:46:18,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:18,119 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-02-24 04:46:18,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 04:46:18,120 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:18,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:18,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:18,121 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:18,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:18,122 INFO L82 PathProgramCache]: Analyzing trace with hash 2023038414, now seen corresponding path program 1 times [2021-02-24 04:46:18,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:18,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873993627] [2021-02-24 04:46:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:18,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:18,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:18,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:18,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:18,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:18,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:18,214 WARN L141 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-02-24 04:46:18,226 WARN L147 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size 19 [2021-02-24 04:46:18,231 WARN L141 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-02-24 04:46:18,238 WARN L147 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size 11 [2021-02-24 04:46:18,240 WARN L141 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size [2021-02-24 04:46:18,241 WARN L147 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size 3 [2021-02-24 04:46:18,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:18,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:46:18,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:18,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:46:18,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:18,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:18,250 WARN L141 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-02-24 04:46:18,252 WARN L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-02-24 04:46:18,252 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:46:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:18,291 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:18,324 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:18,367 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:46:18,368 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:18,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:18,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:18 BoogieIcfgContainer [2021-02-24 04:46:18,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:18,387 INFO L168 Benchmark]: Toolchain (without parser) took 2716.59 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 128.3 MB in the beginning and 117.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:18,388 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:18,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.29 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 117.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:18,391 INFO L168 Benchmark]: Boogie Preprocessor took 40.76 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:18,392 INFO L168 Benchmark]: RCFGBuilder took 757.98 ms. Allocated memory is still 152.0 MB. Free memory was 115.4 MB in the beginning and 131.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:18,393 INFO L168 Benchmark]: TraceAbstraction took 1661.00 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 131.6 MB in the beginning and 117.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:18,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 235.29 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 117.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.76 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 757.98 ms. Allocated memory is still 152.0 MB. Free memory was 115.4 MB in the beginning and 131.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1661.00 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 131.6 MB in the beginning and 117.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i