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/nla-digbench/sqrt1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 13:23:56,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 13:23:56,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 13:23:56,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-05 13:23:56,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 13:23:56,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 13:23:56,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 13:23:56,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 13:23:56,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 13:23:56,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 13:23:56,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 13:23:56,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 13:23:56,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 13:23:56,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 13:23:56,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 13:23:56,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 13:23:56,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 13:23:56,955 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 [2019-09-05 13:23:56,970 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 13:23:56,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 13:23:56,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 13:23:56,970 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 13:23:56,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 13:23:56,971 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 13:23:56,971 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 13:23:56,972 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 13:23:56,972 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 13:23:56,972 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 13:23:56,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 13:23:56,973 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 13:23:56,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 13:23:56,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 13:23:56,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 13:23:56,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 13:23:56,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 13:23:56,974 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 13:23:56,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 13:23:56,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 13:23:56,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 13:23:56,975 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 13:23:56,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 13:23:56,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 13:23:56,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 13:23:56,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 13:23:56,976 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 13:23:56,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 13:23:56,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 13:23:56,976 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 13:23:57,003 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 13:23:57,015 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 13:23:57,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 13:23:57,020 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 13:23:57,020 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 13:23:57,021 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-09-05 13:23:57,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5654c594/9e73cb92975947379305df4469a747a2/FLAG26e2a9501 [2019-09-05 13:23:57,525 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 13:23:57,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-09-05 13:23:57,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5654c594/9e73cb92975947379305df4469a747a2/FLAG26e2a9501 [2019-09-05 13:23:57,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5654c594/9e73cb92975947379305df4469a747a2 [2019-09-05 13:23:57,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 13:23:57,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 13:23:57,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 13:23:57,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 13:23:57,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 13:23:57,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:23:57" (1/1) ... [2019-09-05 13:23:57,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16572f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:23:57, skipping insertion in model container [2019-09-05 13:23:57,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:23:57" (1/1) ... [2019-09-05 13:23:57,934 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 13:23:57,951 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 13:23:58,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:23:58,109 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 13:23:58,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:23:58,139 INFO L192 MainTranslator]: Completed translation [2019-09-05 13:23:58,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:23:58 WrapperNode [2019-09-05 13:23:58,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 13:23:58,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 13:23:58,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 13:23:58,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 13:23:58,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:23:58" (1/1) ... [2019-09-05 13:23:58,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:23:58" (1/1) ... [2019-09-05 13:23:58,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:23:58" (1/1) ... [2019-09-05 13:23:58,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:23:58" (1/1) ... [2019-09-05 13:23:58,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:23:58" (1/1) ... [2019-09-05 13:23:58,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:23:58" (1/1) ... [2019-09-05 13:23:58,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:23:58" (1/1) ... [2019-09-05 13:23:58,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 13:23:58,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 13:23:58,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 13:23:58,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 13:23:58,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:23:58" (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 [2019-09-05 13:23:58,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 13:23:58,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 13:23:58,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 13:23:58,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 13:23:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 13:23:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 13:23:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 13:23:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 13:23:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 13:23:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 13:23:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 13:23:58,498 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 13:23:58,498 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 13:23:58,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:23:58 BoogieIcfgContainer [2019-09-05 13:23:58,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 13:23:58,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 13:23:58,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 13:23:58,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 13:23:58,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 01:23:57" (1/3) ... [2019-09-05 13:23:58,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d3f826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:23:58, skipping insertion in model container [2019-09-05 13:23:58,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:23:58" (2/3) ... [2019-09-05 13:23:58,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d3f826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:23:58, skipping insertion in model container [2019-09-05 13:23:58,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:23:58" (3/3) ... [2019-09-05 13:23:58,529 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2019-09-05 13:23:58,553 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 13:23:58,566 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 13:23:58,595 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 13:23:58,631 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 13:23:58,632 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 13:23:58,632 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 13:23:58,632 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 13:23:58,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 13:23:58,632 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 13:23:58,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 13:23:58,633 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 13:23:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-05 13:23:58,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 13:23:58,655 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:23:58,656 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:23:58,658 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:23:58,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:23:58,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1435220999, now seen corresponding path program 1 times [2019-09-05 13:23:58,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:23:58,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:23:58,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:23:58,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:23:58,700 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:23:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:23:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:23:58,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:23:58,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 13:23:58,763 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:23:58,767 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 13:23:58,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 13:23:58,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 13:23:58,779 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-09-05 13:23:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:23:58,795 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2019-09-05 13:23:58,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 13:23:58,796 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-05 13:23:58,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:23:58,804 INFO L225 Difference]: With dead ends: 24 [2019-09-05 13:23:58,804 INFO L226 Difference]: Without dead ends: 19 [2019-09-05 13:23:58,806 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 [2019-09-05 13:23:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-05 13:23:58,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-05 13:23:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-05 13:23:58,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-09-05 13:23:58,842 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2019-09-05 13:23:58,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:23:58,843 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-09-05 13:23:58,843 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 13:23:58,843 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-09-05 13:23:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 13:23:58,844 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:23:58,844 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:23:58,844 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:23:58,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:23:58,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1444634955, now seen corresponding path program 1 times [2019-09-05 13:23:58,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:23:58,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:23:58,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:23:58,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:23:58,846 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:23:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:23:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:23:58,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:23:58,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 13:23:58,989 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:23:58,990 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 13:23:58,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 13:23:58,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-05 13:23:58,993 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2019-09-05 13:23:59,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:23:59,104 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-09-05 13:23:59,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-05 13:23:59,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-05 13:23:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:23:59,106 INFO L225 Difference]: With dead ends: 23 [2019-09-05 13:23:59,106 INFO L226 Difference]: Without dead ends: 23 [2019-09-05 13:23:59,107 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-05 13:23:59,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-05 13:23:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-05 13:23:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-05 13:23:59,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-09-05 13:23:59,120 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2019-09-05 13:23:59,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:23:59,120 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-09-05 13:23:59,120 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 13:23:59,120 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-09-05 13:23:59,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-05 13:23:59,121 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:23:59,121 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:23:59,121 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:23:59,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:23:59,122 INFO L82 PathProgramCache]: Analyzing trace with hash -892290774, now seen corresponding path program 1 times [2019-09-05 13:23:59,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:23:59,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:23:59,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:23:59,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:23:59,123 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:23:59,131 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:23:59,132 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:23:59,132 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 13:23:59,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:23:59,149 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:23:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:23:59,163 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2019-09-05 13:23:59,165 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [30], [33], [35], [38], [40], [41], [42], [43], [45], [46], [47] [2019-09-05 13:23:59,194 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-05 13:23:59,194 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 13:23:59,289 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-05 13:23:59,291 INFO L272 AbstractInterpreter]: Visited 14 different actions 19 times. Never merged. Never widened. Performed 17 root evaluator evaluations with a maximum evaluation depth of 7. Performed 17 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 5 variables. [2019-09-05 13:23:59,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:23:59,295 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-05 13:23:59,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:23:59,295 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 [2019-09-05 13:23:59,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:23:59,319 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:23:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:23:59,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-05 13:23:59,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:23:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:23:59,448 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:23:59,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:23:59,539 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:23:59,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:23:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:23:59,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 13:23:59,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2019-09-05 13:23:59,596 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-05 13:23:59,597 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-05 13:23:59,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-05 13:23:59,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-09-05 13:23:59,598 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 12 states. [2019-09-05 13:23:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:23:59,804 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2019-09-05 13:23:59,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-05 13:23:59,805 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2019-09-05 13:23:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:23:59,808 INFO L225 Difference]: With dead ends: 41 [2019-09-05 13:23:59,808 INFO L226 Difference]: Without dead ends: 38 [2019-09-05 13:23:59,821 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-09-05 13:23:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-05 13:23:59,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-09-05 13:23:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-05 13:23:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-09-05 13:23:59,832 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2019-09-05 13:23:59,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:23:59,833 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-09-05 13:23:59,834 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-05 13:23:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-09-05 13:23:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-05 13:23:59,836 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:23:59,837 INFO L399 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:23:59,837 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:23:59,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:23:59,838 INFO L82 PathProgramCache]: Analyzing trace with hash -2078000632, now seen corresponding path program 1 times [2019-09-05 13:23:59,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:23:59,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:23:59,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:23:59,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:23:59,842 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:23:59,856 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:23:59,856 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:23:59,856 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 13:23:59,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:23:59,884 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:23:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:23:59,898 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2019-09-05 13:23:59,898 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [21], [30], [33], [35], [38], [40], [41], [42], [43], [45], [46], [47], [48], [49], [50] [2019-09-05 13:23:59,900 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-05 13:23:59,901 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 13:24:00,302 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-05 13:24:00,304 INFO L272 AbstractInterpreter]: Visited 18 different actions 166 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 218 root evaluator evaluations with a maximum evaluation depth of 10. Performed 218 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2019-09-05 13:24:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:24:00,304 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-05 13:24:00,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:24:00,305 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) [2019-09-05 13:24:00,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:24:00,329 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:24:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:24:00,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-05 13:24:00,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:24:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-09-05 13:24:00,437 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:24:00,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:24:00,551 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:24:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-09-05 13:24:00,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 13:24:00,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-09-05 13:24:00,597 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-05 13:24:00,598 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-05 13:24:00,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-05 13:24:00,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-09-05 13:24:00,600 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 13 states. [2019-09-05 13:24:00,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:24:00,840 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2019-09-05 13:24:00,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-05 13:24:00,842 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2019-09-05 13:24:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:24:00,842 INFO L225 Difference]: With dead ends: 46 [2019-09-05 13:24:00,843 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 13:24:00,844 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-09-05 13:24:00,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 13:24:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 13:24:00,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 13:24:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 13:24:00,845 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-09-05 13:24:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:24:00,845 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 13:24:00,846 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-05 13:24:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 13:24:00,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 13:24:00,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 01:24:00 BoogieIcfgContainer [2019-09-05 13:24:00,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 13:24:00,857 INFO L168 Benchmark]: Toolchain (without parser) took 2936.92 ms. Allocated memory was 138.9 MB in the beginning and 221.2 MB in the end (delta: 82.3 MB). Free memory was 85.5 MB in the beginning and 75.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 92.8 MB. Max. memory is 7.1 GB. [2019-09-05 13:24:00,858 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 13:24:00,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.22 ms. Allocated memory is still 138.9 MB. Free memory was 85.3 MB in the beginning and 75.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-05 13:24:00,862 INFO L168 Benchmark]: Boogie Preprocessor took 108.78 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 75.8 MB in the beginning and 176.7 MB in the end (delta: -100.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-05 13:24:00,863 INFO L168 Benchmark]: RCFGBuilder took 252.70 ms. Allocated memory is still 199.2 MB. Free memory was 176.7 MB in the beginning and 165.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-09-05 13:24:00,864 INFO L168 Benchmark]: TraceAbstraction took 2349.86 ms. Allocated memory was 199.2 MB in the beginning and 221.2 MB in the end (delta: 22.0 MB). Free memory was 165.0 MB in the beginning and 75.0 MB in the end (delta: 90.1 MB). Peak memory consumption was 112.1 MB. Max. memory is 7.1 GB. [2019-09-05 13:24:00,873 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 220.22 ms. Allocated memory is still 138.9 MB. Free memory was 85.3 MB in the beginning and 75.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.78 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 75.8 MB in the beginning and 176.7 MB in the end (delta: -100.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 252.70 ms. Allocated memory is still 199.2 MB. Free memory was 176.7 MB in the beginning and 165.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2349.86 ms. Allocated memory was 199.2 MB in the beginning and 221.2 MB in the end (delta: 22.0 MB). Free memory was 165.0 MB in the beginning and 75.0 MB in the end (delta: 90.1 MB). Peak memory consumption was 112.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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, 24 locations, 1 error locations. SAFE Result, 2.2s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 79 SDtfs, 47 SDslu, 186 SDs, 0 SdLazy, 265 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 13882 SizeOfPredicates, 8 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 80/112 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...