/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:23:15,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:23:15,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:23:15,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:23:15,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:23:15,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:23:15,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:23:15,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:23:15,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:23:15,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:23:15,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:23:15,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:23:15,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:23:15,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:23:15,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:23:15,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:23:15,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:23:15,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:23:15,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:23:15,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:23:15,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:23:15,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:23:15,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:23:15,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:23:15,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:23:15,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:23:15,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:23:15,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:23:15,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:23:15,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:23:15,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:23:15,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:23:15,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:23:15,371 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:23:15,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:23:15,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:23:15,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:23:15,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:23:15,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:23:15,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:23:15,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:23:15,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:23:15,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:23:15,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:23:15,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:23:15,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:23:15,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:23:15,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:23:15,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:23:15,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:23:15,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:23:15,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:23:15,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:23:15,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:23:15,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:23:15,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:23:15,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:23:15,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:23:15,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:23:15,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:23:15,837 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:23:15,841 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:23:15,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:23:15,843 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:23:15,844 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-2.c [2020-09-04 13:23:15,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df3832dac/a68a81b49bbb46b98d3cd85e6a4aeb7c/FLAG9504dd82a [2020-09-04 13:23:16,434 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:23:16,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_non_eq-2.c [2020-09-04 13:23:16,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df3832dac/a68a81b49bbb46b98d3cd85e6a4aeb7c/FLAG9504dd82a [2020-09-04 13:23:16,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df3832dac/a68a81b49bbb46b98d3cd85e6a4aeb7c [2020-09-04 13:23:16,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:23:16,800 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:23:16,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:23:16,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:23:16,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:23:16,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:23:16" (1/1) ... [2020-09-04 13:23:16,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2c32e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:23:16, skipping insertion in model container [2020-09-04 13:23:16,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:23:16" (1/1) ... [2020-09-04 13:23:16,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:23:16,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:23:17,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:23:17,078 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:23:17,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:23:17,118 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:23:17,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:23:17 WrapperNode [2020-09-04 13:23:17,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:23:17,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:23:17,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:23:17,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:23:17,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:23:17" (1/1) ... [2020-09-04 13:23:17,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:23:17" (1/1) ... [2020-09-04 13:23:17,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:23:17" (1/1) ... [2020-09-04 13:23:17,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:23:17" (1/1) ... [2020-09-04 13:23:17,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:23:17" (1/1) ... [2020-09-04 13:23:17,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:23:17" (1/1) ... [2020-09-04 13:23:17,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:23:17" (1/1) ... [2020-09-04 13:23:17,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:23:17,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:23:17,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:23:17,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:23:17,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:23:17" (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 13:23:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:23:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:23:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-04 13:23:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:23:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 13:23:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:23:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-04 13:23:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:23:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:23:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:23:17,500 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:23:17,501 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 13:23:17,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:23:17 BoogieIcfgContainer [2020-09-04 13:23:17,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:23:17,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:23:17,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:23:17,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:23:17,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:23:16" (1/3) ... [2020-09-04 13:23:17,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd774be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:23:17, skipping insertion in model container [2020-09-04 13:23:17,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:23:17" (2/3) ... [2020-09-04 13:23:17,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd774be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:23:17, skipping insertion in model container [2020-09-04 13:23:17,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:23:17" (3/3) ... [2020-09-04 13:23:17,517 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-2.c [2020-09-04 13:23:17,529 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:23:17,540 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:23:17,565 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:23:17,608 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:23:17,609 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:23:17,609 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:23:17,609 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:23:17,610 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:23:17,610 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:23:17,610 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:23:17,610 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:23:17,650 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-09-04 13:23:17,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-04 13:23:17,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:23:17,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:23:17,662 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:23:17,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:23:17,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2020-09-04 13:23:17,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:23:17,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756796972] [2020-09-04 13:23:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:23:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:23:18,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:23:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:23:18,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:23:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:23:18,135 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 13:23:18,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756796972] [2020-09-04 13:23:18,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:23:18,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:23:18,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174641211] [2020-09-04 13:23:18,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:23:18,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:23:18,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:23:18,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:23:18,168 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2020-09-04 13:23:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:23:18,310 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-09-04 13:23:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:23:18,313 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-09-04 13:23:18,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:23:18,330 INFO L225 Difference]: With dead ends: 32 [2020-09-04 13:23:18,330 INFO L226 Difference]: Without dead ends: 18 [2020-09-04 13:23:18,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:23:18,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-04 13:23:18,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-09-04 13:23:18,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-04 13:23:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-09-04 13:23:18,403 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-09-04 13:23:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:23:18,404 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-09-04 13:23:18,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:23:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-09-04 13:23:18,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 13:23:18,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:23:18,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:23:18,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:23:18,408 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:23:18,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:23:18,408 INFO L82 PathProgramCache]: Analyzing trace with hash -118151420, now seen corresponding path program 1 times [2020-09-04 13:23:18,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:23:18,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377992012] [2020-09-04 13:23:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:23:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:23:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:23:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:23:18,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:23:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:23:18,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:23:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:23:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:23:18,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377992012] [2020-09-04 13:23:18,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368584385] [2020-09-04 13:23:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:23:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:23:18,770 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 28 conjunts are in the unsatisfiable core [2020-09-04 13:23:18,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:23:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:23:19,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:23:19,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-09-04 13:23:19,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27307085] [2020-09-04 13:23:19,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 13:23:19,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:23:19,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 13:23:19,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:23:19,108 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 12 states. [2020-09-04 13:23:19,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:23:19,332 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-09-04 13:23:19,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 13:23:19,333 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-04 13:23:19,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:23:19,333 INFO L225 Difference]: With dead ends: 23 [2020-09-04 13:23:19,333 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:23:19,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-09-04 13:23:19,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:23:19,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:23:19,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:23:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:23:19,337 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-04 13:23:19,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:23:19,337 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:23:19,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 13:23:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:23:19,338 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:23:19,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:23:19,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:23:19,573 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:23:19,573 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:23:19,574 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:23:19,574 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:23:19,574 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:23:19,574 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:23:19,574 INFO L268 CegarLoopResult]: For program point sumEXIT(lines 4 10) no Hoare annotation was computed. [2020-09-04 13:23:19,575 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|)) [2020-09-04 13:23:19,575 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-04 13:23:19,575 INFO L268 CegarLoopResult]: For program point L5(lines 5 9) no Hoare annotation was computed. [2020-09-04 13:23:19,575 INFO L268 CegarLoopResult]: For program point sumFINAL(lines 4 10) no Hoare annotation was computed. [2020-09-04 13:23:19,575 INFO L271 CegarLoopResult]: At program point sumENTRY(lines 4 10) the Hoare annotation is: true [2020-09-04 13:23:19,576 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-09-04 13:23:19,576 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 12 19) the Hoare annotation is: true [2020-09-04 13:23:19,576 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 19) no Hoare annotation was computed. [2020-09-04 13:23:19,576 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-04 13:23:19,576 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-04 13:23:19,577 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-09-04 13:23:19,577 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-04 13:23:19,577 INFO L268 CegarLoopResult]: For program point L16-2(lines 12 19) no Hoare annotation was computed. [2020-09-04 13:23:19,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:23:19 BoogieIcfgContainer [2020-09-04 13:23:19,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:23:19,588 INFO L168 Benchmark]: Toolchain (without parser) took 2786.94 ms. Allocated memory was 146.3 MB in the beginning and 235.9 MB in the end (delta: 89.7 MB). Free memory was 102.8 MB in the beginning and 171.5 MB in the end (delta: -68.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:23:19,589 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 146.3 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:23:19,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.09 ms. Allocated memory is still 146.3 MB. Free memory was 102.6 MB in the beginning and 92.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:23:19,591 INFO L168 Benchmark]: Boogie Preprocessor took 29.89 ms. Allocated memory is still 146.3 MB. Free memory was 92.9 MB in the beginning and 91.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:23:19,592 INFO L168 Benchmark]: RCFGBuilder took 356.42 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 91.5 MB in the beginning and 170.0 MB in the end (delta: -78.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:23:19,593 INFO L168 Benchmark]: TraceAbstraction took 2076.67 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 170.0 MB in the beginning and 171.5 MB in the end (delta: -1.5 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:23:19,597 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 146.3 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.09 ms. Allocated memory is still 146.3 MB. Free memory was 102.6 MB in the beginning and 92.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.89 ms. Allocated memory is still 146.3 MB. Free memory was 92.9 MB in the beginning and 91.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 356.42 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 91.5 MB in the beginning and 170.0 MB in the end (delta: -78.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2076.67 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 170.0 MB in the beginning and 171.5 MB in the end (delta: -1.5 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 11 SDslu, 100 SDs, 0 SdLazy, 111 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 13 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 6390 SizeOfPredicates, 7 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...