/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/ms2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:25,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:25,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:25,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:25,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:25,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:25,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:25,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:25,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:25,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:25,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:25,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:25,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:25,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:25,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:25,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:25,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:25,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:25,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:25,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:25,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:25,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:25,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:25,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:25,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:56:25,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:25,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:25,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:25,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:25,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:25,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:25,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:25,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:25,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:25,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:25,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:25,731 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 01:56:25,754 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:25,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:25,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:25,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:25,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:25,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:25,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:25,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:25,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:25,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:25,761 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:25,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:25,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:25,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:25,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:25,763 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:25,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:25,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:25,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:25,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:25,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:25,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:25,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:26,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:26,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:26,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:26,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:26,255 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:26,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms2f.c [2020-11-07 01:56:26,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18e7d6023/647e7632f0ac438ea3126ab3ed9cab9d/FLAG5dfa689aa [2020-11-07 01:56:27,035 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:27,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms2f.c [2020-11-07 01:56:27,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18e7d6023/647e7632f0ac438ea3126ab3ed9cab9d/FLAG5dfa689aa [2020-11-07 01:56:27,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18e7d6023/647e7632f0ac438ea3126ab3ed9cab9d [2020-11-07 01:56:27,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:27,417 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:27,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:27,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:27,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:27,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:27" (1/1) ... [2020-11-07 01:56:27,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7d855e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:27, skipping insertion in model container [2020-11-07 01:56:27,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:27" (1/1) ... [2020-11-07 01:56:27,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:27,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:27,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:27,737 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:27,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:27,777 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:27,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:27 WrapperNode [2020-11-07 01:56:27,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:27,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:27,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:27,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:27,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:27" (1/1) ... [2020-11-07 01:56:27,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:27" (1/1) ... [2020-11-07 01:56:27,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:27" (1/1) ... [2020-11-07 01:56:27,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:27" (1/1) ... [2020-11-07 01:56:27,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:27" (1/1) ... [2020-11-07 01:56:27,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:27" (1/1) ... [2020-11-07 01:56:27,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:27" (1/1) ... [2020-11-07 01:56:27,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:27,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:27,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:27,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:27,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:27" (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 01:56:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:27,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:27,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:28,309 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:28,309 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-07 01:56:28,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:28 BoogieIcfgContainer [2020-11-07 01:56:28,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:28,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:28,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:28,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:28,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:27" (1/3) ... [2020-11-07 01:56:28,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78464b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:28, skipping insertion in model container [2020-11-07 01:56:28,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:27" (2/3) ... [2020-11-07 01:56:28,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78464b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:28, skipping insertion in model container [2020-11-07 01:56:28,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:28" (3/3) ... [2020-11-07 01:56:28,321 INFO L111 eAbstractionObserver]: Analyzing ICFG ms2f.c [2020-11-07 01:56:28,337 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:28,341 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:28,354 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:28,380 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:28,380 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:28,380 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:28,381 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:28,381 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:28,381 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:28,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:28,381 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:28,400 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-11-07 01:56:28,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 01:56:28,410 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:28,411 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] [2020-11-07 01:56:28,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:28,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:28,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1978426860, now seen corresponding path program 1 times [2020-11-07 01:56:28,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:28,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689424499] [2020-11-07 01:56:28,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:28,510 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:28,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:28,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-07 01:56:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:28,793 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 01:56:28,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689424499] [2020-11-07 01:56:28,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:28,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:28,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610694299] [2020-11-07 01:56:28,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:28,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:28,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:28,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:28,831 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-11-07 01:56:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:29,051 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2020-11-07 01:56:29,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:29,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-11-07 01:56:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:29,062 INFO L225 Difference]: With dead ends: 114 [2020-11-07 01:56:29,062 INFO L226 Difference]: Without dead ends: 58 [2020-11-07 01:56:29,066 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 01:56:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-07 01:56:29,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-11-07 01:56:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-07 01:56:29,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-11-07 01:56:29,124 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 43 [2020-11-07 01:56:29,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:29,125 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-11-07 01:56:29,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-11-07 01:56:29,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 01:56:29,127 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:29,128 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] [2020-11-07 01:56:29,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:29,128 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:29,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:29,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1403761419, now seen corresponding path program 1 times [2020-11-07 01:56:29,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:29,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329572133] [2020-11-07 01:56:29,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:29,134 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:29,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:29,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-07 01:56:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:29,324 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 01:56:29,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329572133] [2020-11-07 01:56:29,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:29,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:56:29,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144416939] [2020-11-07 01:56:29,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:56:29,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:29,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:56:29,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:56:29,329 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2020-11-07 01:56:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:29,613 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2020-11-07 01:56:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:56:29,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-11-07 01:56:29,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:29,617 INFO L225 Difference]: With dead ends: 85 [2020-11-07 01:56:29,618 INFO L226 Difference]: Without dead ends: 66 [2020-11-07 01:56:29,619 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 01:56:29,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-07 01:56:29,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2020-11-07 01:56:29,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-07 01:56:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-11-07 01:56:29,634 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 43 [2020-11-07 01:56:29,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:29,634 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-11-07 01:56:29,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:56:29,635 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-11-07 01:56:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-07 01:56:29,636 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:29,637 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] [2020-11-07 01:56:29,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:29,637 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:29,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:29,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1589882434, now seen corresponding path program 1 times [2020-11-07 01:56:29,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:29,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133279421] [2020-11-07 01:56:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:32,899 WARN L194 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-07 01:56:32,909 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:56:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:32,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:33,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:33,113 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:56:33,113 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:33,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:56:33,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:33 BoogieIcfgContainer [2020-11-07 01:56:33,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:33,145 INFO L168 Benchmark]: Toolchain (without parser) took 5734.13 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 100.9 MB in the end (delta: 26.4 MB). Peak memory consumption was 27.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:33,146 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.4 MB in the end (delta: 82.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:33,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.01 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:33,148 INFO L168 Benchmark]: Boogie Preprocessor took 42.94 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:33,149 INFO L168 Benchmark]: RCFGBuilder took 488.17 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 131.9 MB in the end (delta: -16.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:33,150 INFO L168 Benchmark]: TraceAbstraction took 4829.95 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 100.9 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:33,154 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.4 MB in the end (delta: 82.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 355.01 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.94 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 488.17 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 131.9 MB in the end (delta: -16.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4829.95 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 100.9 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 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] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i N) [L15] COND TRUE !(cond) [L15] CALL reach_error() [L10] __assert_fail("0", "ms2f.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 62 SDslu, 37 SDs, 0 SdLazy, 135 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...