/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:51:01,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:51:01,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:51:01,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:51:01,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:51:01,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:51:01,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:51:01,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:51:01,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:51:01,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:51:01,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:51:01,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:51:01,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:51:01,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:51:01,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:51:01,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:51:01,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:51:01,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:51:01,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:51:01,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:51:01,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:51:01,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:51:01,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:51:01,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:51:01,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 15:51:01,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:51:01,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:51:01,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:51:01,570 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 [2020-08-21 15:51:01,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:51:01,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:51:01,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:51:01,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:51:01,612 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:51:01,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:51:01,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:51:01,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:51:01,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:51:01,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:51:01,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:51:01,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:51:01,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:51:01,616 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:51:01,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:51:01,616 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:51:01,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:51:01,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:51:01,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:51:01,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:51:01,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:51:01,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:51:01,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:51:01,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:51:01,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:51:01,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:51:01,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:51:01,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:51:01,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:51:01,619 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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:51:01,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:51:01,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:51:01,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:51:01,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:51:01,923 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:51:01,923 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2020-08-21 15:51:01,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23b2b75b8/bafa3c489f1a43a58f92216db2db0955/FLAG21fb01b0a [2020-08-21 15:51:02,426 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:51:02,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum01-2.i [2020-08-21 15:51:02,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23b2b75b8/bafa3c489f1a43a58f92216db2db0955/FLAG21fb01b0a [2020-08-21 15:51:02,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23b2b75b8/bafa3c489f1a43a58f92216db2db0955 [2020-08-21 15:51:02,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:51:02,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:51:02,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:51:02,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:51:02,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:51:02,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:51:02" (1/1) ... [2020-08-21 15:51:02,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:02, skipping insertion in model container [2020-08-21 15:51:02,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:51:02" (1/1) ... [2020-08-21 15:51:02,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:51:02,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:51:03,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:51:03,014 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:51:03,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:51:03,053 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:51:03,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:03 WrapperNode [2020-08-21 15:51:03,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:51:03,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:51:03,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:51:03,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:51:03,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:03" (1/1) ... [2020-08-21 15:51:03,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:03" (1/1) ... [2020-08-21 15:51:03,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:03" (1/1) ... [2020-08-21 15:51:03,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:03" (1/1) ... [2020-08-21 15:51:03,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:03" (1/1) ... [2020-08-21 15:51:03,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:03" (1/1) ... [2020-08-21 15:51:03,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:03" (1/1) ... [2020-08-21 15:51:03,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:51:03,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:51:03,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:51:03,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:51:03,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:03" (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 [2020-08-21 15:51:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:51:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:51:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 15:51:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:51:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:51:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 15:51:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:51:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:51:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:51:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:51:03,394 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:51:03,394 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 15:51:03,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:51:03 BoogieIcfgContainer [2020-08-21 15:51:03,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:51:03,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:51:03,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:51:03,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:51:03,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:51:02" (1/3) ... [2020-08-21 15:51:03,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a6c568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:51:03, skipping insertion in model container [2020-08-21 15:51:03,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:03" (2/3) ... [2020-08-21 15:51:03,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a6c568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:51:03, skipping insertion in model container [2020-08-21 15:51:03,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:51:03" (3/3) ... [2020-08-21 15:51:03,406 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2020-08-21 15:51:03,416 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:51:03,424 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:51:03,437 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:51:03,460 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:51:03,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:51:03,461 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:51:03,461 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:51:03,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:51:03,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:51:03,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:51:03,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:51:03,480 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-08-21 15:51:03,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 15:51:03,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:51:03,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:51:03,487 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:51:03,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:51:03,492 INFO L82 PathProgramCache]: Analyzing trace with hash 579653156, now seen corresponding path program 1 times [2020-08-21 15:51:03,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:51:03,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94912540] [2020-08-21 15:51:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:51:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:51:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:51:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:51:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:51:03,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94912540] [2020-08-21 15:51:03,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:51:03,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-21 15:51:03,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949429834] [2020-08-21 15:51:03,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-21 15:51:03,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:51:03,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-21 15:51:03,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-21 15:51:03,635 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-08-21 15:51:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:51:03,659 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-08-21 15:51:03,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-21 15:51:03,661 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-08-21 15:51:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:51:03,669 INFO L225 Difference]: With dead ends: 30 [2020-08-21 15:51:03,670 INFO L226 Difference]: Without dead ends: 13 [2020-08-21 15:51:03,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-21 15:51:03,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-08-21 15:51:03,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-08-21 15:51:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-08-21 15:51:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-08-21 15:51:03,713 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-08-21 15:51:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:51:03,714 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-08-21 15:51:03,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-21 15:51:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-08-21 15:51:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 15:51:03,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:51:03,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:51:03,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:51:03,716 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:51:03,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:51:03,716 INFO L82 PathProgramCache]: Analyzing trace with hash 574112030, now seen corresponding path program 1 times [2020-08-21 15:51:03,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:51:03,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308072913] [2020-08-21 15:51:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:51:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:51:03,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:51:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:51:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:51:03,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308072913] [2020-08-21 15:51:03,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:51:03,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:51:03,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179151591] [2020-08-21 15:51:03,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:51:03,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:51:03,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:51:03,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:51:03,828 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-08-21 15:51:03,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:51:03,875 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-08-21 15:51:03,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:51:03,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-21 15:51:03,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:51:03,877 INFO L225 Difference]: With dead ends: 19 [2020-08-21 15:51:03,877 INFO L226 Difference]: Without dead ends: 14 [2020-08-21 15:51:03,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:51:03,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-21 15:51:03,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-21 15:51:03,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-21 15:51:03,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-08-21 15:51:03,885 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2020-08-21 15:51:03,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:51:03,885 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-08-21 15:51:03,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:51:03,886 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-08-21 15:51:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 15:51:03,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:51:03,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:51:03,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:51:03,888 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:51:03,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:51:03,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1164206820, now seen corresponding path program 1 times [2020-08-21 15:51:03,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:51:03,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347363481] [2020-08-21 15:51:03,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:51:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:51:04,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:51:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:51:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:51:04,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347363481] [2020-08-21 15:51:04,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:51:04,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 15:51:04,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440836482] [2020-08-21 15:51:04,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:51:04,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:51:04,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:51:04,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:51:04,216 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 9 states. [2020-08-21 15:51:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:51:04,300 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-08-21 15:51:04,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:51:04,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-08-21 15:51:04,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:51:04,302 INFO L225 Difference]: With dead ends: 21 [2020-08-21 15:51:04,302 INFO L226 Difference]: Without dead ends: 16 [2020-08-21 15:51:04,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:51:04,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-21 15:51:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-21 15:51:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-21 15:51:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-08-21 15:51:04,308 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-08-21 15:51:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:51:04,308 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-08-21 15:51:04,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:51:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-08-21 15:51:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 15:51:04,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:51:04,310 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:51:04,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:51:04,310 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:51:04,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:51:04,310 INFO L82 PathProgramCache]: Analyzing trace with hash -946343526, now seen corresponding path program 2 times [2020-08-21 15:51:04,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:51:04,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683417519] [2020-08-21 15:51:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:51:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:51:04,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:51:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:51:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 15:51:04,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683417519] [2020-08-21 15:51:04,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:51:04,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 15:51:04,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150601279] [2020-08-21 15:51:04,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:51:04,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:51:04,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:51:04,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:51:04,558 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 10 states. [2020-08-21 15:51:04,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:51:04,704 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-08-21 15:51:04,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:51:04,705 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-08-21 15:51:04,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:51:04,705 INFO L225 Difference]: With dead ends: 16 [2020-08-21 15:51:04,705 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 15:51:04,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:51:04,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 15:51:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 15:51:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 15:51:04,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 15:51:04,708 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-08-21 15:51:04,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:51:04,708 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 15:51:04,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:51:04,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 15:51:04,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 15:51:04,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:51:04,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 15:51:04,806 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 15:51:04,806 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 15:51:04,806 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 15:51:04,806 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 15:51:04,806 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 15:51:04,807 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 15:51:04,807 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-08-21 15:51:04,807 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2020-08-21 15:51:04,807 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-08-21 15:51:04,807 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2020-08-21 15:51:04,807 INFO L268 CegarLoopResult]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2020-08-21 15:51:04,808 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 16) the Hoare annotation is: (let ((.cse3 (* 2 main_~i~0)) (.cse2 (+ main_~sn~0 2))) (let ((.cse0 (<= .cse3 .cse2)) (.cse1 (<= .cse2 .cse3))) (or (and (= main_~sn~0 0) .cse0 .cse1) (and .cse0 .cse1 (< main_~sn~0 (+ (* 2 main_~n~0) 1)))))) [2020-08-21 15:51:04,808 INFO L264 CegarLoopResult]: At program point L14-4(lines 14 16) the Hoare annotation is: (or (= main_~sn~0 0) (let ((.cse0 (* 2 main_~n~0))) (and (<= .cse0 main_~sn~0) (< main_~sn~0 (+ .cse0 1))))) [2020-08-21 15:51:04,808 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-08-21 15:51:04,808 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-08-21 15:51:04,808 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-08-21 15:51:04,809 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-08-21 15:51:04,809 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-21 15:51:04,809 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-08-21 15:51:04,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:51:04 BoogieIcfgContainer [2020-08-21 15:51:04,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:51:04,832 INFO L168 Benchmark]: Toolchain (without parser) took 2017.02 ms. Allocated memory was 140.5 MB in the beginning and 234.9 MB in the end (delta: 94.4 MB). Free memory was 103.8 MB in the beginning and 177.2 MB in the end (delta: -73.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:51:04,833 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 15:51:04,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.80 ms. Allocated memory is still 140.5 MB. Free memory was 103.6 MB in the beginning and 94.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:51:04,836 INFO L168 Benchmark]: Boogie Preprocessor took 108.33 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.0 MB in the beginning and 182.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:51:04,836 INFO L168 Benchmark]: RCFGBuilder took 233.97 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 170.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:51:04,838 INFO L168 Benchmark]: TraceAbstraction took 1430.28 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 170.2 MB in the beginning and 177.2 MB in the end (delta: -6.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:51:04,842 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 239.80 ms. Allocated memory is still 140.5 MB. Free memory was 103.6 MB in the beginning and 94.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.33 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.0 MB in the beginning and 182.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 233.97 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 170.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1430.28 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 170.2 MB in the beginning and 177.2 MB in the end (delta: -6.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 14]: Loop Invariant Derived loop invariant: ((sn == 0 && 2 * i <= sn + 2) && sn + 2 <= 2 * i) || ((2 * i <= sn + 2 && sn + 2 <= 2 * i) && sn < 2 * n + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 6 SDslu, 111 SDs, 0 SdLazy, 87 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 63 HoareAnnotationTreeSize, 10 FomulaSimplifications, 62 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 2972 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/5 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...