/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/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:44:49,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:44:49,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:44:49,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:44:49,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:44:49,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:44:49,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:44:49,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:44:49,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:44:49,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:44:49,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:44:49,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:44:49,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:44:49,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:44:49,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:44:49,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:44:49,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:44:49,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:44:49,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:44:49,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:44:49,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:44:49,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:44:49,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:44:49,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:44:49,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:44:49,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 21:44:49,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 21:44:49,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 21:44:49,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 21:44:49,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 21:44:49,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 21:44:49,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 21:44:49,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 21:44:49,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:44:49,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:44:49,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:44:49,860 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 21:44:49,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:44:49,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:44:49,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:44:49,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:44:49,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:44:49,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:44:49,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:44:49,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:44:49,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:44:49,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:44:49,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:44:49,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:44:49,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:44:49,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:44:49,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:44:49,878 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:44:49,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:44:49,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:44:49,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:44:49,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:44:49,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:44:49,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:44:49,880 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:44:50,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:44:50,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:44:50,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:44:50,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:44:50,319 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:44:50,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2020-10-23 21:44:50,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d15356b/5ad6e58acf9244b6a68ff12be9efc634/FLAGbcf21db17 [2020-10-23 21:44:51,067 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:44:51,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condnf.c [2020-10-23 21:44:51,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d15356b/5ad6e58acf9244b6a68ff12be9efc634/FLAGbcf21db17 [2020-10-23 21:44:51,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d15356b/5ad6e58acf9244b6a68ff12be9efc634 [2020-10-23 21:44:51,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:44:51,388 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:44:51,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:44:51,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:44:51,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:44:51,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3811d8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51, skipping insertion in model container [2020-10-23 21:44:51,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:44:51,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:44:51,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:44:51,683 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:44:51,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:44:51,727 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:44:51,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51 WrapperNode [2020-10-23 21:44:51,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:44:51,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:44:51,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:44:51,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:44:51,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:44:51,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:44:51,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:44:51,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:44:51,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (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 21:44:51,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:44:51,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:44:51,933 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:44:51,933 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:44:51,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:44:51,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:44:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:44:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:44:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:44:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:44:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:44:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:44:51,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:44:51,935 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:44:51,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:44:51,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:44:51,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:44:51,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:44:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:44:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:44:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:44:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:44:52,415 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:44:52,415 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 21:44:52,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:44:52 BoogieIcfgContainer [2020-10-23 21:44:52,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:44:52,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:44:52,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:44:52,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:44:52,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:44:51" (1/3) ... [2020-10-23 21:44:52,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53927ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:44:52, skipping insertion in model container [2020-10-23 21:44:52,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (2/3) ... [2020-10-23 21:44:52,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53927ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:44:52, skipping insertion in model container [2020-10-23 21:44:52,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:44:52" (3/3) ... [2020-10-23 21:44:52,432 INFO L111 eAbstractionObserver]: Analyzing ICFG condnf.c [2020-10-23 21:44:52,447 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:44:52,453 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:44:52,469 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:44:52,509 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:44:52,509 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:44:52,509 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:44:52,509 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:44:52,510 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:44:52,510 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:44:52,510 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:44:52,510 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:44:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-10-23 21:44:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 21:44:52,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:52,545 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] [2020-10-23 21:44:52,545 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:52,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:52,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1069845025, now seen corresponding path program 1 times [2020-10-23 21:44:52,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:52,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754031395] [2020-10-23 21:44:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:52,635 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:52,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:44:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:52,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:44:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:52,971 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 21:44:52,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754031395] [2020-10-23 21:44:52,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:44:52,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:44:52,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803709019] [2020-10-23 21:44:52,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:44:52,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:44:53,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:44:53,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:44:53,010 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2020-10-23 21:44:53,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:44:53,327 INFO L93 Difference]: Finished difference Result 117 states and 135 transitions. [2020-10-23 21:44:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:44:53,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-23 21:44:53,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:44:53,339 INFO L225 Difference]: With dead ends: 117 [2020-10-23 21:44:53,339 INFO L226 Difference]: Without dead ends: 61 [2020-10-23 21:44:53,344 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 21:44:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-23 21:44:53,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-23 21:44:53,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-23 21:44:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-10-23 21:44:53,408 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 37 [2020-10-23 21:44:53,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:44:53,409 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-10-23 21:44:53,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:44:53,409 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-10-23 21:44:53,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 21:44:53,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:53,411 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] [2020-10-23 21:44:53,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:44:53,412 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:53,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:53,413 INFO L82 PathProgramCache]: Analyzing trace with hash -638526506, now seen corresponding path program 1 times [2020-10-23 21:44:53,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:53,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987804880] [2020-10-23 21:44:53,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:53,418 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:44:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:53,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:44:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:53,690 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 21:44:53,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987804880] [2020-10-23 21:44:53,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:44:53,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:44:53,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259334050] [2020-10-23 21:44:53,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:44:53,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:44:53,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:44:53,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:44:53,694 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 5 states. [2020-10-23 21:44:54,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:44:54,084 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2020-10-23 21:44:54,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:44:54,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-23 21:44:54,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:44:54,089 INFO L225 Difference]: With dead ends: 112 [2020-10-23 21:44:54,089 INFO L226 Difference]: Without dead ends: 84 [2020-10-23 21:44:54,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:44:54,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-23 21:44:54,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 63. [2020-10-23 21:44:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-23 21:44:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2020-10-23 21:44:54,115 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 37 [2020-10-23 21:44:54,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:44:54,119 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2020-10-23 21:44:54,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:44:54,119 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2020-10-23 21:44:54,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-23 21:44:54,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:54,121 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] [2020-10-23 21:44:54,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:44:54,122 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:54,124 INFO L82 PathProgramCache]: Analyzing trace with hash 958524627, now seen corresponding path program 1 times [2020-10-23 21:44:54,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:54,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012053092] [2020-10-23 21:44:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:54,277 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:44:54,286 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:44:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:54,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:44:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:54,796 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 21:44:54,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012053092] [2020-10-23 21:44:54,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:44:54,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 21:44:54,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157128267] [2020-10-23 21:44:54,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 21:44:54,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:44:54,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 21:44:54,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-23 21:44:54,800 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 11 states. [2020-10-23 21:44:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:44:55,779 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2020-10-23 21:44:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 21:44:55,780 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-23 21:44:55,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:44:55,783 INFO L225 Difference]: With dead ends: 118 [2020-10-23 21:44:55,783 INFO L226 Difference]: Without dead ends: 115 [2020-10-23 21:44:55,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-10-23 21:44:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-23 21:44:55,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 79. [2020-10-23 21:44:55,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-23 21:44:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-10-23 21:44:55,811 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 52 [2020-10-23 21:44:55,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:44:55,811 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-10-23 21:44:55,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 21:44:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-10-23 21:44:55,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-23 21:44:55,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:55,813 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] [2020-10-23 21:44:55,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:44:55,814 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:55,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:55,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1068131854, now seen corresponding path program 1 times [2020-10-23 21:44:55,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:55,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710045569] [2020-10-23 21:44:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:55,923 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:44:55,924 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:44:55,960 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:44:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:44:55,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:44:56,026 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:44:56,026 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:44:56,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 21:44:56,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:44:56 BoogieIcfgContainer [2020-10-23 21:44:56,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:44:56,055 INFO L168 Benchmark]: Toolchain (without parser) took 4667.00 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 138.1 MB in the beginning and 71.0 MB in the end (delta: 67.1 MB). Peak memory consumption was 98.6 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:56,057 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 128.6 MB in the end (delta: 74.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:44:56,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.12 ms. Allocated memory is still 154.1 MB. Free memory was 137.4 MB in the beginning and 127.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:56,062 INFO L168 Benchmark]: Boogie Preprocessor took 98.63 ms. Allocated memory is still 154.1 MB. Free memory was 127.9 MB in the beginning and 138.2 MB in the end (delta: -10.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:56,065 INFO L168 Benchmark]: RCFGBuilder took 586.36 ms. Allocated memory is still 154.1 MB. Free memory was 138.2 MB in the beginning and 119.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:56,068 INFO L168 Benchmark]: TraceAbstraction took 3626.05 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 119.3 MB in the beginning and 71.0 MB in the end (delta: 48.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:56,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 128.6 MB in the end (delta: 74.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 336.12 ms. Allocated memory is still 154.1 MB. Free memory was 137.4 MB in the beginning and 127.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 98.63 ms. Allocated memory is still 154.1 MB. Free memory was 127.9 MB in the beginning and 138.2 MB in the end (delta: -10.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 586.36 ms. Allocated memory is still 154.1 MB. Free memory was 138.2 MB in the beginning and 119.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3626.05 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 119.3 MB in the beginning and 71.0 MB in the end (delta: 48.3 MB). Peak memory consumption was 81.3 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 *a = malloc(sizeof(int)*N); [L30] i=0 [L30] COND TRUE i N [L38] EXPR a[i] [L38] a[i] = a[i] [L35] i++ [L35] COND FALSE !(i