/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loop-new/gauss_sum.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:35:10,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:35:10,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:35:10,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:35:10,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:35:10,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:35:10,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:35:10,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:35:10,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:35:10,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:35:10,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:35:10,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:35:10,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:35:10,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:35:10,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:35:10,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:35:10,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:35:10,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:35:10,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:35:10,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:35:10,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:35:10,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:35:10,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:35:10,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:35:10,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:35:10,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:35:11,004 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:35:11,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:35:11,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:35:11,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:35:11,005 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:35:11,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:35:11,006 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:35:11,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:35:11,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:35:11,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:35:11,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:35:11,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:35:11,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:35:11,007 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:35:11,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:35:11,008 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:35:11,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:35:11,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:35:11,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:35:11,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:35:11,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:35:11,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:35:11,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:35:11,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:35:11,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:35:11,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:35:11,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:35:11,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:35:11,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:35:11,279 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:35:11,296 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:35:11,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:35:11,301 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:35:11,302 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:35:11,302 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i [2019-11-07 00:35:11,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d160cabe/264c9325d6ef4249b5f2c088f1157cb4/FLAGbcd4dc3e3 [2019-11-07 00:35:11,826 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:35:11,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i [2019-11-07 00:35:11,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d160cabe/264c9325d6ef4249b5f2c088f1157cb4/FLAGbcd4dc3e3 [2019-11-07 00:35:12,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d160cabe/264c9325d6ef4249b5f2c088f1157cb4 [2019-11-07 00:35:12,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:35:12,262 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:35:12,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:35:12,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:35:12,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:35:12,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:35:12" (1/1) ... [2019-11-07 00:35:12,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cac5ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:12, skipping insertion in model container [2019-11-07 00:35:12,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:35:12" (1/1) ... [2019-11-07 00:35:12,299 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:35:12,342 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:35:12,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:35:12,696 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:35:12,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:35:12,722 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:35:12,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:12 WrapperNode [2019-11-07 00:35:12,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:35:12,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:35:12,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:35:12,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:35:12,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:12" (1/1) ... [2019-11-07 00:35:12,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:12" (1/1) ... [2019-11-07 00:35:12,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:12" (1/1) ... [2019-11-07 00:35:12,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:12" (1/1) ... [2019-11-07 00:35:12,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:12" (1/1) ... [2019-11-07 00:35:12,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:12" (1/1) ... [2019-11-07 00:35:12,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:12" (1/1) ... [2019-11-07 00:35:12,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:35:12,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:35:12,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:35:12,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:35:12,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:35:12,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:35:12,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:35:12,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 00:35:12,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:35:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:35:12,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 00:35:12,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:35:12,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:35:12,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:35:12,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:35:12,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:35:13,051 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:35:13,052 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 00:35:13,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:35:13 BoogieIcfgContainer [2019-11-07 00:35:13,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:35:13,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:35:13,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:35:13,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:35:13,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:35:12" (1/3) ... [2019-11-07 00:35:13,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ffd28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:35:13, skipping insertion in model container [2019-11-07 00:35:13,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:12" (2/3) ... [2019-11-07 00:35:13,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ffd28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:35:13, skipping insertion in model container [2019-11-07 00:35:13,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:35:13" (3/3) ... [2019-11-07 00:35:13,066 INFO L109 eAbstractionObserver]: Analyzing ICFG gauss_sum.i [2019-11-07 00:35:13,093 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:35:13,102 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:35:13,118 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:35:13,144 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:35:13,145 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:35:13,145 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:35:13,145 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:35:13,145 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:35:13,145 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:35:13,146 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:35:13,146 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:35:13,165 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-07 00:35:13,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 00:35:13,170 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:13,170 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:13,172 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:13,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1281911547, now seen corresponding path program 1 times [2019-11-07 00:35:13,184 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:13,184 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487793261] [2019-11-07 00:35:13,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:13,278 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487793261] [2019-11-07 00:35:13,279 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:35:13,279 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:35:13,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579945223] [2019-11-07 00:35:13,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:35:13,286 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:13,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:35:13,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:35:13,300 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-07 00:35:13,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:13,322 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-07 00:35:13,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:35:13,324 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-07 00:35:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:13,336 INFO L225 Difference]: With dead ends: 32 [2019-11-07 00:35:13,336 INFO L226 Difference]: Without dead ends: 13 [2019-11-07 00:35:13,342 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:35:13,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-07 00:35:13,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-07 00:35:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-07 00:35:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-07 00:35:13,397 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-11-07 00:35:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:13,398 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-07 00:35:13,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:35:13,399 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-07 00:35:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 00:35:13,401 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:13,402 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:13,402 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:13,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:13,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1287452673, now seen corresponding path program 1 times [2019-11-07 00:35:13,404 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:13,404 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507351413] [2019-11-07 00:35:13,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:13,427 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:35:13,428 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100923937] [2019-11-07 00:35:13,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2019-11-07 00:35:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:13,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 00:35:13,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:35:13,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:13,582 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:35:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:13,619 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507351413] [2019-11-07 00:35:13,621 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:35:13,621 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100923937] [2019-11-07 00:35:13,621 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:35:13,621 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-07 00:35:13,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331127285] [2019-11-07 00:35:13,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:35:13,624 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:13,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:35:13,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:35:13,626 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2019-11-07 00:35:13,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:13,662 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-07 00:35:13,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:35:13,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-07 00:35:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:13,665 INFO L225 Difference]: With dead ends: 20 [2019-11-07 00:35:13,665 INFO L226 Difference]: Without dead ends: 15 [2019-11-07 00:35:13,666 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:35:13,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-07 00:35:13,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-07 00:35:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-07 00:35:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-07 00:35:13,672 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2019-11-07 00:35:13,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:13,672 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-07 00:35:13,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:35:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-07 00:35:13,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 00:35:13,673 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:13,673 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:13,878 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:13,879 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:13,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:13,881 INFO L82 PathProgramCache]: Analyzing trace with hash 843923389, now seen corresponding path program 1 times [2019-11-07 00:35:13,882 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:13,886 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482266737] [2019-11-07 00:35:13,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:13,940 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:35:13,940 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352147712] [2019-11-07 00:35:13,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:14,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-07 00:35:14,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:35:14,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:35:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:14,198 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:35:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:14,467 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482266737] [2019-11-07 00:35:14,467 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:35:14,467 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352147712] [2019-11-07 00:35:14,467 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [820796020] [2019-11-07 00:35:14,476 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 14 [2019-11-07 00:35:14,546 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:35:14,547 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:35:14,667 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-11-07 00:35:14,670 INFO L272 AbstractInterpreter]: Visited 13 different actions 44 times. Merged at 3 different actions 14 times. Widened at 1 different actions 3 times. Performed 72 root evaluator evaluations with a maximum evaluation depth of 6. Performed 72 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2019-11-07 00:35:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:14,674 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:35:14,674 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:35:14,674 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-11-07 00:35:14,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771382456] [2019-11-07 00:35:14,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:35:14,675 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:14,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:35:14,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:35:14,676 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states. [2019-11-07 00:35:14,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:14,914 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-11-07 00:35:14,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:35:14,915 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2019-11-07 00:35:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:14,915 INFO L225 Difference]: With dead ends: 21 [2019-11-07 00:35:14,916 INFO L226 Difference]: Without dead ends: 16 [2019-11-07 00:35:14,916 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:35:14,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-07 00:35:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-07 00:35:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-07 00:35:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-07 00:35:14,921 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2019-11-07 00:35:14,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:14,921 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-07 00:35:14,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:35:14,922 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-07 00:35:14,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-07 00:35:14,922 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:14,922 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:15,123 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:15,124 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:15,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:15,125 INFO L82 PathProgramCache]: Analyzing trace with hash 396918779, now seen corresponding path program 2 times [2019-11-07 00:35:15,125 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:15,125 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41376600] [2019-11-07 00:35:15,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:15,141 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:35:15,141 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526403073] [2019-11-07 00:35:15,145 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:15,198 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-07 00:35:15,198 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:35:15,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-07 00:35:15,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:35:15,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:35:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:15,293 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:35:17,122 WARN L860 $PredicateComparison]: unable to prove that (forall ((main_~n~0 Int)) (let ((.cse0 (+ c_main_~i~0 1))) (or (< .cse0 main_~n~0) (= (* main_~n~0 (+ main_~n~0 1)) (+ (* 2 c_main_~i~0) (* 2 c_main_~sum~0) 2)) (< main_~n~0 .cse0)))) is different from true [2019-11-07 00:35:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2019-11-07 00:35:17,597 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41376600] [2019-11-07 00:35:17,597 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:35:17,597 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526403073] [2019-11-07 00:35:17,598 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1390549213] [2019-11-07 00:35:17,598 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-11-07 00:35:17,598 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-11-07 00:35:17,598 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:35:17,598 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2019-11-07 00:35:17,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942224465] [2019-11-07 00:35:17,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-07 00:35:17,599 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:17,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-07 00:35:17,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=198, Unknown=1, NotChecked=28, Total=272 [2019-11-07 00:35:17,600 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 17 states. [2019-11-07 00:35:17,871 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((main_~n~0 Int)) (let ((.cse0 (+ c_main_~i~0 1))) (or (< .cse0 main_~n~0) (= (* main_~n~0 (+ main_~n~0 1)) (+ (* 2 c_main_~i~0) (* 2 c_main_~sum~0) 2)) (< main_~n~0 .cse0)))) (or (< c_main_~i~0 c_main_~n~0) (= (* c_main_~n~0 (+ c_main_~n~0 1)) (* 2 c_main_~sum~0)))) is different from true [2019-11-07 00:35:17,976 WARN L860 $PredicateComparison]: unable to prove that (and (or (<= c_main_~i~0 c_main_~n~0) (= (* c_main_~n~0 (+ c_main_~n~0 1)) (* 2 c_main_~sum~0))) (forall ((main_~n~0 Int)) (or (< c_main_~i~0 main_~n~0) (= (* main_~n~0 (+ main_~n~0 1)) (+ (* 2 c_main_~i~0) (* 2 c_main_~sum~0))) (< main_~n~0 c_main_~i~0)))) is different from true [2019-11-07 00:35:18,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:18,034 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-07 00:35:18,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 00:35:18,035 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2019-11-07 00:35:18,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:18,035 INFO L225 Difference]: With dead ends: 19 [2019-11-07 00:35:18,035 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:35:18,036 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=84, Invalid=386, Unknown=4, NotChecked=126, Total=600 [2019-11-07 00:35:18,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:35:18,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:35:18,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:35:18,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:35:18,037 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-11-07 00:35:18,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:18,037 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:35:18,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-07 00:35:18,038 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:35:18,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:35:18,240 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:18,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:35:18,531 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 19 [2019-11-07 00:35:18,535 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 00:35:18,535 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:35:18,535 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:35:18,535 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:35:18,535 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:35:18,535 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:35:18,535 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2019-11-07 00:35:18,536 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2019-11-07 00:35:18,536 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-07 00:35:18,536 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-07 00:35:18,536 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2019-11-07 00:35:18,536 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2019-11-07 00:35:18,536 INFO L439 ceAbstractionStarter]: At program point L15-3(lines 15 17) the Hoare annotation is: (and (or (<= main_~i~0 main_~n~0) (= (* main_~n~0 (+ main_~n~0 1)) (* 2 main_~sum~0))) (forall ((main_~n~0 Int)) (or (< main_~i~0 main_~n~0) (= (* main_~n~0 (+ main_~n~0 1)) (+ (* 2 main_~i~0) (* 2 main_~sum~0))) (< main_~n~0 main_~i~0)))) [2019-11-07 00:35:18,536 INFO L439 ceAbstractionStarter]: At program point L15-4(lines 15 17) the Hoare annotation is: (= (* main_~n~0 (+ main_~n~0 1)) (* 2 main_~sum~0)) [2019-11-07 00:35:18,536 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-07 00:35:18,537 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-07 00:35:18,537 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-07 00:35:18,537 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-07 00:35:18,537 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-07 00:35:18,537 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-07 00:35:18,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,544 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,544 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,544 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,550 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,550 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,551 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,551 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:35:18 BoogieIcfgContainer [2019-11-07 00:35:18,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:35:18,555 INFO L168 Benchmark]: Toolchain (without parser) took 6296.06 ms. Allocated memory was 136.8 MB in the beginning and 230.2 MB in the end (delta: 93.3 MB). Free memory was 100.4 MB in the beginning and 122.2 MB in the end (delta: -21.8 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:18,556 INFO L168 Benchmark]: CDTParser took 1.27 ms. Allocated memory is still 136.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:35:18,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 458.13 ms. Allocated memory is still 136.8 MB. Free memory was 99.9 MB in the beginning and 90.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:18,558 INFO L168 Benchmark]: Boogie Preprocessor took 99.57 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 178.1 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:18,559 INFO L168 Benchmark]: RCFGBuilder took 230.99 ms. Allocated memory is still 199.8 MB. Free memory was 178.1 MB in the beginning and 166.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:18,560 INFO L168 Benchmark]: TraceAbstraction took 5498.62 ms. Allocated memory was 199.8 MB in the beginning and 230.2 MB in the end (delta: 30.4 MB). Free memory was 166.7 MB in the beginning and 122.2 MB in the end (delta: 44.5 MB). Peak memory consumption was 74.9 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:18,565 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.27 ms. Allocated memory is still 136.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 458.13 ms. Allocated memory is still 136.8 MB. Free memory was 99.9 MB in the beginning and 90.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.57 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 178.1 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.99 ms. Allocated memory is still 199.8 MB. Free memory was 178.1 MB in the beginning and 166.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5498.62 ms. Allocated memory was 199.8 MB in the beginning and 230.2 MB in the end (delta: 30.4 MB). Free memory was 166.7 MB in the beginning and 122.2 MB in the end (delta: 44.5 MB). Peak memory consumption was 74.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 15]: Loop Invariant [2019-11-07 00:35:18,575 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,575 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,575 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,575 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2019-11-07 00:35:18,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] Derived loop invariant: (i <= n || n * (n + 1) == 2 * sum) && (forall main_~n~0 : int :: (i < main_~n~0 || main_~n~0 * (main_~n~0 + 1) == 2 * i + 2 * sum) || main_~n~0 < i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 5.3s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 48 SDtfs, 8 SDslu, 132 SDs, 0 SdLazy, 143 SolverSat, 12 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.1s 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 49 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 130 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 3 QuantifiedInterpolants, 4368 SizeOfPredicates, 11 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 1/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...