/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/indp4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:45:02,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:45:02,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:45:02,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 21:45:02,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:45:02,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:45:02,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:45:02,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:45:02,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:45:02,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:45:02,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:45:02,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:45:02,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:45:02,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:45:02,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:45:02,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:45:02,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:45:02,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 21:45:02,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 21:45:02,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 21:45:02,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 21:45:02,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 21:45:02,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 21:45:02,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 21:45:02,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 21:45:02,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:45:02,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:45:02,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:45:02,279 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 21:45:02,295 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:45:02,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:45:02,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:45:02,298 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:45:02,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:45:02,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:45:02,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:45:02,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:45:02,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:45:02,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:45:02,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:45:02,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:45:02,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:45:02,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:45:02,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:45:02,301 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:45:02,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:45:02,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:45:02,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:02,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:45:02,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:45:02,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:45:02,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:45:02,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:45:02,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:45:02,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:45:02,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:45:02,703 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:45:02,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp4f.c [2020-10-23 21:45:02,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d8ca61a/48bba6a3991e49138666701972335e51/FLAG51a32f205 [2020-10-23 21:45:03,506 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:45:03,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp4f.c [2020-10-23 21:45:03,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d8ca61a/48bba6a3991e49138666701972335e51/FLAG51a32f205 [2020-10-23 21:45:03,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d8ca61a/48bba6a3991e49138666701972335e51 [2020-10-23 21:45:03,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:45:03,878 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:45:03,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:03,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:45:03,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:45:03,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:03" (1/1) ... [2020-10-23 21:45:03,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f63565a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:03, skipping insertion in model container [2020-10-23 21:45:03,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:03" (1/1) ... [2020-10-23 21:45:03,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:45:03,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:45:04,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:04,158 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:45:04,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:04,201 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:45:04,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:04 WrapperNode [2020-10-23 21:45:04,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:04,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:45:04,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:45:04,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:45:04,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:04" (1/1) ... [2020-10-23 21:45:04,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:04" (1/1) ... [2020-10-23 21:45:04,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:04" (1/1) ... [2020-10-23 21:45:04,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:04" (1/1) ... [2020-10-23 21:45:04,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:04" (1/1) ... [2020-10-23 21:45:04,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:04" (1/1) ... [2020-10-23 21:45:04,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:04" (1/1) ... [2020-10-23 21:45:04,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:45:04,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:45:04,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:45:04,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:45:04,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:04" (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 21:45:04,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:45:04,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:45:04,381 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:45:04,381 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:45:04,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:45:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:45:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:45:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:45:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:45:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:45:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:45:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:45:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:45:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:45:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:45:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:45:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:45:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:45:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:45:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:45:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:45:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:45:05,013 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:45:05,014 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 21:45:05,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:05 BoogieIcfgContainer [2020-10-23 21:45:05,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:45:05,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:45:05,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:45:05,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:45:05,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:45:03" (1/3) ... [2020-10-23 21:45:05,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f214736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:05, skipping insertion in model container [2020-10-23 21:45:05,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:04" (2/3) ... [2020-10-23 21:45:05,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f214736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:05, skipping insertion in model container [2020-10-23 21:45:05,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:05" (3/3) ... [2020-10-23 21:45:05,026 INFO L111 eAbstractionObserver]: Analyzing ICFG indp4f.c [2020-10-23 21:45:05,040 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:45:05,045 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:45:05,061 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:45:05,087 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:45:05,087 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:45:05,088 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:45:05,088 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:45:05,088 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:45:05,088 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:45:05,088 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:45:05,089 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:45:05,107 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-10-23 21:45:05,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 21:45:05,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:05,120 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] [2020-10-23 21:45:05,121 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:05,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1087441824, now seen corresponding path program 1 times [2020-10-23 21:45:05,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:05,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053513200] [2020-10-23 21:45:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:05,241 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:05,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:05,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:05,614 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 21:45:05,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053513200] [2020-10-23 21:45:05,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:05,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:45:05,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541465534] [2020-10-23 21:45:05,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:45:05,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:05,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:45:05,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:05,644 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-10-23 21:45:05,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:05,857 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2020-10-23 21:45:05,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:45:05,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-10-23 21:45:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:05,869 INFO L225 Difference]: With dead ends: 119 [2020-10-23 21:45:05,870 INFO L226 Difference]: Without dead ends: 62 [2020-10-23 21:45:05,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:05,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-23 21:45:05,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-23 21:45:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-23 21:45:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-10-23 21:45:05,933 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 39 [2020-10-23 21:45:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:05,933 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-10-23 21:45:05,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:45:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-10-23 21:45:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 21:45:05,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:05,936 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] [2020-10-23 21:45:05,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:45:05,937 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:05,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:05,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2019697356, now seen corresponding path program 1 times [2020-10-23 21:45:05,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:05,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431072491] [2020-10-23 21:45:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:05,943 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:05,967 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-23 21:45:05,967 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:45:05,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:45:05,990 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-23 21:45:05,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:45:05 BoogieIcfgContainer [2020-10-23 21:45:05,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:45:05,993 INFO L168 Benchmark]: Toolchain (without parser) took 2120.34 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 83.7 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.5 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:05,994 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:05,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.70 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:05,997 INFO L168 Benchmark]: Boogie Preprocessor took 58.51 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:05,998 INFO L168 Benchmark]: RCFGBuilder took 753.04 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 129.8 MB in the end (delta: -14.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:05,999 INFO L168 Benchmark]: TraceAbstraction took 972.21 ms. Allocated memory is still 151.0 MB. Free memory was 129.3 MB in the beginning and 83.7 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:06,003 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 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 318.70 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.51 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 753.04 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 129.8 MB in the end (delta: -14.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 972.21 ms. Allocated memory is still 151.0 MB. Free memory was 129.3 MB in the beginning and 83.7 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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 *a = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND FALSE !(i