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/eca-rers2012/Problem14_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 18:17:31,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 18:17:31,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 18:17:31,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 18:17:31,995 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 [2019-09-09 18:17:32,010 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 18:17:32,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 18:17:32,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 18:17:32,011 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 18:17:32,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 18:17:32,012 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 18:17:32,012 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 18:17:32,012 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 18:17:32,012 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 18:17:32,013 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 18:17:32,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 18:17:32,015 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 18:17:32,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 18:17:32,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 18:17:32,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 18:17:32,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 18:17:32,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 18:17:32,017 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 18:17:32,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 18:17:32,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 18:17:32,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 18:17:32,017 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 18:17:32,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 18:17:32,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 18:17:32,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 18:17:32,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 18:17:32,018 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 18:17:32,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 18:17:32,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 18:17:32,019 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 18:17:32,075 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 18:17:32,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 18:17:32,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 18:17:32,093 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 18:17:32,093 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 18:17:32,094 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2019-09-09 18:17:32,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ab00c53/145a376bedac45b58f37ebf1d4492685/FLAG895c8e9b8 [2019-09-09 18:17:32,769 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 18:17:32,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2019-09-09 18:17:32,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ab00c53/145a376bedac45b58f37ebf1d4492685/FLAG895c8e9b8 [2019-09-09 18:17:33,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ab00c53/145a376bedac45b58f37ebf1d4492685 [2019-09-09 18:17:33,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 18:17:33,048 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 18:17:33,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 18:17:33,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 18:17:33,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 18:17:33,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:17:33" (1/1) ... [2019-09-09 18:17:33,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c68dd03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:17:33, skipping insertion in model container [2019-09-09 18:17:33,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:17:33" (1/1) ... [2019-09-09 18:17:33,065 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 18:17:33,115 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 18:17:33,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 18:17:33,705 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 18:17:33,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 18:17:33,863 INFO L192 MainTranslator]: Completed translation [2019-09-09 18:17:33,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:17:33 WrapperNode [2019-09-09 18:17:33,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 18:17:33,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 18:17:33,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 18:17:33,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 18:17:33,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:17:33" (1/1) ... [2019-09-09 18:17:33,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:17:33" (1/1) ... [2019-09-09 18:17:33,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:17:33" (1/1) ... [2019-09-09 18:17:33,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:17:33" (1/1) ... [2019-09-09 18:17:33,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:17:33" (1/1) ... [2019-09-09 18:17:33,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:17:33" (1/1) ... [2019-09-09 18:17:34,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:17:33" (1/1) ... [2019-09-09 18:17:34,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 18:17:34,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 18:17:34,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 18:17:34,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 18:17:34,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:17:33" (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 [2019-09-09 18:17:34,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 18:17:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 18:17:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 18:17:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 18:17:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 18:17:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 18:17:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 18:17:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 18:17:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 18:17:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 18:17:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 18:17:35,771 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 18:17:35,772 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 18:17:35,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:17:35 BoogieIcfgContainer [2019-09-09 18:17:35,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 18:17:35,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 18:17:35,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 18:17:35,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 18:17:35,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:17:33" (1/3) ... [2019-09-09 18:17:35,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4ce3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:17:35, skipping insertion in model container [2019-09-09 18:17:35,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:17:33" (2/3) ... [2019-09-09 18:17:35,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4ce3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:17:35, skipping insertion in model container [2019-09-09 18:17:35,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:17:35" (3/3) ... [2019-09-09 18:17:35,782 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2019-09-09 18:17:35,792 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 18:17:35,801 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 18:17:35,819 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 18:17:35,848 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 18:17:35,848 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 18:17:35,849 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 18:17:35,849 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 18:17:35,849 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 18:17:35,849 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 18:17:35,849 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 18:17:35,850 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 18:17:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2019-09-09 18:17:35,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-09 18:17:35,900 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:17:35,901 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 18:17:35,903 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:17:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:17:35,908 INFO L82 PathProgramCache]: Analyzing trace with hash 2061919546, now seen corresponding path program 1 times [2019-09-09 18:17:35,910 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:17:35,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:17:35,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:17:35,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:17:35,960 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:17:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:17:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:17:36,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:17:36,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 18:17:36,360 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:17:36,367 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 18:17:36,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 18:17:36,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:17:36,387 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 4 states. [2019-09-09 18:17:38,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:17:38,479 INFO L93 Difference]: Finished difference Result 642 states and 895 transitions. [2019-09-09 18:17:38,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 18:17:38,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2019-09-09 18:17:38,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:17:38,515 INFO L225 Difference]: With dead ends: 642 [2019-09-09 18:17:38,516 INFO L226 Difference]: Without dead ends: 554 [2019-09-09 18:17:38,519 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:17:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-09-09 18:17:38,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2019-09-09 18:17:38,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-09-09 18:17:38,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 776 transitions. [2019-09-09 18:17:38,621 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 776 transitions. Word has length 49 [2019-09-09 18:17:38,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:17:38,622 INFO L475 AbstractCegarLoop]: Abstraction has 554 states and 776 transitions. [2019-09-09 18:17:38,622 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 18:17:38,622 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 776 transitions. [2019-09-09 18:17:38,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-09-09 18:17:38,631 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:17:38,632 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 18:17:38,632 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:17:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:17:38,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2076137238, now seen corresponding path program 1 times [2019-09-09 18:17:38,633 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:17:38,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:17:38,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:17:38,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:17:38,635 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:17:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:17:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:17:38,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:17:38,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 18:17:38,799 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:17:38,801 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 18:17:38,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 18:17:38,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:17:38,802 INFO L87 Difference]: Start difference. First operand 554 states and 776 transitions. Second operand 4 states. [2019-09-09 18:17:40,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:17:40,481 INFO L93 Difference]: Finished difference Result 1646 states and 2199 transitions. [2019-09-09 18:17:40,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 18:17:40,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-09-09 18:17:40,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:17:40,494 INFO L225 Difference]: With dead ends: 1646 [2019-09-09 18:17:40,494 INFO L226 Difference]: Without dead ends: 1646 [2019-09-09 18:17:40,495 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:17:40,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2019-09-09 18:17:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1646. [2019-09-09 18:17:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2019-09-09 18:17:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2199 transitions. [2019-09-09 18:17:40,557 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2199 transitions. Word has length 161 [2019-09-09 18:17:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:17:40,559 INFO L475 AbstractCegarLoop]: Abstraction has 1646 states and 2199 transitions. [2019-09-09 18:17:40,559 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 18:17:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2199 transitions. [2019-09-09 18:17:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-09-09 18:17:40,566 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:17:40,566 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 18:17:40,567 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:17:40,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:17:40,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1900097298, now seen corresponding path program 1 times [2019-09-09 18:17:40,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:17:40,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:17:40,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:17:40,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:17:40,569 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:17:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:17:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:17:40,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:17:40,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 18:17:40,833 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:17:40,836 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 18:17:40,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 18:17:40,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:17:40,838 INFO L87 Difference]: Start difference. First operand 1646 states and 2199 transitions. Second operand 4 states. [2019-09-09 18:17:42,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:17:42,487 INFO L93 Difference]: Finished difference Result 3282 states and 4432 transitions. [2019-09-09 18:17:42,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 18:17:42,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2019-09-09 18:17:42,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:17:42,490 INFO L225 Difference]: With dead ends: 3282 [2019-09-09 18:17:42,491 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 18:17:42,491 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:17:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 18:17:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 18:17:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 18:17:42,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 18:17:42,495 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 179 [2019-09-09 18:17:42,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:17:42,495 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 18:17:42,495 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 18:17:42,496 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 18:17:42,496 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 18:17:42,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 06:17:42 BoogieIcfgContainer [2019-09-09 18:17:42,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 18:17:42,512 INFO L168 Benchmark]: Toolchain (without parser) took 9461.95 ms. Allocated memory was 133.7 MB in the beginning and 363.9 MB in the end (delta: 230.2 MB). Free memory was 87.5 MB in the beginning and 293.1 MB in the end (delta: -205.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2019-09-09 18:17:42,514 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 133.7 MB. Free memory was 108.3 MB in the beginning and 108.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 18:17:42,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 815.27 ms. Allocated memory was 133.7 MB in the beginning and 201.3 MB in the end (delta: 67.6 MB). Free memory was 87.3 MB in the beginning and 151.1 MB in the end (delta: -63.8 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2019-09-09 18:17:42,518 INFO L168 Benchmark]: Boogie Preprocessor took 149.45 ms. Allocated memory is still 201.3 MB. Free memory was 151.1 MB in the beginning and 146.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2019-09-09 18:17:42,520 INFO L168 Benchmark]: RCFGBuilder took 1759.07 ms. Allocated memory was 201.3 MB in the beginning and 227.0 MB in the end (delta: 25.7 MB). Free memory was 146.0 MB in the beginning and 141.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 75.1 MB. Max. memory is 7.1 GB. [2019-09-09 18:17:42,521 INFO L168 Benchmark]: TraceAbstraction took 6733.26 ms. Allocated memory was 227.0 MB in the beginning and 363.9 MB in the end (delta: 136.8 MB). Free memory was 141.0 MB in the beginning and 293.1 MB in the end (delta: -152.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-09 18:17:42,531 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 133.7 MB. Free memory was 108.3 MB in the beginning and 108.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 815.27 ms. Allocated memory was 133.7 MB in the beginning and 201.3 MB in the end (delta: 67.6 MB). Free memory was 87.3 MB in the beginning and 151.1 MB in the end (delta: -63.8 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.45 ms. Allocated memory is still 201.3 MB. Free memory was 151.1 MB in the beginning and 146.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1759.07 ms. Allocated memory was 201.3 MB in the beginning and 227.0 MB in the end (delta: 25.7 MB). Free memory was 146.0 MB in the beginning and 141.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 75.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6733.26 ms. Allocated memory was 227.0 MB in the beginning and 363.9 MB in the end (delta: 136.8 MB). Free memory was 141.0 MB in the beginning and 293.1 MB in the end (delta: -152.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 133]: 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, 254 locations, 1 error locations. SAFE Result, 6.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 5.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 420 SDtfs, 1093 SDslu, 75 SDs, 0 SdLazy, 3055 SolverSat, 824 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1646occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 105194 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 84/84 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...