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 0.1.24-112bae1 [2019-09-10 02:04:55,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:04:55,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:04:55,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 02:04:55,277 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 [2019-09-10 02:04:55,304 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:04:55,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:04:55,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:04:55,306 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:04:55,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:04:55,307 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:04:55,307 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:04:55,307 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:04:55,307 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:04:55,307 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:04:55,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:04:55,309 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:04:55,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:04:55,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:04:55,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:04:55,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:04:55,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:04:55,311 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:04:55,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:04:55,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:04:55,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:04:55,312 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:04:55,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:04:55,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:04:55,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:04:55,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:04:55,313 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:04:55,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:04:55,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:04:55,313 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:04:55,360 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:04:55,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:04:55,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:04:55,380 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:04:55,382 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:04:55,382 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2019-09-10 02:04:55,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/651385e23/f6f451903ae64527bea8d533b264b033/FLAG15a9f3fe7 [2019-09-10 02:04:55,891 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:04:55,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2019-09-10 02:04:55,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/651385e23/f6f451903ae64527bea8d533b264b033/FLAG15a9f3fe7 [2019-09-10 02:04:56,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/651385e23/f6f451903ae64527bea8d533b264b033 [2019-09-10 02:04:56,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:04:56,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:04:56,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:04:56,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:04:56,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:04:56,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:04:56" (1/1) ... [2019-09-10 02:04:56,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635b5632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:04:56, skipping insertion in model container [2019-09-10 02:04:56,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:04:56" (1/1) ... [2019-09-10 02:04:56,306 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:04:56,323 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:04:56,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:04:56,482 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:04:56,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:04:56,515 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:04:56,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:04:56 WrapperNode [2019-09-10 02:04:56,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:04:56,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:04:56,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:04:56,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:04:56,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:04:56" (1/1) ... [2019-09-10 02:04:56,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:04:56" (1/1) ... [2019-09-10 02:04:56,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:04:56" (1/1) ... [2019-09-10 02:04:56,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:04:56" (1/1) ... [2019-09-10 02:04:56,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:04:56" (1/1) ... [2019-09-10 02:04:56,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:04:56" (1/1) ... [2019-09-10 02:04:56,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:04:56" (1/1) ... [2019-09-10 02:04:56,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:04:56,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:04:56,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:04:56,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:04:56,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:04:56" (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 [2019-09-10 02:04:56,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:04:56,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:04:56,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 02:04:56,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:04:56,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:04:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 02:04:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 02:04:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:04:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:04:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:04:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:04:56,925 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:04:56,925 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-10 02:04:56,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:04:56 BoogieIcfgContainer [2019-09-10 02:04:56,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:04:56,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:04:56,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:04:56,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:04:56,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:04:56" (1/3) ... [2019-09-10 02:04:56,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653913ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:04:56, skipping insertion in model container [2019-09-10 02:04:56,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:04:56" (2/3) ... [2019-09-10 02:04:56,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653913ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:04:56, skipping insertion in model container [2019-09-10 02:04:56,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:04:56" (3/3) ... [2019-09-10 02:04:56,944 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2019-09-10 02:04:56,954 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:04:56,961 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:04:56,982 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:04:57,003 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:04:57,004 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:04:57,004 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:04:57,004 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:04:57,004 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:04:57,004 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:04:57,004 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:04:57,005 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:04:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-09-10 02:04:57,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 02:04:57,026 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:04:57,027 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:04:57,029 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:04:57,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:04:57,034 INFO L82 PathProgramCache]: Analyzing trace with hash 576145336, now seen corresponding path program 1 times [2019-09-10 02:04:57,036 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:04:57,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:57,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:04:57,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:57,072 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:04:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:04:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:57,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:04:57,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:04:57,139 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:04:57,142 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:04:57,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:04:57,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:04:57,154 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-09-10 02:04:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:04:57,168 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2019-09-10 02:04:57,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:04:57,169 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-09-10 02:04:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:04:57,181 INFO L225 Difference]: With dead ends: 25 [2019-09-10 02:04:57,181 INFO L226 Difference]: Without dead ends: 20 [2019-09-10 02:04:57,183 INFO L628 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 [2019-09-10 02:04:57,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-10 02:04:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-09-10 02:04:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-10 02:04:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-09-10 02:04:57,220 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2019-09-10 02:04:57,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:04:57,221 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-09-10 02:04:57,221 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:04:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-09-10 02:04:57,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 02:04:57,222 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:04:57,222 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:04:57,222 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:04:57,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:04:57,223 INFO L82 PathProgramCache]: Analyzing trace with hash 893444581, now seen corresponding path program 1 times [2019-09-10 02:04:57,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:04:57,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:57,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:04:57,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:57,225 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:04:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:04:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:57,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:04:57,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:04:57,347 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:04:57,349 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:04:57,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:04:57,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:04:57,350 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2019-09-10 02:04:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:04:57,454 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-09-10 02:04:57,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:04:57,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-10 02:04:57,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:04:57,457 INFO L225 Difference]: With dead ends: 23 [2019-09-10 02:04:57,457 INFO L226 Difference]: Without dead ends: 21 [2019-09-10 02:04:57,459 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:04:57,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-10 02:04:57,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-10 02:04:57,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-10 02:04:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-09-10 02:04:57,467 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2019-09-10 02:04:57,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:04:57,469 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-09-10 02:04:57,469 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:04:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-09-10 02:04:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 02:04:57,470 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:04:57,470 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:04:57,471 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:04:57,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:04:57,471 INFO L82 PathProgramCache]: Analyzing trace with hash -884671747, now seen corresponding path program 1 times [2019-09-10 02:04:57,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:04:57,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:57,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:04:57,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:57,476 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:04:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:04:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:57,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:04:57,597 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:04:57,598 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2019-09-10 02:04:57,599 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [21], [24], [36], [45], [53], [56], [58], [64], [65], [66], [68] [2019-09-10 02:04:57,637 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:04:57,637 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:04:57,747 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:04:57,749 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. [2019-09-10 02:04:57,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:04:57,753 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:04:57,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:04:57,753 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 [2019-09-10 02:04:57,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:04:57,769 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 02:04:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:04:57,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-10 02:04:57,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:04:57,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 02:04:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:57,885 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:04:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:57,953 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 02:04:57,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2019-09-10 02:04:57,954 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 02:04:57,954 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 02:04:57,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 02:04:57,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:04:57,956 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 10 states. [2019-09-10 02:04:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:04:58,108 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2019-09-10 02:04:58,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:04:58,109 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-09-10 02:04:58,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:04:58,111 INFO L225 Difference]: With dead ends: 39 [2019-09-10 02:04:58,111 INFO L226 Difference]: Without dead ends: 39 [2019-09-10 02:04:58,113 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-09-10 02:04:58,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-10 02:04:58,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2019-09-10 02:04:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-10 02:04:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-09-10 02:04:58,133 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2019-09-10 02:04:58,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:04:58,134 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-09-10 02:04:58,134 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 02:04:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-09-10 02:04:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 02:04:58,137 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:04:58,137 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:04:58,137 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:04:58,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:04:58,138 INFO L82 PathProgramCache]: Analyzing trace with hash 213378718, now seen corresponding path program 1 times [2019-09-10 02:04:58,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:04:58,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:58,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:04:58,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:58,140 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:04:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:04:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:58,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:04:58,272 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:04:58,272 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-09-10 02:04:58,273 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [21], [26], [29], [36], [45], [53], [56], [58], [64], [65], [66], [68] [2019-09-10 02:04:58,275 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:04:58,275 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:04:58,295 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:04:58,295 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. [2019-09-10 02:04:58,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:04:58,296 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:04:58,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:04:58,296 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 [2019-09-10 02:04:58,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:04:58,320 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 02:04:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:04:58,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-10 02:04:58,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:04:58,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 02:04:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:58,389 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:04:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:58,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 02:04:58,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2019-09-10 02:04:58,443 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 02:04:58,444 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 02:04:58,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 02:04:58,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:04:58,445 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 10 states. [2019-09-10 02:04:58,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:04:58,557 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2019-09-10 02:04:58,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:04:58,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-09-10 02:04:58,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:04:58,561 INFO L225 Difference]: With dead ends: 49 [2019-09-10 02:04:58,561 INFO L226 Difference]: Without dead ends: 49 [2019-09-10 02:04:58,562 INFO L628 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 [2019-09-10 02:04:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-09-10 02:04:58,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2019-09-10 02:04:58,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-10 02:04:58,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2019-09-10 02:04:58,568 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 17 [2019-09-10 02:04:58,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:04:58,569 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2019-09-10 02:04:58,569 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 02:04:58,569 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2019-09-10 02:04:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 02:04:58,570 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:04:58,570 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:04:58,571 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:04:58,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:04:58,571 INFO L82 PathProgramCache]: Analyzing trace with hash -595967908, now seen corresponding path program 1 times [2019-09-10 02:04:58,571 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:04:58,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:58,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:04:58,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:58,573 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:04:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:04:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:58,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:04:58,646 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:04:58,646 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-09-10 02:04:58,646 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [21], [26], [31], [36], [45], [53], [56], [58], [64], [65], [66], [68] [2019-09-10 02:04:58,648 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:04:58,649 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:04:58,691 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:04:58,691 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. [2019-09-10 02:04:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:04:58,692 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:04:58,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:04:58,693 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 [2019-09-10 02:04:58,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:04:58,709 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 02:04:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:04:58,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-10 02:04:58,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:04:58,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 02:04:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:58,782 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:04:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:58,839 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 02:04:58,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2019-09-10 02:04:58,839 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 02:04:58,840 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 02:04:58,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 02:04:58,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:04:58,842 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 10 states. [2019-09-10 02:04:58,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:04:58,957 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-09-10 02:04:58,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:04:58,957 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-09-10 02:04:58,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:04:58,958 INFO L225 Difference]: With dead ends: 53 [2019-09-10 02:04:58,958 INFO L226 Difference]: Without dead ends: 53 [2019-09-10 02:04:58,959 INFO L628 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 [2019-09-10 02:04:58,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-09-10 02:04:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2019-09-10 02:04:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-10 02:04:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2019-09-10 02:04:58,965 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 17 [2019-09-10 02:04:58,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:04:58,965 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2019-09-10 02:04:58,966 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 02:04:58,966 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2019-09-10 02:04:58,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 02:04:58,967 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:04:58,967 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:04:58,967 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:04:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:04:58,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1650045878, now seen corresponding path program 1 times [2019-09-10 02:04:58,968 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:04:58,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:58,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:04:58,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:58,969 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:04:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:04:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:59,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:04:59,007 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:04:59,007 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2019-09-10 02:04:59,008 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [21], [24], [26], [29], [36], [45], [53], [56], [58], [64], [65], [66], [68] [2019-09-10 02:04:59,011 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:04:59,012 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:04:59,047 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:04:59,048 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. [2019-09-10 02:04:59,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:04:59,051 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:04:59,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:04:59,052 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 [2019-09-10 02:04:59,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:04:59,070 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 02:04:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:04:59,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-10 02:04:59,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:04:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:59,102 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:04:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:59,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-09-10 02:04:59,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2019-09-10 02:04:59,129 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:04:59,130 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:04:59,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:04:59,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:04:59,130 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand 5 states. [2019-09-10 02:04:59,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:04:59,145 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-09-10 02:04:59,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:04:59,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-10 02:04:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:04:59,146 INFO L225 Difference]: With dead ends: 29 [2019-09-10 02:04:59,147 INFO L226 Difference]: Without dead ends: 29 [2019-09-10 02:04:59,147 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:04:59,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-10 02:04:59,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-09-10 02:04:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-10 02:04:59,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-09-10 02:04:59,151 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2019-09-10 02:04:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:04:59,151 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-09-10 02:04:59,152 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:04:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-09-10 02:04:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-10 02:04:59,152 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:04:59,153 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:04:59,153 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:04:59,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:04:59,153 INFO L82 PathProgramCache]: Analyzing trace with hash -785465255, now seen corresponding path program 1 times [2019-09-10 02:04:59,153 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:04:59,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:59,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:04:59,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:04:59,155 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:04:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:04:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:59,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:04:59,238 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:04:59,238 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-09-10 02:04:59,239 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [21], [24], [36], [45], [47], [53], [56], [58], [61], [63], [64], [65], [66], [68], [69] [2019-09-10 02:04:59,241 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:04:59,241 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:04:59,307 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:04:59,307 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. [2019-09-10 02:04:59,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:04:59,308 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:04:59,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:04:59,309 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) [2019-09-10 02:04:59,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:04:59,323 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 02:04:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:04:59,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-10 02:04:59,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:04:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:59,400 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:04:59,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:04:59,446 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:04:59,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8] total 13 [2019-09-10 02:04:59,447 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:04:59,447 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:04:59,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:04:59,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:04:59,448 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2019-09-10 02:04:59,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:04:59,473 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-09-10 02:04:59,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:04:59,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-09-10 02:04:59,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:04:59,488 INFO L225 Difference]: With dead ends: 20 [2019-09-10 02:04:59,488 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:04:59,489 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:04:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:04:59,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:04:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:04:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:04:59,491 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-10 02:04:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:04:59,492 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:04:59,492 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:04:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:04:59,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:04:59,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:04:59 BoogieIcfgContainer [2019-09-10 02:04:59,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:04:59,510 INFO L168 Benchmark]: Toolchain (without parser) took 3218.09 ms. Allocated memory was 134.2 MB in the beginning and 257.4 MB in the end (delta: 123.2 MB). Free memory was 90.2 MB in the beginning and 227.4 MB in the end (delta: -137.3 MB). Peak memory consumption was 112.3 MB. Max. memory is 7.1 GB. [2019-09-10 02:04:59,513 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 134.2 MB. Free memory was 108.8 MB in the beginning and 108.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:04:59,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.11 ms. Allocated memory is still 134.2 MB. Free memory was 90.0 MB in the beginning and 80.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-10 02:04:59,516 INFO L168 Benchmark]: Boogie Preprocessor took 111.05 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 80.4 MB in the beginning and 177.3 MB in the end (delta: -96.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-10 02:04:59,517 INFO L168 Benchmark]: RCFGBuilder took 299.44 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 163.0 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:04:59,518 INFO L168 Benchmark]: TraceAbstraction took 2577.89 ms. Allocated memory was 200.8 MB in the beginning and 257.4 MB in the end (delta: 56.6 MB). Free memory was 163.0 MB in the beginning and 227.4 MB in the end (delta: -64.4 MB). Peak memory consumption was 118.5 MB. Max. memory is 7.1 GB. [2019-09-10 02:04:59,527 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 134.2 MB. Free memory was 108.8 MB in the beginning and 108.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 224.11 ms. Allocated memory is still 134.2 MB. Free memory was 90.0 MB in the beginning and 80.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.05 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 80.4 MB in the beginning and 177.3 MB in the end (delta: -96.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 299.44 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 163.0 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2577.89 ms. Allocated memory was 200.8 MB in the beginning and 257.4 MB in the end (delta: 56.6 MB). Free memory was 163.0 MB in the beginning and 227.4 MB in the end (delta: -64.4 MB). Peak memory consumption was 118.5 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, 2.5s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 168 SDtfs, 134 SDslu, 425 SDs, 0 SdLazy, 240 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 169 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s 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, 0.3s 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, 0.9s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 12146 SizeOfPredicates, 13 NumberOfNonLiveVariables, 344 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 25/39 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...