/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/brs4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:13,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:13,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:13,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:13,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:13,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:13,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:13,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:13,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:13,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:13,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:13,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:13,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:13,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:13,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:13,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:13,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:13,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:13,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:13,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:13,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:13,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:13,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:13,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:13,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:46:13,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:13,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:13,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:13,941 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 04:46:13,964 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:13,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:13,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:13,969 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:13,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:13,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:13,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:13,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:13,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:13,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:13,975 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:13,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:13,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:13,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:13,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:13,976 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:13,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:13,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:13,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:13,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:13,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:13,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:13,978 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:13,979 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:14,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:14,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:14,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:14,444 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:14,450 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:14,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs4f.c [2021-02-24 04:46:14,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9127b7156/df00ef67f38d46d78f7da1f77f2530e5/FLAG4cf72d64d [2021-02-24 04:46:15,216 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:15,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs4f.c [2021-02-24 04:46:15,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9127b7156/df00ef67f38d46d78f7da1f77f2530e5/FLAG4cf72d64d [2021-02-24 04:46:15,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9127b7156/df00ef67f38d46d78f7da1f77f2530e5 [2021-02-24 04:46:15,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:15,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:15,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:15,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:15,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:15,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:15" (1/1) ... [2021-02-24 04:46:15,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464f12fc 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 04:46:15,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:15" (1/1) ... [2021-02-24 04:46:15,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:15,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:15,767 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/brs4f.c[588,601] [2021-02-24 04:46:15,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:15,795 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:15,810 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/brs4f.c[588,601] [2021-02-24 04:46:15,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:15,838 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:15,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:15 WrapperNode [2021-02-24 04:46:15,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:15,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:15,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:15,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:15,854 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 04:46:15,855 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 04:46:15,864 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 04:46:15,864 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 04:46:15,873 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 04:46:15,879 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 04:46:15,881 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 04:46:15,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:15,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:15,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:15,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:15,886 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 04:46:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:16,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:16,695 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:16,695 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 04:46:16,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:16 BoogieIcfgContainer [2021-02-24 04:46:16,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:16,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:16,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:16,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:16,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:15" (1/3) ... [2021-02-24 04:46:16,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2284b062 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 04:46:16,709 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 04:46:16,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2284b062 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 04:46:16,710 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 04:46:16,711 INFO L111 eAbstractionObserver]: Analyzing ICFG brs4f.c [2021-02-24 04:46:16,719 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:16,725 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:16,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:16,784 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:16,785 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:16,785 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:16,785 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:16,785 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:16,786 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:16,786 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:16,786 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 04:46:16,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 04:46:16,824 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:16,825 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 04:46:16,826 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:16,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:16,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1589495831, now seen corresponding path program 1 times [2021-02-24 04:46:16,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:16,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074252358] [2021-02-24 04:46:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:16,940 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:17,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:17,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:17,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,226 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 04:46:17,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074252358] [2021-02-24 04:46:17,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:17,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:17,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932430874] [2021-02-24 04:46:17,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:17,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:17,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:17,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:17,252 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2021-02-24 04:46:17,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:17,473 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-02-24 04:46:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:17,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-02-24 04:46:17,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:17,483 INFO L225 Difference]: With dead ends: 107 [2021-02-24 04:46:17,484 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 04:46:17,487 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 04:46:17,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 04:46:17,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-02-24 04:46:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-24 04:46:17,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-02-24 04:46:17,536 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 35 [2021-02-24 04:46:17,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:17,537 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-02-24 04:46:17,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:17,537 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-02-24 04:46:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 04:46:17,539 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:17,539 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 04:46:17,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:17,540 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:17,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:17,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1961847080, now seen corresponding path program 1 times [2021-02-24 04:46:17,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:17,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893221656] [2021-02-24 04:46:17,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:17,544 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:17,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:17,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:17,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:17,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:17,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,701 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 04:46:17,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893221656] [2021-02-24 04:46:17,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:17,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:17,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128911862] [2021-02-24 04:46:17,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:17,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:17,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:17,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:17,705 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 5 states. [2021-02-24 04:46:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:18,001 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-02-24 04:46:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:18,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2021-02-24 04:46:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:18,004 INFO L225 Difference]: With dead ends: 86 [2021-02-24 04:46:18,004 INFO L226 Difference]: Without dead ends: 61 [2021-02-24 04:46:18,006 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 04:46:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-24 04:46:18,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-02-24 04:46:18,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-24 04:46:18,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-02-24 04:46:18,029 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 35 [2021-02-24 04:46:18,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:18,030 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-02-24 04:46:18,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-02-24 04:46:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 04:46:18,035 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:18,035 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 04:46:18,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:18,036 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:18,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:18,037 INFO L82 PathProgramCache]: Analyzing trace with hash 2023038414, now seen corresponding path program 1 times [2021-02-24 04:46:18,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:18,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035718443] [2021-02-24 04:46:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:18,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:18,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:18,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:18,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:18,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:18,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:18,132 WARN L141 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-02-24 04:46:18,144 WARN L147 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size 19 [2021-02-24 04:46:18,149 WARN L141 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-02-24 04:46:18,156 WARN L147 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size 11 [2021-02-24 04:46:18,159 WARN L141 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size [2021-02-24 04:46:18,160 WARN L147 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size 3 [2021-02-24 04:46:18,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:18,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:46:18,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:18,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:46:18,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:18,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:18,170 WARN L141 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-02-24 04:46:18,172 WARN L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-02-24 04:46:18,172 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:46:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:18,211 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:18,241 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:18,298 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:46:18,299 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:18,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:18,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:18 BoogieIcfgContainer [2021-02-24 04:46:18,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:18,327 INFO L168 Benchmark]: Toolchain (without parser) took 2750.82 ms. Allocated memory is still 156.2 MB. Free memory was 133.0 MB in the beginning and 98.5 MB in the end (delta: 34.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:18,330 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 156.2 MB. Free memory was 130.7 MB in the beginning and 130.6 MB in the end (delta: 120.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:18,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.45 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 121.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:18,333 INFO L168 Benchmark]: Boogie Preprocessor took 43.89 ms. Allocated memory is still 156.2 MB. Free memory was 121.5 MB in the beginning and 119.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:18,338 INFO L168 Benchmark]: RCFGBuilder took 814.08 ms. Allocated memory is still 156.2 MB. Free memory was 119.9 MB in the beginning and 133.3 MB in the end (delta: -13.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:18,339 INFO L168 Benchmark]: TraceAbstraction took 1621.79 ms. Allocated memory is still 156.2 MB. Free memory was 132.8 MB in the beginning and 98.5 MB in the end (delta: 34.3 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:18,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 156.2 MB. Free memory was 130.7 MB in the beginning and 130.6 MB in the end (delta: 120.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.45 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 121.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.89 ms. Allocated memory is still 156.2 MB. Free memory was 121.5 MB in the beginning and 119.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 814.08 ms. Allocated memory is still 156.2 MB. Free memory was 119.9 MB in the beginning and 133.3 MB in the end (delta: -13.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1621.79 ms. Allocated memory is still 156.2 MB. Free memory was 132.8 MB in the beginning and 98.5 MB in the end (delta: 34.3 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i