/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/ms3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:09,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:09,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:09,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:20:09,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:20:09,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:20:09,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:20:09,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:20:09,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:20:09,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:20:09,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:20:09,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:20:09,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:09,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:09,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:09,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:09,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:09,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:09,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:09,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:09,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:09,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:09,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:09,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:09,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:20:09,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:20:09,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:20:09,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:20:09,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:20:09,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:09,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:09,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:09,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:09,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:09,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:09,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:09,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:09,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:09,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:09,532 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:09,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:09,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:09,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:09,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:09,533 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:09,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:09,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:09,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:09,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:09,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:09,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:09,535 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:09,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:20:09,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:20:09,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:20:09,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:20:09,911 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:20:09,912 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:20:09,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms3f.c [2021-02-22 02:20:09,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6a14216/20c140ef0c514410b5cae3c44e767c22/FLAG75b1f044e [2021-02-22 02:20:10,566 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:20:10,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms3f.c [2021-02-22 02:20:10,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6a14216/20c140ef0c514410b5cae3c44e767c22/FLAG75b1f044e [2021-02-22 02:20:10,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6a14216/20c140ef0c514410b5cae3c44e767c22 [2021-02-22 02:20:10,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:20:10,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:20:10,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:10,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:20:10,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:20:10,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:10" (1/1) ... [2021-02-22 02:20:10,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ecad388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:10, skipping insertion in model container [2021-02-22 02:20:10,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:10" (1/1) ... [2021-02-22 02:20:10,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:20:10,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:20:11,144 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/ms3f.c[587,600] [2021-02-22 02:20:11,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:11,179 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:20:11,198 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/ms3f.c[587,600] [2021-02-22 02:20:11,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:11,238 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:20:11,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:11 WrapperNode [2021-02-22 02:20:11,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:11,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:20:11,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:20:11,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:20:11,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:11" (1/1) ... [2021-02-22 02:20:11,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:11" (1/1) ... [2021-02-22 02:20:11,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:11" (1/1) ... [2021-02-22 02:20:11,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:11" (1/1) ... [2021-02-22 02:20:11,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:11" (1/1) ... [2021-02-22 02:20:11,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:11" (1/1) ... [2021-02-22 02:20:11,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:11" (1/1) ... [2021-02-22 02:20:11,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:20:11,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:20:11,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:20:11,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:20:11,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:11" (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 [2021-02-22 02:20:11,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:20:11,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:20:11,388 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:20:11,388 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:20:11,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:20:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:20:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:20:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:20:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:20:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:20:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:20:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:20:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:20:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:20:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:20:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:20:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:20:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:20:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:20:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:20:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:20:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:20:11,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:20:11,844 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-22 02:20:11,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:11 BoogieIcfgContainer [2021-02-22 02:20:11,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:20:11,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:20:11,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:20:11,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:20:11,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:20:10" (1/3) ... [2021-02-22 02:20:11,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c37eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:11, skipping insertion in model container [2021-02-22 02:20:11,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:11" (2/3) ... [2021-02-22 02:20:11,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c37eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:11, skipping insertion in model container [2021-02-22 02:20:11,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:11" (3/3) ... [2021-02-22 02:20:11,865 INFO L111 eAbstractionObserver]: Analyzing ICFG ms3f.c [2021-02-22 02:20:11,873 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:20:11,878 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:20:11,899 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:20:11,928 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:20:11,928 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:20:11,928 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:20:11,928 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:20:11,929 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:20:11,929 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:20:11,929 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:20:11,929 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:20:11,965 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2021-02-22 02:20:11,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-22 02:20:11,987 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:11,988 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] [2021-02-22 02:20:11,989 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:12,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:12,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1183518233, now seen corresponding path program 1 times [2021-02-22 02:20:12,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:12,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622860998] [2021-02-22 02:20:12,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:12,102 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:12,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:12,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:12,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:12,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:12,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:12,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:12,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-22 02:20:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:12,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:12,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:12,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622860998] [2021-02-22 02:20:12,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:12,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:20:12,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387424646] [2021-02-22 02:20:12,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:20:12,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:12,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:20:12,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:12,485 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2021-02-22 02:20:12,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:12,676 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2021-02-22 02:20:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:20:12,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-22 02:20:12,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:12,686 INFO L225 Difference]: With dead ends: 110 [2021-02-22 02:20:12,687 INFO L226 Difference]: Without dead ends: 57 [2021-02-22 02:20:12,691 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 [2021-02-22 02:20:12,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-22 02:20:12,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-22 02:20:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-22 02:20:12,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-02-22 02:20:12,741 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 42 [2021-02-22 02:20:12,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:12,742 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-02-22 02:20:12,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:20:12,743 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-02-22 02:20:12,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-22 02:20:12,745 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:12,745 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] [2021-02-22 02:20:12,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:20:12,746 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:12,747 INFO L82 PathProgramCache]: Analyzing trace with hash -232895933, now seen corresponding path program 1 times [2021-02-22 02:20:12,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:12,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561538121] [2021-02-22 02:20:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:12,751 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:12,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:12,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:12,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:12,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:20:12,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:12,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:20:12,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:12,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:12,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:12,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:12,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:12,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-22 02:20:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:12,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:12,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:12,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561538121] [2021-02-22 02:20:12,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:12,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:20:12,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690773580] [2021-02-22 02:20:12,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:20:12,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:12,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:20:12,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:20:12,934 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2021-02-22 02:20:13,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:13,127 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2021-02-22 02:20:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:20:13,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-22 02:20:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:13,130 INFO L225 Difference]: With dead ends: 83 [2021-02-22 02:20:13,130 INFO L226 Difference]: Without dead ends: 65 [2021-02-22 02:20:13,131 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 [2021-02-22 02:20:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-22 02:20:13,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2021-02-22 02:20:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-22 02:20:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-22 02:20:13,147 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 42 [2021-02-22 02:20:13,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:13,147 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-22 02:20:13,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:20:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-22 02:20:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-22 02:20:13,149 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:13,150 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] [2021-02-22 02:20:13,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:20:13,150 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:13,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:13,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1631302411, now seen corresponding path program 1 times [2021-02-22 02:20:13,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:13,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506426414] [2021-02-22 02:20:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:13,216 WARN L141 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-02-22 02:20:13,241 WARN L147 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size 11 [2021-02-22 02:20:13,245 WARN L141 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size [2021-02-22 02:20:13,246 WARN L147 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size 3 [2021-02-22 02:20:13,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:13,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-22 02:20:13,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:13,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-22 02:20:13,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:13,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:13,256 WARN L141 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-02-22 02:20:13,257 WARN L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-02-22 02:20:13,258 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 02:20:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:13,295 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:13,339 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:13,393 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:20:13,394 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:20:13,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:20:13,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:20:13 BoogieIcfgContainer [2021-02-22 02:20:13,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:20:13,422 INFO L168 Benchmark]: Toolchain (without parser) took 2467.21 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 128.0 MB in the beginning and 118.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:13,425 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:13,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.62 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 116.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:13,428 INFO L168 Benchmark]: Boogie Preprocessor took 38.64 ms. Allocated memory is still 152.0 MB. Free memory was 116.9 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:13,434 INFO L168 Benchmark]: RCFGBuilder took 570.00 ms. Allocated memory is still 152.0 MB. Free memory was 115.2 MB in the beginning and 131.9 MB in the end (delta: -16.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:13,435 INFO L168 Benchmark]: TraceAbstraction took 1562.20 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 131.5 MB in the beginning and 118.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 44.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:13,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.62 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 116.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.64 ms. Allocated memory is still 152.0 MB. Free memory was 116.9 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 570.00 ms. Allocated memory is still 152.0 MB. Free memory was 115.2 MB in the beginning and 131.9 MB in the end (delta: -16.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1562.20 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 131.5 MB in the beginning and 118.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 44.6 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] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i 2*N) [L15] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 62 SDslu, 37 SDs, 0 SdLazy, 134 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...