/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/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:44:40,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:44:40,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:44:40,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 21:44:40,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:44:40,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:44:40,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:44:40,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:44:40,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:44:40,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:44:40,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:44:40,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:44:40,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:44:40,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:44:40,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:44:40,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:44:40,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:44:40,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 21:44:40,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 21:44:40,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 21:44:40,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 21:44:40,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 21:44:40,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 21:44:40,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 21:44:40,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 21:44:40,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:44:40,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:44:40,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:44:40,144 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 21:44:40,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:44:40,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:44:40,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:44:40,171 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:44:40,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:44:40,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:44:40,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:44:40,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:44:40,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:44:40,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:44:40,173 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:44:40,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:44:40,174 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:44:40,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:44:40,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:44:40,175 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:44:40,175 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:44:40,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:44:40,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:44:40,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:44:40,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:44:40,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:44:40,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:44:40,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:44:40,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:44:40,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:44:40,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:44:40,672 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:44:40,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2020-10-23 21:44:40,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa7c3513/1fb14b16f7474752a41f7e2cefea0fdf/FLAG42eb0fb14 [2020-10-23 21:44:41,434 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:44:41,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs1f.c [2020-10-23 21:44:41,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa7c3513/1fb14b16f7474752a41f7e2cefea0fdf/FLAG42eb0fb14 [2020-10-23 21:44:41,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa7c3513/1fb14b16f7474752a41f7e2cefea0fdf [2020-10-23 21:44:41,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:44:41,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:44:41,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:44:41,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:44:41,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:44:41,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:44:41" (1/1) ... [2020-10-23 21:44:41,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d2712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41, skipping insertion in model container [2020-10-23 21:44:41,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:44:41" (1/1) ... [2020-10-23 21:44:41,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:44:41,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:44:42,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:44:42,049 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:44:42,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:44:42,088 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:44:42,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:42 WrapperNode [2020-10-23 21:44:42,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:44:42,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:44:42,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:44:42,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:44:42,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:42" (1/1) ... [2020-10-23 21:44:42,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:42" (1/1) ... [2020-10-23 21:44:42,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:42" (1/1) ... [2020-10-23 21:44:42,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:42" (1/1) ... [2020-10-23 21:44:42,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:42" (1/1) ... [2020-10-23 21:44:42,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:42" (1/1) ... [2020-10-23 21:44:42,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:42" (1/1) ... [2020-10-23 21:44:42,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:44:42,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:44:42,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:44:42,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:44:42,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:42" (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 21:44:42,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:44:42,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:44:42,216 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:44:42,217 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:44:42,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:44:42,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:44:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:44:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:44:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:44:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:44:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:44:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:44:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:44:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:44:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:44:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:44:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:44:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:44:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:44:42,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:44:42,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:44:42,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:44:42,805 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:44:42,806 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 21:44:42,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:44:42 BoogieIcfgContainer [2020-10-23 21:44:42,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:44:42,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:44:42,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:44:42,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:44:42,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:44:41" (1/3) ... [2020-10-23 21:44:42,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ccab711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:44:42, skipping insertion in model container [2020-10-23 21:44:42,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:42" (2/3) ... [2020-10-23 21:44:42,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ccab711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:44:42, skipping insertion in model container [2020-10-23 21:44:42,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:44:42" (3/3) ... [2020-10-23 21:44:42,817 INFO L111 eAbstractionObserver]: Analyzing ICFG brs1f.c [2020-10-23 21:44:42,831 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:44:42,836 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:44:42,851 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:44:42,886 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:44:42,886 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:44:42,886 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:44:42,887 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:44:42,887 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:44:42,887 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:44:42,887 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:44:42,887 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:44:42,910 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-23 21:44:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 21:44:42,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:42,923 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] [2020-10-23 21:44:42,924 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:42,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:42,932 INFO L82 PathProgramCache]: Analyzing trace with hash -341341850, now seen corresponding path program 1 times [2020-10-23 21:44:42,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:42,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234147132] [2020-10-23 21:44:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:43,019 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:43,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:44:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:43,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:44:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:43,256 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 21:44:43,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234147132] [2020-10-23 21:44:43,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:44:43,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:44:43,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96488266] [2020-10-23 21:44:43,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:44:43,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:44:43,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:44:43,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:44:43,281 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-10-23 21:44:43,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:44:43,449 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2020-10-23 21:44:43,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:44:43,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-23 21:44:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:44:43,459 INFO L225 Difference]: With dead ends: 110 [2020-10-23 21:44:43,459 INFO L226 Difference]: Without dead ends: 52 [2020-10-23 21:44:43,463 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 21:44:43,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-23 21:44:43,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-23 21:44:43,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-23 21:44:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-10-23 21:44:43,522 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 36 [2020-10-23 21:44:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:44:43,523 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-10-23 21:44:43,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:44:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-10-23 21:44:43,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 21:44:43,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:43,525 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] [2020-10-23 21:44:43,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:44:43,525 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:43,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:43,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1000671319, now seen corresponding path program 1 times [2020-10-23 21:44:43,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:43,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093459706] [2020-10-23 21:44:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:43,530 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:43,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:44:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:43,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:44:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:43,707 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 21:44:43,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093459706] [2020-10-23 21:44:43,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:44:43,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:44:43,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840075731] [2020-10-23 21:44:43,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:44:43,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:44:43,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:44:43,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:44:43,711 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 5 states. [2020-10-23 21:44:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:44:43,908 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2020-10-23 21:44:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:44:43,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-23 21:44:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:44:43,910 INFO L225 Difference]: With dead ends: 80 [2020-10-23 21:44:43,910 INFO L226 Difference]: Without dead ends: 61 [2020-10-23 21:44:43,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:44:43,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-23 21:44:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-10-23 21:44:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-23 21:44:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-10-23 21:44:43,925 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 36 [2020-10-23 21:44:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:44:43,926 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-10-23 21:44:43,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:44:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-10-23 21:44:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-23 21:44:43,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:43,928 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] [2020-10-23 21:44:43,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:44:43,928 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:43,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:43,929 INFO L82 PathProgramCache]: Analyzing trace with hash -546938271, now seen corresponding path program 1 times [2020-10-23 21:44:43,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:43,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876659125] [2020-10-23 21:44:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:44,049 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:44:44,051 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:44:44,103 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:44:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:44:44,154 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:44:44,185 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:44:44,185 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:44:44,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:44:44,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:44:44 BoogieIcfgContainer [2020-10-23 21:44:44,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:44:44,206 INFO L168 Benchmark]: Toolchain (without parser) took 2417.55 ms. Allocated memory is still 157.3 MB. Free memory was 133.9 MB in the beginning and 82.4 MB in the end (delta: 51.6 MB). Peak memory consumption was 52.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:44,207 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory is still 104.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:44:44,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.10 ms. Allocated memory is still 157.3 MB. Free memory was 133.3 MB in the beginning and 123.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:44,209 INFO L168 Benchmark]: Boogie Preprocessor took 40.32 ms. Allocated memory is still 157.3 MB. Free memory was 123.6 MB in the beginning and 121.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:44,210 INFO L168 Benchmark]: RCFGBuilder took 676.89 ms. Allocated memory is still 157.3 MB. Free memory was 121.9 MB in the beginning and 135.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:44,211 INFO L168 Benchmark]: TraceAbstraction took 1393.20 ms. Allocated memory is still 157.3 MB. Free memory was 135.5 MB in the beginning and 82.4 MB in the end (delta: 53.1 MB). Peak memory consumption was 52.6 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:44,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory is still 104.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.10 ms. Allocated memory is still 157.3 MB. Free memory was 133.3 MB in the beginning and 123.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.32 ms. Allocated memory is still 157.3 MB. Free memory was 123.6 MB in the beginning and 121.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 676.89 ms. Allocated memory is still 157.3 MB. Free memory was 121.9 MB in the beginning and 135.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1393.20 ms. Allocated memory is still 157.3 MB. Free memory was 135.5 MB in the beginning and 82.4 MB in the end (delta: 53.1 MB). Peak memory consumption was 52.6 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