/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/res2of.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:45:14,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:45:14,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:45:14,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:45:14,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:45:14,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:45:14,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:45:14,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:45:14,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:45:14,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:45:14,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:45:14,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:45:14,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:45:14,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:45:14,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:45:14,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:45:14,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:45:14,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:45:14,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:45:14,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:45:14,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:45:14,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:45:14,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:45:14,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:45:14,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:45:14,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 21:45:14,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 21:45:14,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 21:45:14,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 21:45:14,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 21:45:14,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 21:45:14,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 21:45:14,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 21:45:14,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:45:14,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:45:14,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:45:14,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:45:14,604 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:45:14,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:45:14,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:45:14,607 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:45:14,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:45:14,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:45:14,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:45:14,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:45:14,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:45:14,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:45:14,608 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:45:14,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:45:14,608 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:45:14,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:45:14,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:45:14,609 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:45:14,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:45:14,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:45:14,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:14,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:45:14,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:45:14,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:45:14,610 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:45:14,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:45:14,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:45:14,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:45:14,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:45:14,986 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:45:14,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2of.c [2020-10-23 21:45:15,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763e6a40d/d25ad21959aa4ac3b5370e5d7a9b1a87/FLAG2def2d3a6 [2020-10-23 21:45:15,712 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:45:15,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2of.c [2020-10-23 21:45:15,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763e6a40d/d25ad21959aa4ac3b5370e5d7a9b1a87/FLAG2def2d3a6 [2020-10-23 21:45:16,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763e6a40d/d25ad21959aa4ac3b5370e5d7a9b1a87 [2020-10-23 21:45:16,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:45:16,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:45:16,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:16,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:45:16,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:45:16,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:16" (1/1) ... [2020-10-23 21:45:16,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c6d850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:16, skipping insertion in model container [2020-10-23 21:45:16,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:16" (1/1) ... [2020-10-23 21:45:16,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:45:16,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:45:16,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:16,294 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:45:16,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:16,345 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:45:16,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:16 WrapperNode [2020-10-23 21:45:16,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:16,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:45:16,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:45:16,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:45:16,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:16" (1/1) ... [2020-10-23 21:45:16,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:16" (1/1) ... [2020-10-23 21:45:16,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:16" (1/1) ... [2020-10-23 21:45:16,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:16" (1/1) ... [2020-10-23 21:45:16,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:16" (1/1) ... [2020-10-23 21:45:16,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:16" (1/1) ... [2020-10-23 21:45:16,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:16" (1/1) ... [2020-10-23 21:45:16,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:45:16,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:45:16,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:45:16,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:45:16,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:16" (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 [2020-10-23 21:45:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:45:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:45:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:45:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:45:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:45:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:45:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:45:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:45:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:45:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:45:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:45:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:45:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:45:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:45:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:45:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:45:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:45:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:45:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:45:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:45:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:45:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:45:16,919 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:45:16,919 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 21:45:16,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:16 BoogieIcfgContainer [2020-10-23 21:45:16,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:45:16,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:45:16,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:45:16,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:45:16,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:45:16" (1/3) ... [2020-10-23 21:45:16,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2e3c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:16, skipping insertion in model container [2020-10-23 21:45:16,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:16" (2/3) ... [2020-10-23 21:45:16,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2e3c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:16, skipping insertion in model container [2020-10-23 21:45:16,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:16" (3/3) ... [2020-10-23 21:45:16,930 INFO L111 eAbstractionObserver]: Analyzing ICFG res2of.c [2020-10-23 21:45:16,942 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:45:16,947 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:45:16,962 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:45:16,987 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:45:16,987 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:45:16,987 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:45:16,987 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:45:16,987 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:45:16,987 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:45:16,988 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:45:16,988 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:45:17,005 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-10-23 21:45:17,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-23 21:45:17,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:17,018 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] [2020-10-23 21:45:17,018 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:17,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:17,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1636857064, now seen corresponding path program 1 times [2020-10-23 21:45:17,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:17,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177792458] [2020-10-23 21:45:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:17,122 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:17,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:17,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:45:17,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177792458] [2020-10-23 21:45:17,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:17,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:45:17,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880760044] [2020-10-23 21:45:17,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:45:17,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:17,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:45:17,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:17,382 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 3 states. [2020-10-23 21:45:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:17,655 INFO L93 Difference]: Finished difference Result 177 states and 205 transitions. [2020-10-23 21:45:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:45:17,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-10-23 21:45:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:17,667 INFO L225 Difference]: With dead ends: 177 [2020-10-23 21:45:17,667 INFO L226 Difference]: Without dead ends: 86 [2020-10-23 21:45:17,671 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 [2020-10-23 21:45:17,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-23 21:45:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-23 21:45:17,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-23 21:45:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-10-23 21:45:17,728 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 49 [2020-10-23 21:45:17,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:17,728 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-10-23 21:45:17,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:45:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-10-23 21:45:17,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-23 21:45:17,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:17,731 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] [2020-10-23 21:45:17,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:45:17,732 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:17,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:17,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1249492494, now seen corresponding path program 1 times [2020-10-23 21:45:17,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:17,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520425623] [2020-10-23 21:45:17,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:17,737 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:17,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:17,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:45:17,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520425623] [2020-10-23 21:45:17,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:17,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:45:17,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531960405] [2020-10-23 21:45:17,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:45:17,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:17,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:45:17,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:45:17,908 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 5 states. [2020-10-23 21:45:18,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:18,226 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2020-10-23 21:45:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:45:18,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-23 21:45:18,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:18,229 INFO L225 Difference]: With dead ends: 171 [2020-10-23 21:45:18,229 INFO L226 Difference]: Without dead ends: 122 [2020-10-23 21:45:18,231 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 [2020-10-23 21:45:18,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-23 21:45:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 92. [2020-10-23 21:45:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-23 21:45:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2020-10-23 21:45:18,252 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 49 [2020-10-23 21:45:18,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:18,253 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2020-10-23 21:45:18,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:45:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2020-10-23 21:45:18,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-23 21:45:18,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:18,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:18,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:45:18,257 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:18,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:18,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1860696321, now seen corresponding path program 1 times [2020-10-23 21:45:18,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:18,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285477624] [2020-10-23 21:45:18,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:18,447 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:45:18,449 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:18,569 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:18,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:18,717 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:45:18,719 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:45:18,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:45:18,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:45:18 BoogieIcfgContainer [2020-10-23 21:45:18,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:45:18,763 INFO L168 Benchmark]: Toolchain (without parser) took 2689.73 ms. Allocated memory was 161.5 MB in the beginning and 204.5 MB in the end (delta: 43.0 MB). Free memory was 137.6 MB in the beginning and 93.8 MB in the end (delta: 43.7 MB). Peak memory consumption was 88.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:18,765 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 161.5 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:18,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.44 ms. Allocated memory is still 161.5 MB. Free memory was 137.1 MB in the beginning and 126.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:18,769 INFO L168 Benchmark]: Boogie Preprocessor took 44.19 ms. Allocated memory is still 161.5 MB. Free memory was 126.8 MB in the beginning and 125.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:18,770 INFO L168 Benchmark]: RCFGBuilder took 529.40 ms. Allocated memory is still 161.5 MB. Free memory was 125.1 MB in the beginning and 134.3 MB in the end (delta: -9.2 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:18,771 INFO L168 Benchmark]: TraceAbstraction took 1832.31 ms. Allocated memory was 161.5 MB in the beginning and 204.5 MB in the end (delta: 43.0 MB). Free memory was 133.8 MB in the beginning and 93.8 MB in the end (delta: 39.9 MB). Peak memory consumption was 82.9 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:18,780 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 161.5 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.44 ms. Allocated memory is still 161.5 MB. Free memory was 137.1 MB in the beginning and 126.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.19 ms. Allocated memory is still 161.5 MB. Free memory was 126.8 MB in the beginning and 125.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 529.40 ms. Allocated memory is still 161.5 MB. Free memory was 125.1 MB in the beginning and 134.3 MB in the end (delta: -9.2 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1832.31 ms. Allocated memory was 161.5 MB in the beginning and 204.5 MB in the end (delta: 43.0 MB). Free memory was 133.8 MB in the beginning and 93.8 MB in the end (delta: 39.9 MB). Peak memory consumption was 82.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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); [L30] int *b = malloc(sizeof(int)*N); [L31] int *c = malloc(sizeof(int)*N); [L33] sum[0] = 0 [L34] i=0 [L34] COND TRUE i