/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/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:45:12,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:45:12,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:45:12,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:45:12,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:45:12,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:45:12,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:45:12,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:45:12,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:45:12,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:45:12,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:45:12,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:45:12,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:45:12,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:45:12,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:45:12,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:45:12,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:45:12,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:45:12,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:45:12,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:45:12,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:45:12,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:45:12,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:45:12,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:45:12,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:45:12,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 21:45:12,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 21:45:12,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 21:45:12,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 21:45:12,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 21:45:12,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 21:45:12,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 21:45:12,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 21:45:12,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:45:12,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:45:12,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:45:12,255 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 21:45:12,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:45:12,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:45:12,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:45:12,275 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:45:12,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:45:12,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:45:12,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:45:12,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:45:12,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:45:12,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:45:12,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:45:12,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:45:12,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:45:12,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:45:12,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:45:12,278 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:45:12,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:45:12,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:45:12,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:12,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:45:12,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:45:12,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:45:12,279 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:45:12,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:45:12,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:45:12,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:45:12,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:45:12,686 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:45:12,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2020-10-23 21:45:12,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6f085bc/80085adb26ee41bb9c57d8208a14c664/FLAG2ae033abb [2020-10-23 21:45:13,464 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:45:13,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1f.c [2020-10-23 21:45:13,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6f085bc/80085adb26ee41bb9c57d8208a14c664/FLAG2ae033abb [2020-10-23 21:45:13,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6f085bc/80085adb26ee41bb9c57d8208a14c664 [2020-10-23 21:45:13,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:45:13,845 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:45:13,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:13,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:45:13,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:45:13,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:13" (1/1) ... [2020-10-23 21:45:13,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc218e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:13, skipping insertion in model container [2020-10-23 21:45:13,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:13" (1/1) ... [2020-10-23 21:45:13,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:45:13,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:45:14,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:14,085 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:45:14,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:14,130 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:45:14,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:14 WrapperNode [2020-10-23 21:45:14,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:14,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:45:14,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:45:14,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:45:14,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:14" (1/1) ... [2020-10-23 21:45:14,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:14" (1/1) ... [2020-10-23 21:45:14,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:14" (1/1) ... [2020-10-23 21:45:14,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:14" (1/1) ... [2020-10-23 21:45:14,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:14" (1/1) ... [2020-10-23 21:45:14,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:14" (1/1) ... [2020-10-23 21:45:14,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:14" (1/1) ... [2020-10-23 21:45:14,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:45:14,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:45:14,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:45:14,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:45:14,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:14" (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 21:45:14,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:45:14,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:45:14,296 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:45:14,296 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:45:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:45:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:45:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:45:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:45:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:45:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:45:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:45:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:45:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:45:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:45:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:45:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:45:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:45:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:45:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:45:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:45:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:45:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:45:14,918 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:45:14,919 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 21:45:14,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:14 BoogieIcfgContainer [2020-10-23 21:45:14,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:45:14,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:45:14,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:45:14,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:45:14,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:45:13" (1/3) ... [2020-10-23 21:45:14,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b337ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:14, skipping insertion in model container [2020-10-23 21:45:14,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:14" (2/3) ... [2020-10-23 21:45:14,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b337ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:14, skipping insertion in model container [2020-10-23 21:45:14,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:14" (3/3) ... [2020-10-23 21:45:14,936 INFO L111 eAbstractionObserver]: Analyzing ICFG res1f.c [2020-10-23 21:45:14,953 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:45:14,960 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:45:14,980 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:45:15,016 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:45:15,017 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:45:15,017 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:45:15,017 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:45:15,017 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:45:15,017 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:45:15,018 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:45:15,018 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:45:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-10-23 21:45:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 21:45:15,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:15,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:15,062 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:15,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:15,075 INFO L82 PathProgramCache]: Analyzing trace with hash 609850443, now seen corresponding path program 1 times [2020-10-23 21:45:15,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:15,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436128576] [2020-10-23 21:45:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:15,181 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:15,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:15,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:15,495 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 21:45:15,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436128576] [2020-10-23 21:45:15,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:15,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:45:15,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973161082] [2020-10-23 21:45:15,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:45:15,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:15,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:45:15,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:15,521 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 3 states. [2020-10-23 21:45:15,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:15,746 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-10-23 21:45:15,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:45:15,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-10-23 21:45:15,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:15,758 INFO L225 Difference]: With dead ends: 141 [2020-10-23 21:45:15,758 INFO L226 Difference]: Without dead ends: 68 [2020-10-23 21:45:15,762 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 21:45:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-23 21:45:15,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-23 21:45:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-23 21:45:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-10-23 21:45:15,818 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 43 [2020-10-23 21:45:15,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:15,819 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-10-23 21:45:15,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:45:15,819 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-10-23 21:45:15,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 21:45:15,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:15,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:15,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:45:15,822 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:15,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:15,826 INFO L82 PathProgramCache]: Analyzing trace with hash -315691279, now seen corresponding path program 1 times [2020-10-23 21:45:15,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:15,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095296965] [2020-10-23 21:45:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:15,833 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:15,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:16,017 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 21:45:16,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095296965] [2020-10-23 21:45:16,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:16,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:45:16,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954103624] [2020-10-23 21:45:16,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:45:16,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:16,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:45:16,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:45:16,021 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 5 states. [2020-10-23 21:45:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:16,353 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2020-10-23 21:45:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:45:16,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-23 21:45:16,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:16,356 INFO L225 Difference]: With dead ends: 125 [2020-10-23 21:45:16,356 INFO L226 Difference]: Without dead ends: 92 [2020-10-23 21:45:16,358 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 21:45:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-23 21:45:16,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2020-10-23 21:45:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-23 21:45:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-10-23 21:45:16,377 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 43 [2020-10-23 21:45:16,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:16,378 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-10-23 21:45:16,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:45:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-10-23 21:45:16,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-23 21:45:16,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:16,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:16,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:45:16,381 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:16,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1392575935, now seen corresponding path program 1 times [2020-10-23 21:45:16,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:16,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380795391] [2020-10-23 21:45:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:16,530 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:45:16,532 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:16,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:16,727 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:16,793 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:45:16,795 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:45:16,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:45:16,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:45:16 BoogieIcfgContainer [2020-10-23 21:45:16,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:45:16,836 INFO L168 Benchmark]: Toolchain (without parser) took 2994.85 ms. Allocated memory is still 152.0 MB. Free memory was 128.6 MB in the beginning and 92.3 MB in the end (delta: 36.4 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:16,839 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory is still 97.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:16,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.56 ms. Allocated memory is still 152.0 MB. Free memory was 128.0 MB in the beginning and 117.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:16,842 INFO L168 Benchmark]: Boogie Preprocessor took 57.37 ms. Allocated memory is still 152.0 MB. Free memory was 117.5 MB in the beginning and 115.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:16,843 INFO L168 Benchmark]: RCFGBuilder took 728.48 ms. Allocated memory is still 152.0 MB. Free memory was 115.8 MB in the beginning and 121.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:16,844 INFO L168 Benchmark]: TraceAbstraction took 1904.75 ms. Allocated memory is still 152.0 MB. Free memory was 121.4 MB in the beginning and 92.3 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:16,856 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory is still 97.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.56 ms. Allocated memory is still 152.0 MB. Free memory was 128.0 MB in the beginning and 117.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.37 ms. Allocated memory is still 152.0 MB. Free memory was 117.5 MB in the beginning and 115.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 728.48 ms. Allocated memory is still 152.0 MB. Free memory was 115.8 MB in the beginning and 121.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1904.75 ms. Allocated memory is still 152.0 MB. Free memory was 121.4 MB in the beginning and 92.3 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.0 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); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 1 [L33] i=0 [L33] COND TRUE i