/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/ssinaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:32,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:32,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:32,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:32,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:32,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:32,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:32,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:32,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:32,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:32,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:32,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:32,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:32,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:32,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:32,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:32,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:32,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:32,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:32,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:32,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:32,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:32,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:32,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:32,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:44:32,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:32,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:32,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:32,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:44:32,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:32,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:32,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:32,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:32,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:32,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:32,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:32,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:32,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:32,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:32,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:32,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:32,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:32,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:32,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:32,583 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:32,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:32,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:32,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:32,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:32,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:32,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:32,584 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:33,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:33,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:33,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:33,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:33,153 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:33,154 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ssinaf.c [2020-09-04 17:44:33,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/192d3a9f8/5f761c3b46124e2ab45b824b2b451e41/FLAG00eec847e [2020-09-04 17:44:33,837 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:33,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ssinaf.c [2020-09-04 17:44:33,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/192d3a9f8/5f761c3b46124e2ab45b824b2b451e41/FLAG00eec847e [2020-09-04 17:44:34,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/192d3a9f8/5f761c3b46124e2ab45b824b2b451e41 [2020-09-04 17:44:34,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:34,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:34,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:34,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:34,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:34,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdd0a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34, skipping insertion in model container [2020-09-04 17:44:34,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:34,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:34,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:34,440 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:34,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:34,487 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:34,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34 WrapperNode [2020-09-04 17:44:34,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:34,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:34,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:34,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:34,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:34,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:34,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:34,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:34,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 17:44:34,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:35,140 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:35,140 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 17:44:35,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:35 BoogieIcfgContainer [2020-09-04 17:44:35,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:35,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:35,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:35,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:35,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:34" (1/3) ... [2020-09-04 17:44:35,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25efd5ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:35, skipping insertion in model container [2020-09-04 17:44:35,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (2/3) ... [2020-09-04 17:44:35,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25efd5ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:35, skipping insertion in model container [2020-09-04 17:44:35,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:35" (3/3) ... [2020-09-04 17:44:35,157 INFO L109 eAbstractionObserver]: Analyzing ICFG ssinaf.c [2020-09-04 17:44:35,170 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:35,180 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:35,201 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:35,228 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:35,228 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:35,228 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:35,228 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:35,228 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:35,229 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:35,229 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:35,229 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-09-04 17:44:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-04 17:44:35,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:35,266 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] [2020-09-04 17:44:35,266 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:35,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:35,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2063962602, now seen corresponding path program 1 times [2020-09-04 17:44:35,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:35,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733527937] [2020-09-04 17:44:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:35,358 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:35,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:35,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:44:35,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733527937] [2020-09-04 17:44:35,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:35,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:35,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634015303] [2020-09-04 17:44:35,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:35,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:35,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:35,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:35,626 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-09-04 17:44:35,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:35,933 INFO L93 Difference]: Finished difference Result 167 states and 194 transitions. [2020-09-04 17:44:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:35,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-09-04 17:44:35,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:35,948 INFO L225 Difference]: With dead ends: 167 [2020-09-04 17:44:35,949 INFO L226 Difference]: Without dead ends: 83 [2020-09-04 17:44:35,954 INFO L675 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 [2020-09-04 17:44:35,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-04 17:44:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-04 17:44:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-04 17:44:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-09-04 17:44:36,019 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 40 [2020-09-04 17:44:36,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:36,020 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-09-04 17:44:36,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:36,020 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-09-04 17:44:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-04 17:44:36,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:36,023 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] [2020-09-04 17:44:36,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:36,024 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:36,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:36,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1243022369, now seen corresponding path program 1 times [2020-09-04 17:44:36,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:36,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904424254] [2020-09-04 17:44:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:36,028 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:36,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:44:36,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904424254] [2020-09-04 17:44:36,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:36,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:36,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156828992] [2020-09-04 17:44:36,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:36,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:36,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:36,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:36,183 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 5 states. [2020-09-04 17:44:36,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:36,580 INFO L93 Difference]: Finished difference Result 180 states and 195 transitions. [2020-09-04 17:44:36,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:36,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-09-04 17:44:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:36,591 INFO L225 Difference]: With dead ends: 180 [2020-09-04 17:44:36,591 INFO L226 Difference]: Without dead ends: 125 [2020-09-04 17:44:36,593 INFO L675 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 [2020-09-04 17:44:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-04 17:44:36,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 88. [2020-09-04 17:44:36,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-04 17:44:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-09-04 17:44:36,623 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 40 [2020-09-04 17:44:36,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:36,624 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-09-04 17:44:36,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:36,624 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-09-04 17:44:36,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-04 17:44:36,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:36,627 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:36,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:36,627 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:36,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:36,628 INFO L82 PathProgramCache]: Analyzing trace with hash -88576135, now seen corresponding path program 1 times [2020-09-04 17:44:36,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:36,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145618060] [2020-09-04 17:44:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:36,664 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:36,714 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 17:44:36,714 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:36,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:36,743 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 17:44:36,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:36 BoogieIcfgContainer [2020-09-04 17:44:36,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:36,748 INFO L168 Benchmark]: Toolchain (without parser) took 2596.96 ms. Allocated memory was 138.4 MB in the beginning and 234.4 MB in the end (delta: 95.9 MB). Free memory was 101.0 MB in the beginning and 175.2 MB in the end (delta: -74.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:36,749 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:36,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.50 ms. Allocated memory is still 138.4 MB. Free memory was 100.7 MB in the beginning and 89.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:36,751 INFO L168 Benchmark]: Boogie Preprocessor took 136.25 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 89.8 MB in the beginning and 180.2 MB in the end (delta: -90.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:36,752 INFO L168 Benchmark]: RCFGBuilder took 521.46 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 156.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:36,754 INFO L168 Benchmark]: TraceAbstraction took 1596.16 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 156.0 MB in the beginning and 175.2 MB in the end (delta: -19.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:36,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.50 ms. Allocated memory is still 138.4 MB. Free memory was 100.7 MB in the beginning and 89.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.25 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 89.8 MB in the beginning and 180.2 MB in the end (delta: -90.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 521.46 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 156.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1596.16 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 156.0 MB in the beginning and 175.2 MB in the end (delta: -19.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: 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: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i