/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/brs5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:00,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:00,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:00,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:00,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:00,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:00,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:00,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:00,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:00,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:00,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:00,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:00,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:00,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:00,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:00,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:00,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:00,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:00,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:00,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:00,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:00,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:00,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:00,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:00,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:56:00,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:00,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:00,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:00,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:00,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:00,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:00,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:00,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:00,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:00,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:00,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:00,936 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 01:56:00,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:00,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:00,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:00,951 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:00,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:00,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:00,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:00,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:00,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:00,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:00,953 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:00,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:00,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:00,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:00,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:00,954 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:00,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:00,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:00,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:00,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:00,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:00,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:00,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:01,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:01,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:01,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:01,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:01,359 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:01,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs5f.c [2020-11-07 01:56:01,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc6a88a8f/852a95fd7f0142718b8058f9be1a042f/FLAGe7b3d4e11 [2020-11-07 01:56:02,034 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:02,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs5f.c [2020-11-07 01:56:02,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc6a88a8f/852a95fd7f0142718b8058f9be1a042f/FLAGe7b3d4e11 [2020-11-07 01:56:02,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc6a88a8f/852a95fd7f0142718b8058f9be1a042f [2020-11-07 01:56:02,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:02,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:02,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:02,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:02,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:02,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:02" (1/1) ... [2020-11-07 01:56:02,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8f5d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:02, skipping insertion in model container [2020-11-07 01:56:02,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:02" (1/1) ... [2020-11-07 01:56:02,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:02,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:02,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:02,592 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:02,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:02,635 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:02,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:02 WrapperNode [2020-11-07 01:56:02,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:02,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:02,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:02,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:02,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:02" (1/1) ... [2020-11-07 01:56:02,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:02" (1/1) ... [2020-11-07 01:56:02,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:02" (1/1) ... [2020-11-07 01:56:02,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:02" (1/1) ... [2020-11-07 01:56:02,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:02" (1/1) ... [2020-11-07 01:56:02,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:02" (1/1) ... [2020-11-07 01:56:02,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:02" (1/1) ... [2020-11-07 01:56:02,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:02,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:02,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:02,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:02,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:02" (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 01:56:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:03,399 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:03,401 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-07 01:56:03,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:03 BoogieIcfgContainer [2020-11-07 01:56:03,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:03,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:03,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:03,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:03,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:02" (1/3) ... [2020-11-07 01:56:03,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f45394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:03, skipping insertion in model container [2020-11-07 01:56:03,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:02" (2/3) ... [2020-11-07 01:56:03,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f45394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:03, skipping insertion in model container [2020-11-07 01:56:03,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:03" (3/3) ... [2020-11-07 01:56:03,416 INFO L111 eAbstractionObserver]: Analyzing ICFG brs5f.c [2020-11-07 01:56:03,435 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:03,439 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:03,456 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:03,495 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:03,495 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:03,495 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:03,496 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:03,496 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:03,496 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:03,496 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:03,496 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:03,519 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-11-07 01:56:03,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-07 01:56:03,536 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:03,537 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] [2020-11-07 01:56:03,537 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:03,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:03,548 INFO L82 PathProgramCache]: Analyzing trace with hash -341341850, now seen corresponding path program 1 times [2020-11-07 01:56:03,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:03,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122681226] [2020-11-07 01:56:03,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:03,656 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:03,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:03,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:03,981 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 01:56:03,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122681226] [2020-11-07 01:56:03,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:03,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:03,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913461197] [2020-11-07 01:56:03,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:03,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:04,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:04,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:04,009 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-11-07 01:56:04,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:04,214 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2020-11-07 01:56:04,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:04,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-11-07 01:56:04,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:04,225 INFO L225 Difference]: With dead ends: 111 [2020-11-07 01:56:04,226 INFO L226 Difference]: Without dead ends: 53 [2020-11-07 01:56:04,230 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 01:56:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-07 01:56:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-07 01:56:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-07 01:56:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2020-11-07 01:56:04,294 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 36 [2020-11-07 01:56:04,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:04,294 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2020-11-07 01:56:04,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:04,295 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2020-11-07 01:56:04,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-07 01:56:04,296 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:04,297 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] [2020-11-07 01:56:04,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:04,297 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:04,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1000671319, now seen corresponding path program 1 times [2020-11-07 01:56:04,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:04,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702798382] [2020-11-07 01:56:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:04,307 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:04,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:04,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:04,488 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 01:56:04,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702798382] [2020-11-07 01:56:04,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:04,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:56:04,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702141516] [2020-11-07 01:56:04,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:56:04,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:04,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:56:04,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:56:04,497 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 5 states. [2020-11-07 01:56:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:04,767 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-11-07 01:56:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:56:04,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-11-07 01:56:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:04,770 INFO L225 Difference]: With dead ends: 88 [2020-11-07 01:56:04,770 INFO L226 Difference]: Without dead ends: 62 [2020-11-07 01:56:04,772 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 01:56:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-07 01:56:04,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-11-07 01:56:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-07 01:56:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-11-07 01:56:04,791 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 36 [2020-11-07 01:56:04,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:04,792 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-11-07 01:56:04,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:56:04,792 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-11-07 01:56:04,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 01:56:04,794 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:04,794 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] [2020-11-07 01:56:04,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:04,795 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:04,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:04,796 INFO L82 PathProgramCache]: Analyzing trace with hash -546938271, now seen corresponding path program 1 times [2020-11-07 01:56:04,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:04,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274316301] [2020-11-07 01:56:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:04,981 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:04,983 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:05,038 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:05,112 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:05,183 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:56:05,183 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:05,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:56:05,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:05 BoogieIcfgContainer [2020-11-07 01:56:05,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:05,207 INFO L168 Benchmark]: Toolchain (without parser) took 2847.17 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 128.2 MB in the beginning and 152.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:05,208 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:05,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.62 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 117.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:05,210 INFO L168 Benchmark]: Boogie Preprocessor took 45.71 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 115.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:05,211 INFO L168 Benchmark]: RCFGBuilder took 719.77 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 133.0 MB in the end (delta: -17.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:05,212 INFO L168 Benchmark]: TraceAbstraction took 1796.94 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 132.5 MB in the beginning and 152.7 MB in the end (delta: -20.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:05,216 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 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.62 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 117.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.71 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 115.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 719.77 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 133.0 MB in the end (delta: -17.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1796.94 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 132.5 MB in the beginning and 152.7 MB in the end (delta: -20.2 MB). Peak memory consumption was 12.3 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] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i