/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:25:27,132 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-18 20:25:27,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:25:27,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:25:27,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:25:27,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:25:27,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:25:27,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:25:27,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:25:27,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:25:27,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:25:27,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:25:27,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:25:27,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:25:27,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:25:27,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:25:27,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:25:27,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:25:27,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:25:27,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:25:27,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:25:27,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:25:27,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 20:25:27,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:25:27,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:25:27,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:25:27,252 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 [2020-08-18 20:25:27,296 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:25:27,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:25:27,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:25:27,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:25:27,300 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:25:27,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:25:27,301 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:25:27,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:25:27,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:25:27,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:25:27,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:25:27,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:25:27,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:25:27,304 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:25:27,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:25:27,304 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:25:27,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:25:27,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:25:27,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:25:27,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:25:27,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:25:27,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:25:27,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:25:27,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:25:27,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:25:27,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:25:27,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:25:27,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:25:27,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:25:27,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:25:27,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:25:27,656 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:25:27,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:25:27,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:25:27,662 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:25:27,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-2.i [2020-08-18 20:25:27,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5c720fb0/e76648295f154695bb8ecd14b34ab620/FLAG549a2c014 [2020-08-18 20:25:28,128 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:25:28,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum03-2.i [2020-08-18 20:25:28,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5c720fb0/e76648295f154695bb8ecd14b34ab620/FLAG549a2c014 [2020-08-18 20:25:28,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5c720fb0/e76648295f154695bb8ecd14b34ab620 [2020-08-18 20:25:28,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:25:28,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:25:28,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:25:28,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:25:28,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:25:28,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:25:28" (1/1) ... [2020-08-18 20:25:28,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743cee4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:28, skipping insertion in model container [2020-08-18 20:25:28,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:25:28" (1/1) ... [2020-08-18 20:25:28,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:25:28,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:25:28,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:25:28,813 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:25:28,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:25:28,845 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:25:28,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:28 WrapperNode [2020-08-18 20:25:28,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:25:28,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:25:28,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:25:28,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:25:28,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:28" (1/1) ... [2020-08-18 20:25:28,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:28" (1/1) ... [2020-08-18 20:25:28,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:28" (1/1) ... [2020-08-18 20:25:28,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:28" (1/1) ... [2020-08-18 20:25:28,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:28" (1/1) ... [2020-08-18 20:25:28,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:28" (1/1) ... [2020-08-18 20:25:28,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:28" (1/1) ... [2020-08-18 20:25:28,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:25:28,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:25:28,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:25:28,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:25:28,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:28" (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 [2020-08-18 20:25:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:25:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:25:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 20:25:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:25:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:25:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 20:25:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-18 20:25:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:25:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:25:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:25:29,251 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:25:29,252 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 20:25:29,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:25:29 BoogieIcfgContainer [2020-08-18 20:25:29,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:25:29,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:25:29,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:25:29,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:25:29,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:25:28" (1/3) ... [2020-08-18 20:25:29,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2584ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:25:29, skipping insertion in model container [2020-08-18 20:25:29,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:28" (2/3) ... [2020-08-18 20:25:29,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2584ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:25:29, skipping insertion in model container [2020-08-18 20:25:29,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:25:29" (3/3) ... [2020-08-18 20:25:29,265 INFO L109 eAbstractionObserver]: Analyzing ICFG sum03-2.i [2020-08-18 20:25:29,276 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:25:29,284 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:25:29,298 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:25:29,322 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:25:29,322 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:25:29,322 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:25:29,322 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:25:29,322 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:25:29,323 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:25:29,323 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:25:29,323 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:25:29,338 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-18 20:25:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 20:25:29,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:25:29,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:25:29,345 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:25:29,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:25:29,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1847991872, now seen corresponding path program 1 times [2020-08-18 20:25:29,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:25:29,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930343807] [2020-08-18 20:25:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:25:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:29,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:25:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:25:29,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930343807] [2020-08-18 20:25:29,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:25:29,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:25:29,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341744444] [2020-08-18 20:25:29,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:25:29,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:25:29,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:25:29,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:25:29,841 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-08-18 20:25:29,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:25:29,935 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2020-08-18 20:25:29,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:25:29,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-08-18 20:25:29,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:25:29,945 INFO L225 Difference]: With dead ends: 23 [2020-08-18 20:25:29,945 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:25:29,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:25:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:25:29,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:25:29,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:25:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:25:29,974 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-08-18 20:25:29,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:25:29,975 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:25:29,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:25:29,976 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:25:29,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:25:29,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:25:29,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 20:25:30,045 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 20:25:30,046 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 20:25:30,046 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 20:25:30,046 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 20:25:30,046 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 20:25:30,046 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 20:25:30,047 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 18) the Hoare annotation is: true [2020-08-18 20:25:30,047 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 18) no Hoare annotation was computed. [2020-08-18 20:25:30,047 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0))) [2020-08-18 20:25:30,048 INFO L264 CegarLoopResult]: At program point L16-1(lines 13 17) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0))) [2020-08-18 20:25:30,048 INFO L268 CegarLoopResult]: For program point L13-2(lines 9 18) no Hoare annotation was computed. [2020-08-18 20:25:30,048 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-08-18 20:25:30,048 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-08-18 20:25:30,049 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-08-18 20:25:30,049 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-18 20:25:30,049 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-08-18 20:25:30,049 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-08-18 20:25:30,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:25:30 BoogieIcfgContainer [2020-08-18 20:25:30,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:25:30,071 INFO L168 Benchmark]: Toolchain (without parser) took 1503.13 ms. Allocated memory was 146.3 MB in the beginning and 200.8 MB in the end (delta: 54.5 MB). Free memory was 102.1 MB in the beginning and 130.0 MB in the end (delta: -27.9 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:30,072 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:25:30,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.13 ms. Allocated memory is still 146.3 MB. Free memory was 101.9 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:30,075 INFO L168 Benchmark]: Boogie Preprocessor took 119.11 ms. Allocated memory was 146.3 MB in the beginning and 200.8 MB in the end (delta: 54.5 MB). Free memory was 92.5 MB in the beginning and 179.8 MB in the end (delta: -87.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:30,076 INFO L168 Benchmark]: RCFGBuilder took 289.84 ms. Allocated memory is still 200.8 MB. Free memory was 179.8 MB in the beginning and 167.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:30,077 INFO L168 Benchmark]: TraceAbstraction took 811.00 ms. Allocated memory is still 200.8 MB. Free memory was 166.9 MB in the beginning and 130.0 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:30,081 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.13 ms. Allocated memory is still 146.3 MB. Free memory was 101.9 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.11 ms. Allocated memory was 146.3 MB in the beginning and 200.8 MB in the end (delta: 54.5 MB). Free memory was 92.5 MB in the beginning and 179.8 MB in the end (delta: -87.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.84 ms. Allocated memory is still 200.8 MB. Free memory was 179.8 MB in the beginning and 167.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 811.00 ms. Allocated memory is still 200.8 MB. Free memory was 166.9 MB in the beginning and 130.0 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 2 * x <= sn && sn <= 2 * x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 5 SDslu, 23 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 27 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 675 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...