/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/s2liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:41,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:41,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:41,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 01:56:41,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:41,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:41,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:41,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:41,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:41,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:41,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:41,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:41,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:41,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:41,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:41,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:41,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:56:41,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:41,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:41,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:41,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:41,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:41,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:41,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:41,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:41,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:41,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:41,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:41,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 01:56:41,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:41,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:41,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:41,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:41,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:41,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:41,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:41,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:41,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:41,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:41,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:41,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:41,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:41,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:41,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:41,716 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:41,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:41,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:41,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:41,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:41,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:41,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:41,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:42,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:42,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:42,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:42,128 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:42,129 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:42,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2liff.c [2020-11-07 01:56:42,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06f9d9518/c1c76cb94c9148608ca580c14fd89ae2/FLAG300c5f741 [2020-11-07 01:56:42,892 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:42,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s2liff.c [2020-11-07 01:56:42,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06f9d9518/c1c76cb94c9148608ca580c14fd89ae2/FLAG300c5f741 [2020-11-07 01:56:43,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06f9d9518/c1c76cb94c9148608ca580c14fd89ae2 [2020-11-07 01:56:43,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:43,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:43,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:43,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:43,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:43,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:43" (1/1) ... [2020-11-07 01:56:43,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@259d797e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:43, skipping insertion in model container [2020-11-07 01:56:43,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:43" (1/1) ... [2020-11-07 01:56:43,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:43,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:43,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:43,594 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:43,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:43,634 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:43,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:43 WrapperNode [2020-11-07 01:56:43,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:43,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:43,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:43,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:43,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:43" (1/1) ... [2020-11-07 01:56:43,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:43" (1/1) ... [2020-11-07 01:56:43,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:43" (1/1) ... [2020-11-07 01:56:43,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:43" (1/1) ... [2020-11-07 01:56:43,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:43" (1/1) ... [2020-11-07 01:56:43,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:43" (1/1) ... [2020-11-07 01:56:43,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:43" (1/1) ... [2020-11-07 01:56:43,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:43,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:43,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:43,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:43,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:43" (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 [2020-11-07 01:56:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:44,252 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:44,253 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-07 01:56:44,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:44 BoogieIcfgContainer [2020-11-07 01:56:44,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:44,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:44,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:44,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:44,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:43" (1/3) ... [2020-11-07 01:56:44,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3d0c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:44, skipping insertion in model container [2020-11-07 01:56:44,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:43" (2/3) ... [2020-11-07 01:56:44,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3d0c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:44, skipping insertion in model container [2020-11-07 01:56:44,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:44" (3/3) ... [2020-11-07 01:56:44,267 INFO L111 eAbstractionObserver]: Analyzing ICFG s2liff.c [2020-11-07 01:56:44,286 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:44,290 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:44,317 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:44,363 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:44,364 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:44,365 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:44,365 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:44,365 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:44,365 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:44,365 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:44,365 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:44,403 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-11-07 01:56:44,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 01:56:44,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:44,423 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] [2020-11-07 01:56:44,423 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:44,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1165353355, now seen corresponding path program 1 times [2020-11-07 01:56:44,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:44,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513233069] [2020-11-07 01:56:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:44,576 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:44,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:44,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:56:44,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513233069] [2020-11-07 01:56:44,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:44,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:44,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308847930] [2020-11-07 01:56:44,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:44,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:44,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:44,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:44,953 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-11-07 01:56:45,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:45,285 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-11-07 01:56:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:45,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-11-07 01:56:45,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:45,298 INFO L225 Difference]: With dead ends: 135 [2020-11-07 01:56:45,298 INFO L226 Difference]: Without dead ends: 65 [2020-11-07 01:56:45,304 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 [2020-11-07 01:56:45,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-07 01:56:45,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-11-07 01:56:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-07 01:56:45,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2020-11-07 01:56:45,375 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 39 [2020-11-07 01:56:45,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:45,376 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2020-11-07 01:56:45,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:45,376 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-11-07 01:56:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 01:56:45,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:45,378 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] [2020-11-07 01:56:45,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:45,379 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:45,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:45,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1782259906, now seen corresponding path program 1 times [2020-11-07 01:56:45,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:45,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623973095] [2020-11-07 01:56:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:45,384 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:45,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:56:45,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623973095] [2020-11-07 01:56:45,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:45,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:56:45,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623808589] [2020-11-07 01:56:45,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:56:45,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:45,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:56:45,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:56:45,537 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 5 states. [2020-11-07 01:56:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:45,792 INFO L93 Difference]: Finished difference Result 122 states and 131 transitions. [2020-11-07 01:56:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:56:45,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-07 01:56:45,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:45,795 INFO L225 Difference]: With dead ends: 122 [2020-11-07 01:56:45,795 INFO L226 Difference]: Without dead ends: 90 [2020-11-07 01:56:45,797 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 [2020-11-07 01:56:45,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-07 01:56:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68. [2020-11-07 01:56:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-07 01:56:45,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-11-07 01:56:45,813 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 39 [2020-11-07 01:56:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:45,816 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-11-07 01:56:45,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:56:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-11-07 01:56:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-07 01:56:45,819 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:45,819 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] [2020-11-07 01:56:45,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:45,819 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:45,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:45,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1725322241, now seen corresponding path program 1 times [2020-11-07 01:56:45,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:45,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713646719] [2020-11-07 01:56:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:45,915 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:45,923 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:46,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:46,061 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:46,131 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:56:46,132 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:46,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:56:46,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:46 BoogieIcfgContainer [2020-11-07 01:56:46,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:46,157 INFO L168 Benchmark]: Toolchain (without parser) took 2884.67 ms. Allocated memory is still 163.6 MB. Free memory was 140.1 MB in the beginning and 75.7 MB in the end (delta: 64.5 MB). Peak memory consumption was 65.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:46,158 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 139.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:46,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.26 ms. Allocated memory is still 163.6 MB. Free memory was 139.8 MB in the beginning and 129.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:46,160 INFO L168 Benchmark]: Boogie Preprocessor took 49.52 ms. Allocated memory is still 163.6 MB. Free memory was 129.6 MB in the beginning and 128.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:46,161 INFO L168 Benchmark]: RCFGBuilder took 569.07 ms. Allocated memory is still 163.6 MB. Free memory was 127.9 MB in the beginning and 108.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:46,162 INFO L168 Benchmark]: TraceAbstraction took 1896.75 ms. Allocated memory is still 163.6 MB. Free memory was 107.3 MB in the beginning and 75.7 MB in the end (delta: 31.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:46,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 139.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 354.26 ms. Allocated memory is still 163.6 MB. Free memory was 139.8 MB in the beginning and 129.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.52 ms. Allocated memory is still 163.6 MB. Free memory was 129.6 MB in the beginning and 128.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 569.07 ms. Allocated memory is still 163.6 MB. Free memory was 127.9 MB in the beginning and 108.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1896.75 ms. Allocated memory is still 163.6 MB. Free memory was 107.3 MB in the beginning and 75.7 MB in the end (delta: 31.6 MB). Peak memory consumption was 32.9 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); [L31] sum[0] = N [L32] i=0 [L32] COND TRUE i