java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum04-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:16:51,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:16:51,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:16:51,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:16:51,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:16:51,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:16:51,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:16:51,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:16:51,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:16:51,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:16:51,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:16:51,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:16:51,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:16:51,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:16:51,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:16:51,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:16:51,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:16:51,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:16:51,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:16:51,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:16:51,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:16:51,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:16:51,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:16:51,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:16:51,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:16:51,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:16:51,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:16:51,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:16:51,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:16:51,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:16:51,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:16:51,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:16:51,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:16:51,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:16:51,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:16:51,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:16:51,625 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 [2019-10-14 23:16:51,638 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:16:51,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:16:51,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:16:51,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:16:51,640 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:16:51,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:16:51,641 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:16:51,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:16:51,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:16:51,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:16:51,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:16:51,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:16:51,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:16:51,642 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:16:51,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:16:51,642 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:16:51,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:16:51,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:16:51,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:16:51,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:16:51,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:16:51,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:16:51,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:16:51,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:16:51,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:16:51,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:16:51,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:16:51,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:16:51,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:16:51,932 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:16:51,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:16:51,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:16:51,954 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:16:51,954 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:16:51,955 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-1.i [2019-10-14 23:16:52,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83dea0970/aca2ce03156e4185b2e050d927a176c4/FLAGd36a3d3f9 [2019-10-14 23:16:52,448 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:16:52,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i [2019-10-14 23:16:52,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83dea0970/aca2ce03156e4185b2e050d927a176c4/FLAGd36a3d3f9 [2019-10-14 23:16:52,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83dea0970/aca2ce03156e4185b2e050d927a176c4 [2019-10-14 23:16:52,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:16:52,830 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:16:52,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:16:52,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:16:52,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:16:52,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:52" (1/1) ... [2019-10-14 23:16:52,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799252b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:52, skipping insertion in model container [2019-10-14 23:16:52,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:52" (1/1) ... [2019-10-14 23:16:52,846 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:16:52,861 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:16:53,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:16:53,015 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:16:53,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:16:53,048 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:16:53,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:53 WrapperNode [2019-10-14 23:16:53,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:16:53,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:16:53,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:16:53,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:16:53,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:53" (1/1) ... [2019-10-14 23:16:53,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:53" (1/1) ... [2019-10-14 23:16:53,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:53" (1/1) ... [2019-10-14 23:16:53,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:53" (1/1) ... [2019-10-14 23:16:53,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:53" (1/1) ... [2019-10-14 23:16:53,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:53" (1/1) ... [2019-10-14 23:16:53,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:53" (1/1) ... [2019-10-14 23:16:53,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:16:53,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:16:53,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:16:53,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:16:53,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:53" (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 [2019-10-14 23:16:53,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:16:53,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:16:53,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:16:53,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:16:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:16:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:16:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:16:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:16:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:16:53,394 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:16:53,394 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:16:53,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:53 BoogieIcfgContainer [2019-10-14 23:16:53,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:16:53,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:16:53,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:16:53,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:16:53,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:16:52" (1/3) ... [2019-10-14 23:16:53,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d6c26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:53, skipping insertion in model container [2019-10-14 23:16:53,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:53" (2/3) ... [2019-10-14 23:16:53,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d6c26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:53, skipping insertion in model container [2019-10-14 23:16:53,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:53" (3/3) ... [2019-10-14 23:16:53,403 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2019-10-14 23:16:53,411 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:16:53,417 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:16:53,425 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:16:53,448 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:16:53,448 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:16:53,448 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:16:53,449 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:16:53,451 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:16:53,451 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:16:53,451 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:16:53,451 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:16:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-14 23:16:53,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:16:53,482 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:53,483 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:53,485 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:53,491 INFO L82 PathProgramCache]: Analyzing trace with hash -721501374, now seen corresponding path program 1 times [2019-10-14 23:16:53,500 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:53,500 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834498935] [2019-10-14 23:16:53,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:53,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:53,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:53,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834498935] [2019-10-14 23:16:53,608 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:16:53,609 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:16:53,610 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533422072] [2019-10-14 23:16:53,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:16:53,615 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:53,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:16:53,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:16:53,631 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-14 23:16:53,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:53,655 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-10-14 23:16:53,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:16:53,656 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-14 23:16:53,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:53,663 INFO L225 Difference]: With dead ends: 30 [2019-10-14 23:16:53,663 INFO L226 Difference]: Without dead ends: 13 [2019-10-14 23:16:53,665 INFO L600 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 [2019-10-14 23:16:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-14 23:16:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-14 23:16:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-14 23:16:53,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-10-14 23:16:53,701 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-10-14 23:16:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:53,701 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-14 23:16:53,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:16:53,702 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-10-14 23:16:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:16:53,702 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:53,703 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:53,703 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:53,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:53,703 INFO L82 PathProgramCache]: Analyzing trace with hash -731660105, now seen corresponding path program 1 times [2019-10-14 23:16:53,704 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:53,704 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213497993] [2019-10-14 23:16:53,704 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:53,704 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:53,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:53,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213497993] [2019-10-14 23:16:53,760 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:16:53,760 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:16:53,760 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38143027] [2019-10-14 23:16:53,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:16:53,763 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:53,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:16:53,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:16:53,763 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2019-10-14 23:16:53,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:53,810 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-10-14 23:16:53,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:16:53,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-14 23:16:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:53,812 INFO L225 Difference]: With dead ends: 24 [2019-10-14 23:16:53,812 INFO L226 Difference]: Without dead ends: 16 [2019-10-14 23:16:53,814 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:16:53,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-14 23:16:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-10-14 23:16:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-14 23:16:53,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-10-14 23:16:53,819 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-10-14 23:16:53,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:53,820 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-10-14 23:16:53,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:16:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-10-14 23:16:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:16:53,833 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:53,833 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:53,833 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:53,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:53,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1637338477, now seen corresponding path program 1 times [2019-10-14 23:16:53,837 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:53,838 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682118343] [2019-10-14 23:16:53,838 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:53,838 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:53,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:53,898 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682118343] [2019-10-14 23:16:53,898 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313284694] [2019-10-14 23:16:53,899 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 [2019-10-14 23:16:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:53,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:16:53,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:53,997 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:16:53,997 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2019-10-14 23:16:53,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408237764] [2019-10-14 23:16:53,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:16:53,998 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:53,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:16:53,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:16:53,999 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2019-10-14 23:16:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:54,042 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-10-14 23:16:54,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:16:54,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-14 23:16:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:54,044 INFO L225 Difference]: With dead ends: 24 [2019-10-14 23:16:54,044 INFO L226 Difference]: Without dead ends: 19 [2019-10-14 23:16:54,044 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:16:54,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-14 23:16:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2019-10-14 23:16:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-14 23:16:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-14 23:16:54,050 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2019-10-14 23:16:54,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:54,050 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-14 23:16:54,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:16:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-14 23:16:54,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-14 23:16:54,053 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:54,053 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:54,256 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:54,257 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:54,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:54,258 INFO L82 PathProgramCache]: Analyzing trace with hash 57842105, now seen corresponding path program 1 times [2019-10-14 23:16:54,259 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:54,259 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299440579] [2019-10-14 23:16:54,259 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:54,259 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:54,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:54,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299440579] [2019-10-14 23:16:54,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449418591] [2019-10-14 23:16:54,301 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 [2019-10-14 23:16:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:54,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:16:54,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:54,351 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:54,351 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-10-14 23:16:54,352 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070653814] [2019-10-14 23:16:54,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:16:54,353 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:54,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:16:54,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:16:54,353 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2019-10-14 23:16:54,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:54,398 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2019-10-14 23:16:54,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:16:54,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-14 23:16:54,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:54,399 INFO L225 Difference]: With dead ends: 31 [2019-10-14 23:16:54,400 INFO L226 Difference]: Without dead ends: 21 [2019-10-14 23:16:54,400 INFO L600 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 [2019-10-14 23:16:54,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-14 23:16:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-10-14 23:16:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-14 23:16:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-10-14 23:16:54,406 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2019-10-14 23:16:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:54,406 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-10-14 23:16:54,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:16:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-10-14 23:16:54,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-14 23:16:54,407 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:54,408 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:54,612 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:54,617 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:54,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:54,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1350121109, now seen corresponding path program 2 times [2019-10-14 23:16:54,618 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:54,618 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789116314] [2019-10-14 23:16:54,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:54,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:54,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:54,693 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789116314] [2019-10-14 23:16:54,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795675689] [2019-10-14 23:16:54,694 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-10-14 23:16:54,728 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:16:54,728 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:16:54,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:16:54,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:54,741 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:54,742 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2019-10-14 23:16:54,742 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285297060] [2019-10-14 23:16:54,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:16:54,743 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:54,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:16:54,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:16:54,744 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2019-10-14 23:16:54,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:54,811 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2019-10-14 23:16:54,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:16:54,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-10-14 23:16:54,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:54,814 INFO L225 Difference]: With dead ends: 35 [2019-10-14 23:16:54,814 INFO L226 Difference]: Without dead ends: 25 [2019-10-14 23:16:54,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:16:54,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-14 23:16:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2019-10-14 23:16:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-14 23:16:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-10-14 23:16:54,827 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2019-10-14 23:16:54,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:54,827 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-10-14 23:16:54,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:16:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-10-14 23:16:54,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-14 23:16:54,830 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:54,831 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:55,035 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:55,035 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:55,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:55,036 INFO L82 PathProgramCache]: Analyzing trace with hash -452912071, now seen corresponding path program 3 times [2019-10-14 23:16:55,036 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:55,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117627297] [2019-10-14 23:16:55,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:55,037 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:55,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:55,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117627297] [2019-10-14 23:16:55,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277514043] [2019-10-14 23:16:55,128 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:55,160 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-14 23:16:55,161 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:16:55,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:16:55,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 23:16:55,180 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:55,180 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2019-10-14 23:16:55,180 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728309343] [2019-10-14 23:16:55,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:16:55,181 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:55,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:16:55,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:16:55,182 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2019-10-14 23:16:55,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:55,245 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-10-14 23:16:55,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:16:55,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2019-10-14 23:16:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:55,249 INFO L225 Difference]: With dead ends: 33 [2019-10-14 23:16:55,249 INFO L226 Difference]: Without dead ends: 28 [2019-10-14 23:16:55,250 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:16:55,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-14 23:16:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-10-14 23:16:55,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-14 23:16:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-10-14 23:16:55,262 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2019-10-14 23:16:55,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:55,263 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-10-14 23:16:55,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:16:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2019-10-14 23:16:55,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-14 23:16:55,264 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:55,266 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:55,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:55,469 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:55,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:55,470 INFO L82 PathProgramCache]: Analyzing trace with hash -2146400685, now seen corresponding path program 4 times [2019-10-14 23:16:55,470 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:55,471 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292381458] [2019-10-14 23:16:55,471 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:55,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:55,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:55,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292381458] [2019-10-14 23:16:55,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733680376] [2019-10-14 23:16:55,559 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:55,590 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-14 23:16:55,590 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:16:55,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:16:55,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:55,633 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:55,634 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2019-10-14 23:16:55,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87777008] [2019-10-14 23:16:55,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:16:55,635 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:55,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:16:55,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:16:55,636 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 10 states. [2019-10-14 23:16:55,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:55,701 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-10-14 23:16:55,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:16:55,703 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2019-10-14 23:16:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:55,705 INFO L225 Difference]: With dead ends: 40 [2019-10-14 23:16:55,705 INFO L226 Difference]: Without dead ends: 35 [2019-10-14 23:16:55,707 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:16:55,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-14 23:16:55,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-14 23:16:55,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-14 23:16:55,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2019-10-14 23:16:55,718 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 25 [2019-10-14 23:16:55,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:55,718 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-10-14 23:16:55,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:16:55,718 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2019-10-14 23:16:55,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-14 23:16:55,721 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:55,721 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:55,922 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:55,923 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:55,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:55,923 INFO L82 PathProgramCache]: Analyzing trace with hash 749989817, now seen corresponding path program 5 times [2019-10-14 23:16:55,923 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:55,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489489617] [2019-10-14 23:16:55,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:55,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:55,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-14 23:16:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-14 23:16:55,980 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-14 23:16:55,981 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-14 23:16:56,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:16:56 BoogieIcfgContainer [2019-10-14 23:16:56,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:16:56,005 INFO L168 Benchmark]: Toolchain (without parser) took 3174.83 ms. Allocated memory was 136.8 MB in the beginning and 230.7 MB in the end (delta: 93.8 MB). Free memory was 101.8 MB in the beginning and 167.6 MB in the end (delta: -65.9 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:56,006 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:16:56,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.69 ms. Allocated memory is still 136.8 MB. Free memory was 101.6 MB in the beginning and 92.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:56,008 INFO L168 Benchmark]: Boogie Preprocessor took 112.92 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 92.3 MB in the beginning and 180.2 MB in the end (delta: -88.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:56,009 INFO L168 Benchmark]: RCFGBuilder took 232.68 ms. Allocated memory is still 200.8 MB. Free memory was 180.2 MB in the beginning and 169.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:56,010 INFO L168 Benchmark]: TraceAbstraction took 2606.44 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 168.3 MB in the beginning and 167.6 MB in the end (delta: 678.6 kB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:56,014 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 218.69 ms. Allocated memory is still 136.8 MB. Free memory was 101.6 MB in the beginning and 92.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.92 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 92.3 MB in the beginning and 180.2 MB in the end (delta: -88.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 232.68 ms. Allocated memory is still 200.8 MB. Free memory was 180.2 MB in the beginning and 169.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2606.44 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 168.3 MB in the beginning and 167.6 MB in the end (delta: 678.6 kB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, sn=0; [L13] i=1 VAL [i=1, sn=0] [L13] COND TRUE i<=8 VAL [i=1, sn=0] [L14] COND TRUE i<4 [L15] sn = sn + (2) VAL [i=1, sn=2] [L13] i++ VAL [i=2, sn=2] [L13] COND TRUE i<=8 VAL [i=2, sn=2] [L14] COND TRUE i<4 [L15] sn = sn + (2) VAL [i=2, sn=4] [L13] i++ VAL [i=3, sn=4] [L13] COND TRUE i<=8 VAL [i=3, sn=4] [L14] COND TRUE i<4 [L15] sn = sn + (2) VAL [i=3, sn=6] [L13] i++ VAL [i=4, sn=6] [L13] COND TRUE i<=8 VAL [i=4, sn=6] [L14] COND FALSE !(i<4) VAL [i=4, sn=6] [L13] i++ VAL [i=5, sn=6] [L13] COND TRUE i<=8 VAL [i=5, sn=6] [L14] COND FALSE !(i<4) VAL [i=5, sn=6] [L13] i++ VAL [i=6, sn=6] [L13] COND TRUE i<=8 VAL [i=6, sn=6] [L14] COND FALSE !(i<4) VAL [i=6, sn=6] [L13] i++ VAL [i=7, sn=6] [L13] COND TRUE i<=8 VAL [i=7, sn=6] [L14] COND FALSE !(i<4) VAL [i=7, sn=6] [L13] i++ VAL [i=8, sn=6] [L13] COND TRUE i<=8 VAL [i=8, sn=6] [L14] COND FALSE !(i<4) VAL [i=8, sn=6] [L13] i++ VAL [i=9, sn=6] [L13] COND FALSE !(i<=8) VAL [i=9, sn=6] [L17] CALL __VERIFIER_assert(sn==8*(2) || sn == 0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.5s, OverallIterations: 8, TraceHistogramMax: 8, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 50 SDslu, 120 SDs, 0 SdLazy, 107 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=7, 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, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 244 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 6888 SizeOfPredicates, 4 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 41/150 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 incorrect! Received shutdown request...