/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:16:08,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:16:08,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:16:08,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:16:08,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:16:08,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:16:08,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:16:08,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:16:08,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:16:08,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:16:08,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:16:08,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:16:08,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:16:08,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:16:08,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:16:08,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:16:08,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:16:08,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:16:08,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:16:08,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:16:08,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:16:08,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:16:08,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:16:08,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:16:08,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:16:08,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:16:08,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:16:08,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:16:08,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:16:08,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:16:08,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:16:08,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:16:08,510 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:16:08,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:16:08,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:16:08,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:16:08,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:16:08,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:16:08,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:16:08,511 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:16:08,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:16:08,512 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:16:08,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:16:08,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:16:08,512 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:16:08,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:16:08,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:16:08,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:08,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:16:08,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:16:08,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:16:08,514 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:16:08,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:16:08,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:16:08,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:16:08,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:16:08,910 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:16:08,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2021-02-21 21:16:08,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ab198cf/b268791255774556aa88139cbad7ee40/FLAGce57645e1 [2021-02-21 21:16:09,630 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:16:09,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs1f.c [2021-02-21 21:16:09,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ab198cf/b268791255774556aa88139cbad7ee40/FLAGce57645e1 [2021-02-21 21:16:10,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ab198cf/b268791255774556aa88139cbad7ee40 [2021-02-21 21:16:10,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:16:10,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:16:10,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:10,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:16:10,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:16:10,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:10" (1/1) ... [2021-02-21 21:16:10,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdccdc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:10, skipping insertion in model container [2021-02-21 21:16:10,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:10" (1/1) ... [2021-02-21 21:16:10,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:16:10,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:16:10,217 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/brs1f.c[588,601] [2021-02-21 21:16:10,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:10,255 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:16:10,272 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/brs1f.c[588,601] [2021-02-21 21:16:10,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:10,321 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:16:10,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:10 WrapperNode [2021-02-21 21:16:10,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:10,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:16:10,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:16:10,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:16:10,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:10" (1/1) ... [2021-02-21 21:16:10,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:10" (1/1) ... [2021-02-21 21:16:10,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:10" (1/1) ... [2021-02-21 21:16:10,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:10" (1/1) ... [2021-02-21 21:16:10,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:10" (1/1) ... [2021-02-21 21:16:10,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:10" (1/1) ... [2021-02-21 21:16:10,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:10" (1/1) ... [2021-02-21 21:16:10,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:16:10,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:16:10,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:16:10,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:16:10,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:10,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:16:10,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:16:10,501 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:16:10,502 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:16:10,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:16:10,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:16:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:16:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:16:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:16:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:16:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:16:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:16:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:16:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:16:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:16:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:16:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:16:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:16:10,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:16:10,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:16:10,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:16:10,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:16:11,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:16:11,011 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 21:16:11,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:11 BoogieIcfgContainer [2021-02-21 21:16:11,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:16:11,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:16:11,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:16:11,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:16:11,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:16:10" (1/3) ... [2021-02-21 21:16:11,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624e594d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:11, skipping insertion in model container [2021-02-21 21:16:11,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:10" (2/3) ... [2021-02-21 21:16:11,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624e594d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:11, skipping insertion in model container [2021-02-21 21:16:11,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:11" (3/3) ... [2021-02-21 21:16:11,028 INFO L111 eAbstractionObserver]: Analyzing ICFG brs1f.c [2021-02-21 21:16:11,039 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:16:11,044 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:16:11,065 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:16:11,104 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:16:11,104 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:16:11,105 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:16:11,105 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:16:11,105 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:16:11,105 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:16:11,105 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:16:11,105 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:16:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2021-02-21 21:16:11,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-21 21:16:11,153 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:11,154 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] [2021-02-21 21:16:11,155 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:11,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1589495831, now seen corresponding path program 1 times [2021-02-21 21:16:11,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:11,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179049773] [2021-02-21 21:16:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:11,278 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:11,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:11,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:11,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:11,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:11,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:11,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:11,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179049773] [2021-02-21 21:16:11,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:11,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:16:11,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420834769] [2021-02-21 21:16:11,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:16:11,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:11,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:16:11,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:11,607 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2021-02-21 21:16:11,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:11,818 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2021-02-21 21:16:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:16:11,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-02-21 21:16:11,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:11,831 INFO L225 Difference]: With dead ends: 106 [2021-02-21 21:16:11,831 INFO L226 Difference]: Without dead ends: 51 [2021-02-21 21:16:11,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:11,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-21 21:16:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-21 21:16:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-21 21:16:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-02-21 21:16:11,890 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 35 [2021-02-21 21:16:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:11,890 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-02-21 21:16:11,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:16:11,891 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2021-02-21 21:16:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-21 21:16:11,892 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:11,893 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] [2021-02-21 21:16:11,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:16:11,893 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:11,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:11,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1961847080, now seen corresponding path program 1 times [2021-02-21 21:16:11,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:11,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727825539] [2021-02-21 21:16:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:11,899 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:11,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:11,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:11,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:12,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:12,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:12,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:12,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:12,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:12,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:12,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:12,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:12,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:12,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727825539] [2021-02-21 21:16:12,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:12,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:12,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096081379] [2021-02-21 21:16:12,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:12,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:12,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:12,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:12,132 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2021-02-21 21:16:12,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:12,386 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2021-02-21 21:16:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:12,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2021-02-21 21:16:12,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:12,405 INFO L225 Difference]: With dead ends: 78 [2021-02-21 21:16:12,405 INFO L226 Difference]: Without dead ends: 60 [2021-02-21 21:16:12,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:16:12,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-02-21 21:16:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-02-21 21:16:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-02-21 21:16:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-02-21 21:16:12,444 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 35 [2021-02-21 21:16:12,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:12,445 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-02-21 21:16:12,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:12,447 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-02-21 21:16:12,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-21 21:16:12,449 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:12,449 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] [2021-02-21 21:16:12,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:16:12,449 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:12,452 INFO L82 PathProgramCache]: Analyzing trace with hash 2023038414, now seen corresponding path program 1 times [2021-02-21 21:16:12,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:12,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809739658] [2021-02-21 21:16:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:12,506 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:12,508 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:12,569 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:12,606 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:12,644 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:16:12,645 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:16:12,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:16:12,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:16:12 BoogieIcfgContainer [2021-02-21 21:16:12,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:16:12,667 INFO L168 Benchmark]: Toolchain (without parser) took 2653.43 ms. Allocated memory was 176.2 MB in the beginning and 237.0 MB in the end (delta: 60.8 MB). Free memory was 152.9 MB in the beginning and 206.1 MB in the end (delta: -53.2 MB). Peak memory consumption was 8.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:12,669 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 176.2 MB. Free memory is still 148.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:16:12,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.95 ms. Allocated memory is still 176.2 MB. Free memory was 151.9 MB in the beginning and 141.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:12,671 INFO L168 Benchmark]: Boogie Preprocessor took 63.88 ms. Allocated memory is still 176.2 MB. Free memory was 141.5 MB in the beginning and 139.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:12,672 INFO L168 Benchmark]: RCFGBuilder took 627.41 ms. Allocated memory is still 176.2 MB. Free memory was 139.7 MB in the beginning and 156.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:12,673 INFO L168 Benchmark]: TraceAbstraction took 1647.40 ms. Allocated memory was 176.2 MB in the beginning and 237.0 MB in the end (delta: 60.8 MB). Free memory was 156.7 MB in the beginning and 206.1 MB in the end (delta: -49.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:12,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 176.2 MB. Free memory is still 148.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 296.95 ms. Allocated memory is still 176.2 MB. Free memory was 151.9 MB in the beginning and 141.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.88 ms. Allocated memory is still 176.2 MB. Free memory was 141.5 MB in the beginning and 139.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 627.41 ms. Allocated memory is still 176.2 MB. Free memory was 139.7 MB in the beginning and 156.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1647.40 ms. Allocated memory was 176.2 MB in the beginning and 237.0 MB in the end (delta: 60.8 MB). Free memory was 156.7 MB in the beginning and 206.1 MB in the end (delta: -49.4 MB). Peak memory consumption was 10.9 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