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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:41,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:41,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:41,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:25:41,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:25:41,585 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:41,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:41,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:41,586 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:41,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:41,587 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:41,587 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:41,587 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:41,588 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:41,588 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:41,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:41,589 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:41,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:41,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:41,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:41,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:41,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:41,590 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:41,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:41,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:41,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:41,591 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:41,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:41,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:41,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:41,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:41,592 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:41,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:41,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:41,592 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:41,620 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:41,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:41,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:41,638 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:41,638 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:41,639 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2019-09-20 13:25:41,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3b39863b/e38ce30563914398824f4151e4ba79a2/FLAG0b2c950ed [2019-09-20 13:25:42,124 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:42,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2019-09-20 13:25:42,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3b39863b/e38ce30563914398824f4151e4ba79a2/FLAG0b2c950ed [2019-09-20 13:25:42,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3b39863b/e38ce30563914398824f4151e4ba79a2 [2019-09-20 13:25:42,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:42,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:42,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:42,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:42,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:42,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:42" (1/1) ... [2019-09-20 13:25:42,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e84e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:42, skipping insertion in model container [2019-09-20 13:25:42,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:42" (1/1) ... [2019-09-20 13:25:42,562 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:42,582 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:42,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:42,796 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:42,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:42,840 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:42,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:42 WrapperNode [2019-09-20 13:25:42,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:42,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:42,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:42,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:42,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:42" (1/1) ... [2019-09-20 13:25:42,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:42" (1/1) ... [2019-09-20 13:25:42,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:42" (1/1) ... [2019-09-20 13:25:42,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:42" (1/1) ... [2019-09-20 13:25:42,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:42" (1/1) ... [2019-09-20 13:25:42,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:42" (1/1) ... [2019-09-20 13:25:42,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:42" (1/1) ... [2019-09-20 13:25:42,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:42,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:42,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:42,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:42,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:42" (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 [2019-09-20 13:25:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:25:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:25:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:25:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:43,237 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:43,238 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-20 13:25:43,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:43 BoogieIcfgContainer [2019-09-20 13:25:43,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:43,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:43,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:43,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:43,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:42" (1/3) ... [2019-09-20 13:25:43,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c1e09e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:43, skipping insertion in model container [2019-09-20 13:25:43,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:42" (2/3) ... [2019-09-20 13:25:43,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c1e09e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:43, skipping insertion in model container [2019-09-20 13:25:43,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:43" (3/3) ... [2019-09-20 13:25:43,247 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2019-09-20 13:25:43,256 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:43,263 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:25:43,279 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:25:43,306 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:43,306 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:43,306 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:43,306 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:43,307 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:43,307 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:43,307 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:43,307 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-09-20 13:25:43,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 13:25:43,331 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:43,332 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:43,334 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:43,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:43,340 INFO L82 PathProgramCache]: Analyzing trace with hash 576145336, now seen corresponding path program 1 times [2019-09-20 13:25:43,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:43,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:43,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:43,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:43,388 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:43,462 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:43,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:25:43,462 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:43,466 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:25:43,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:25:43,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:25:43,481 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-09-20 13:25:43,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:43,495 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2019-09-20 13:25:43,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:25:43,496 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-09-20 13:25:43,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:43,506 INFO L225 Difference]: With dead ends: 25 [2019-09-20 13:25:43,506 INFO L226 Difference]: Without dead ends: 20 [2019-09-20 13:25:43,508 INFO L636 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 [2019-09-20 13:25:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-20 13:25:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-09-20 13:25:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-20 13:25:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-09-20 13:25:43,542 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2019-09-20 13:25:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:43,543 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-09-20 13:25:43,543 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:25:43,543 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-09-20 13:25:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 13:25:43,544 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:43,544 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:43,545 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:43,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:43,545 INFO L82 PathProgramCache]: Analyzing trace with hash 893444581, now seen corresponding path program 1 times [2019-09-20 13:25:43,545 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:43,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:43,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:43,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:43,548 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:43,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:43,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:25:43,631 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:43,633 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:25:43,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:25:43,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:25:43,634 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2019-09-20 13:25:43,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:43,717 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-09-20 13:25:43,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:25:43,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-20 13:25:43,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:43,718 INFO L225 Difference]: With dead ends: 23 [2019-09-20 13:25:43,719 INFO L226 Difference]: Without dead ends: 21 [2019-09-20 13:25:43,720 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:25:43,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-20 13:25:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-20 13:25:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-20 13:25:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-09-20 13:25:43,726 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2019-09-20 13:25:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:43,726 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-09-20 13:25:43,726 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:25:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-09-20 13:25:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-20 13:25:43,728 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:43,728 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:43,729 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:43,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:43,729 INFO L82 PathProgramCache]: Analyzing trace with hash -884671747, now seen corresponding path program 1 times [2019-09-20 13:25:43,730 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:43,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:43,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:43,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:43,732 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:43,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:43,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:43,884 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:43,885 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2019-09-20 13:25:43,887 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [21], [24], [36], [45], [53], [56], [58], [64], [65], [66], [68] [2019-09-20 13:25:43,920 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:25:43,921 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:25:44,014 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:25:44,016 INFO L272 AbstractInterpreter]: Visited 16 different actions 20 times. Merged at 3 different actions 3 times. Never widened. Performed 41 root evaluator evaluations with a maximum evaluation depth of 5. Performed 41 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2019-09-20 13:25:44,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:44,020 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-20 13:25:44,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:44,021 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:25:44,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:44,042 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:25:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:44,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-20 13:25:44,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:25:44,122 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:44,165 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:25:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:44,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-20 13:25:44,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2019-09-20 13:25:44,246 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:25:44,247 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:25:44,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:25:44,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:25:44,251 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 10 states. [2019-09-20 13:25:44,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:44,408 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2019-09-20 13:25:44,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:25:44,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-09-20 13:25:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:44,411 INFO L225 Difference]: With dead ends: 39 [2019-09-20 13:25:44,411 INFO L226 Difference]: Without dead ends: 39 [2019-09-20 13:25:44,412 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:25:44,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-20 13:25:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2019-09-20 13:25:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-20 13:25:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-09-20 13:25:44,422 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2019-09-20 13:25:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:44,423 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-09-20 13:25:44,423 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:25:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-09-20 13:25:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:25:44,424 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:44,424 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:44,425 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:44,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:44,425 INFO L82 PathProgramCache]: Analyzing trace with hash 213378718, now seen corresponding path program 1 times [2019-09-20 13:25:44,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:44,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:44,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:44,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:44,428 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:44,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:44,546 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:44,547 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-09-20 13:25:44,547 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [21], [26], [29], [36], [45], [53], [56], [58], [64], [65], [66], [68] [2019-09-20 13:25:44,550 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:25:44,550 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:25:44,583 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:25:44,584 INFO L272 AbstractInterpreter]: Visited 17 different actions 21 times. Merged at 3 different actions 3 times. Never widened. Performed 42 root evaluator evaluations with a maximum evaluation depth of 5. Performed 42 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2019-09-20 13:25:44,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:44,584 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-20 13:25:44,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:44,584 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:25:44,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:44,609 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:25:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:44,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-20 13:25:44,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:25:44,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:44,682 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:25:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:44,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-20 13:25:44,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2019-09-20 13:25:44,738 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:25:44,738 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:25:44,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:25:44,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:25:44,739 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 10 states. [2019-09-20 13:25:44,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:44,851 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2019-09-20 13:25:44,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:25:44,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-09-20 13:25:44,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:44,854 INFO L225 Difference]: With dead ends: 49 [2019-09-20 13:25:44,854 INFO L226 Difference]: Without dead ends: 49 [2019-09-20 13:25:44,855 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:25:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-09-20 13:25:44,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2019-09-20 13:25:44,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-20 13:25:44,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2019-09-20 13:25:44,861 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 17 [2019-09-20 13:25:44,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:44,862 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2019-09-20 13:25:44,862 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:25:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2019-09-20 13:25:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:25:44,863 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:44,863 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:44,863 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:44,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:44,864 INFO L82 PathProgramCache]: Analyzing trace with hash -595967908, now seen corresponding path program 1 times [2019-09-20 13:25:44,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:44,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:44,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:44,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:44,866 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:44,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:44,931 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:44,931 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-09-20 13:25:44,932 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [21], [26], [31], [36], [45], [53], [56], [58], [64], [65], [66], [68] [2019-09-20 13:25:44,933 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:25:44,933 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:25:44,962 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:25:44,962 INFO L272 AbstractInterpreter]: Visited 17 different actions 21 times. Merged at 3 different actions 3 times. Never widened. Performed 43 root evaluator evaluations with a maximum evaluation depth of 5. Performed 43 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2019-09-20 13:25:44,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:44,963 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-20 13:25:44,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:44,963 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:25:44,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:44,987 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:25:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:45,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-20 13:25:45,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:25:45,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:45,067 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:25:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:45,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-20 13:25:45,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2019-09-20 13:25:45,127 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:25:45,128 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:25:45,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:25:45,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:25:45,130 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 10 states. [2019-09-20 13:25:45,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:45,238 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-09-20 13:25:45,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:25:45,238 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-09-20 13:25:45,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:45,240 INFO L225 Difference]: With dead ends: 53 [2019-09-20 13:25:45,240 INFO L226 Difference]: Without dead ends: 53 [2019-09-20 13:25:45,240 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:25:45,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-09-20 13:25:45,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2019-09-20 13:25:45,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-20 13:25:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2019-09-20 13:25:45,258 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 17 [2019-09-20 13:25:45,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:45,259 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2019-09-20 13:25:45,259 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:25:45,259 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2019-09-20 13:25:45,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-20 13:25:45,261 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:45,261 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:45,262 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:45,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1650045878, now seen corresponding path program 1 times [2019-09-20 13:25:45,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:45,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:45,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:45,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:45,265 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:45,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:45,425 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:45,425 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2019-09-20 13:25:45,426 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [21], [24], [26], [29], [36], [45], [53], [56], [58], [64], [65], [66], [68] [2019-09-20 13:25:45,427 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:25:45,428 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:25:45,446 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:25:45,446 INFO L272 AbstractInterpreter]: Visited 18 different actions 30 times. Merged at 5 different actions 7 times. Never widened. Performed 61 root evaluator evaluations with a maximum evaluation depth of 5. Performed 61 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 2 fixpoints after 1 different actions. Largest state had 17 variables. [2019-09-20 13:25:45,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:45,446 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-20 13:25:45,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:45,447 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:25:45,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:45,467 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:25:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:45,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-20 13:25:45,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:25:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:45,540 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:25:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:45,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:25:45,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 15 [2019-09-20 13:25:45,592 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:45,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:25:45,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:25:45,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:25:45,594 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand 5 states. [2019-09-20 13:25:45,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:45,616 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-09-20 13:25:45,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:25:45,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-20 13:25:45,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:45,617 INFO L225 Difference]: With dead ends: 29 [2019-09-20 13:25:45,617 INFO L226 Difference]: Without dead ends: 29 [2019-09-20 13:25:45,618 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:25:45,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-20 13:25:45,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-09-20 13:25:45,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-20 13:25:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-09-20 13:25:45,624 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2019-09-20 13:25:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:45,629 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-09-20 13:25:45,629 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:25:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-09-20 13:25:45,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-20 13:25:45,630 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:45,631 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:45,631 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:45,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:45,632 INFO L82 PathProgramCache]: Analyzing trace with hash -785465255, now seen corresponding path program 1 times [2019-09-20 13:25:45,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:45,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:45,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:45,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:45,634 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:25:45,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:45,744 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:45,744 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-09-20 13:25:45,744 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [21], [24], [36], [45], [47], [53], [56], [58], [61], [63], [64], [65], [66], [68], [69] [2019-09-20 13:25:45,746 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:25:45,746 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:25:45,781 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:25:45,781 INFO L272 AbstractInterpreter]: Visited 20 different actions 43 times. Merged at 6 different actions 10 times. Never widened. Performed 78 root evaluator evaluations with a maximum evaluation depth of 6. Performed 78 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 2 fixpoints after 2 different actions. Largest state had 19 variables. [2019-09-20 13:25:45,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:45,782 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-20 13:25:45,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:45,782 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:25:45,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:45,803 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:25:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:45,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-20 13:25:45,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:25:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:45,903 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:25:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:45,953 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:25:45,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10] total 15 [2019-09-20 13:25:45,954 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:45,955 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:25:45,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:25:45,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:25:45,956 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2019-09-20 13:25:45,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:45,983 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-09-20 13:25:45,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:25:45,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-09-20 13:25:45,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:45,984 INFO L225 Difference]: With dead ends: 20 [2019-09-20 13:25:45,984 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:25:45,985 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:25:45,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:25:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:25:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:25:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:25:45,986 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-20 13:25:45,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:45,987 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:25:45,987 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:25:45,987 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:25:45,987 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:25:45,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:45 BoogieIcfgContainer [2019-09-20 13:25:45,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:45,998 INFO L168 Benchmark]: Toolchain (without parser) took 3450.17 ms. Allocated memory was 134.2 MB in the beginning and 260.6 MB in the end (delta: 126.4 MB). Free memory was 89.6 MB in the beginning and 192.2 MB in the end (delta: -102.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:45,999 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 134.2 MB. Free memory is still 108.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:25:46,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.80 ms. Allocated memory is still 134.2 MB. Free memory was 89.6 MB in the beginning and 79.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:46,003 INFO L168 Benchmark]: Boogie Preprocessor took 150.75 ms. Allocated memory was 134.2 MB in the beginning and 197.7 MB in the end (delta: 63.4 MB). Free memory was 79.6 MB in the beginning and 173.6 MB in the end (delta: -94.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:46,005 INFO L168 Benchmark]: RCFGBuilder took 246.39 ms. Allocated memory is still 197.7 MB. Free memory was 173.6 MB in the beginning and 160.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:46,012 INFO L168 Benchmark]: TraceAbstraction took 2754.89 ms. Allocated memory was 197.7 MB in the beginning and 260.6 MB in the end (delta: 62.9 MB). Free memory was 159.4 MB in the beginning and 192.2 MB in the end (delta: -32.8 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:46,018 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 134.2 MB. Free memory is still 108.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.80 ms. Allocated memory is still 134.2 MB. Free memory was 89.6 MB in the beginning and 79.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.75 ms. Allocated memory was 134.2 MB in the beginning and 197.7 MB in the end (delta: 63.4 MB). Free memory was 79.6 MB in the beginning and 173.6 MB in the end (delta: -94.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 246.39 ms. Allocated memory is still 197.7 MB. Free memory was 173.6 MB in the beginning and 160.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2754.89 ms. Allocated memory was 197.7 MB in the beginning and 260.6 MB in the end (delta: 62.9 MB). Free memory was 159.4 MB in the beginning and 192.2 MB in the end (delta: -32.8 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. * 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 168 SDtfs, 125 SDslu, 439 SDs, 0 SdLazy, 242 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 13561 SizeOfPredicates, 13 NumberOfNonLiveVariables, 344 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 22/39 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...