/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/sina3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:45:30,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:45:30,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:45:30,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 21:45:30,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:45:30,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:45:30,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:45:30,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:45:30,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:45:30,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:45:30,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:45:30,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:45:30,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:45:30,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:45:30,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:45:30,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:45:30,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:45:30,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:45:30,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:45:30,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:45:30,147 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 21:45:30,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:45:30,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:45:30,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:45:30,176 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:45:30,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:45:30,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:45:30,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:45:30,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:45:30,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:45:30,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:45:30,178 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:45:30,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:45:30,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:45:30,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:45:30,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:45:30,179 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:45:30,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:45:30,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:45:30,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:30,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:45:30,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:45:30,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:45:30,181 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:45:30,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:45:30,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:45:30,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:45:30,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:45:30,698 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:45:30,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina3f.c [2020-10-23 21:45:30,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02141e95/5d2635969a694ad79c9f9f60ae73e80b/FLAGada5f60ef [2020-10-23 21:45:31,373 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:45:31,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina3f.c [2020-10-23 21:45:31,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02141e95/5d2635969a694ad79c9f9f60ae73e80b/FLAGada5f60ef [2020-10-23 21:45:31,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02141e95/5d2635969a694ad79c9f9f60ae73e80b [2020-10-23 21:45:31,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:45:31,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:45:31,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:31,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:45:31,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:45:31,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:31" (1/1) ... [2020-10-23 21:45:31,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bbcb292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:31, skipping insertion in model container [2020-10-23 21:45:31,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:31" (1/1) ... [2020-10-23 21:45:31,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:45:31,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:45:31,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:31,988 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:45:32,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:32,031 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:45:32,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32 WrapperNode [2020-10-23 21:45:32,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:32,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:45:32,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:45:32,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:45:32,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:45:32,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:45:32,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:45:32,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:45:32,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (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 21:45:32,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:45:32,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:45:32,164 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:45:32,164 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:45:32,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:45:32,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:45:32,165 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:45:32,165 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:45:32,165 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:45:32,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:45:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:45:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:45:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:45:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:45:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:45:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:45:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:45:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:45:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:45:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:45:32,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:45:32,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:45:32,605 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:45:32,605 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 21:45:32,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:32 BoogieIcfgContainer [2020-10-23 21:45:32,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:45:32,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:45:32,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:45:32,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:45:32,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:45:31" (1/3) ... [2020-10-23 21:45:32,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f49472b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:32, skipping insertion in model container [2020-10-23 21:45:32,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (2/3) ... [2020-10-23 21:45:32,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f49472b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:32, skipping insertion in model container [2020-10-23 21:45:32,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:32" (3/3) ... [2020-10-23 21:45:32,619 INFO L111 eAbstractionObserver]: Analyzing ICFG sina3f.c [2020-10-23 21:45:32,631 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:45:32,636 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:45:32,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:45:32,675 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:45:32,675 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:45:32,675 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:45:32,676 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:45:32,676 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:45:32,676 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:45:32,676 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:45:32,676 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:45:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-10-23 21:45:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-23 21:45:32,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:32,706 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] [2020-10-23 21:45:32,707 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:32,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:32,713 INFO L82 PathProgramCache]: Analyzing trace with hash 627695450, now seen corresponding path program 1 times [2020-10-23 21:45:32,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:32,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623399668] [2020-10-23 21:45:32,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:32,808 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:33,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:33,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:33,054 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 21:45:33,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623399668] [2020-10-23 21:45:33,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:33,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:45:33,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072569304] [2020-10-23 21:45:33,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:45:33,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:33,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:45:33,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:33,082 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-10-23 21:45:33,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:33,316 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2020-10-23 21:45:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:45:33,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-10-23 21:45:33,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:33,327 INFO L225 Difference]: With dead ends: 151 [2020-10-23 21:45:33,328 INFO L226 Difference]: Without dead ends: 76 [2020-10-23 21:45:33,332 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 21:45:33,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-23 21:45:33,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-23 21:45:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-23 21:45:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-23 21:45:33,388 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 45 [2020-10-23 21:45:33,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:33,388 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-23 21:45:33,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:45:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-23 21:45:33,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-23 21:45:33,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:33,391 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] [2020-10-23 21:45:33,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:45:33,392 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:33,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:33,393 INFO L82 PathProgramCache]: Analyzing trace with hash 240330880, now seen corresponding path program 1 times [2020-10-23 21:45:33,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:33,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870936754] [2020-10-23 21:45:33,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:33,397 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:33,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:33,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:33,589 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 21:45:33,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870936754] [2020-10-23 21:45:33,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:33,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:45:33,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278325719] [2020-10-23 21:45:33,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:45:33,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:33,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:45:33,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:45:33,593 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 5 states. [2020-10-23 21:45:33,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:33,901 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2020-10-23 21:45:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:45:33,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-23 21:45:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:33,906 INFO L225 Difference]: With dead ends: 147 [2020-10-23 21:45:33,906 INFO L226 Difference]: Without dead ends: 106 [2020-10-23 21:45:33,908 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 21:45:33,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-23 21:45:33,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 80. [2020-10-23 21:45:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-23 21:45:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-23 21:45:33,930 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 45 [2020-10-23 21:45:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:33,930 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-23 21:45:33,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:45:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-23 21:45:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-23 21:45:33,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:33,933 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, 1, 1] [2020-10-23 21:45:33,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:45:33,934 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:33,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:33,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1016562738, now seen corresponding path program 1 times [2020-10-23 21:45:33,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:33,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762187832] [2020-10-23 21:45:33,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:34,074 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:45:34,077 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:34,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:34,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:34,237 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:45:34,238 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:45:34,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:45:34,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:45:34 BoogieIcfgContainer [2020-10-23 21:45:34,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:45:34,261 INFO L168 Benchmark]: Toolchain (without parser) took 2511.08 ms. Allocated memory is still 165.7 MB. Free memory was 143.0 MB in the beginning and 100.9 MB in the end (delta: 42.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:34,262 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 107.1 MB in the beginning and 107.1 MB in the end (delta: 68.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:34,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.44 ms. Allocated memory is still 165.7 MB. Free memory was 142.3 MB in the beginning and 132.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:34,264 INFO L168 Benchmark]: Boogie Preprocessor took 45.41 ms. Allocated memory is still 165.7 MB. Free memory was 132.2 MB in the beginning and 130.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:34,265 INFO L168 Benchmark]: RCFGBuilder took 527.69 ms. Allocated memory is still 165.7 MB. Free memory was 130.6 MB in the beginning and 138.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:34,265 INFO L168 Benchmark]: TraceAbstraction took 1649.47 ms. Allocated memory is still 165.7 MB. Free memory was 137.9 MB in the beginning and 100.9 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.2 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:34,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 107.1 MB in the beginning and 107.1 MB in the end (delta: 68.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 273.44 ms. Allocated memory is still 165.7 MB. Free memory was 142.3 MB in the beginning and 132.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.41 ms. Allocated memory is still 165.7 MB. Free memory was 132.2 MB in the beginning and 130.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 527.69 ms. Allocated memory is still 165.7 MB. Free memory was 130.6 MB in the beginning and 138.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1649.47 ms. Allocated memory is still 165.7 MB. Free memory was 137.9 MB in the beginning and 100.9 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.2 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] long long *a = malloc(sizeof(long long)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 1 [L33] i=0 [L33] COND TRUE i