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/loops/terminator_02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:12,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:12,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:12,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:25:12,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:25:12,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:25:12,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:25:12,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:25:12,139 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:12,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:12,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:12,139 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:12,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:12,140 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:12,140 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:12,141 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:12,141 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:12,141 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:12,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:12,142 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:12,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:12,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:12,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:12,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:12,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:12,143 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:12,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:12,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:12,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:12,144 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:12,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:12,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:12,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:12,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:12,145 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:12,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:12,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:12,146 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:12,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:12,195 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:12,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:12,202 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:12,209 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:12,211 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c [2019-09-20 13:25:12,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2564cf7/f0275753159c458895f90b2e4305a1ec/FLAGc021fdc84 [2019-09-20 13:25:12,772 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:12,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c [2019-09-20 13:25:12,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2564cf7/f0275753159c458895f90b2e4305a1ec/FLAGc021fdc84 [2019-09-20 13:25:13,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2564cf7/f0275753159c458895f90b2e4305a1ec [2019-09-20 13:25:13,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:13,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:13,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:13,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:13,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:13,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:13" (1/1) ... [2019-09-20 13:25:13,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3fac14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:13, skipping insertion in model container [2019-09-20 13:25:13,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:13" (1/1) ... [2019-09-20 13:25:13,131 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:13,146 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:13,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:13,328 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:13,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:13,357 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:13,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:13 WrapperNode [2019-09-20 13:25:13,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:13,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:13,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:13,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:13,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:13" (1/1) ... [2019-09-20 13:25:13,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:13" (1/1) ... [2019-09-20 13:25:13,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:13" (1/1) ... [2019-09-20 13:25:13,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:13" (1/1) ... [2019-09-20 13:25:13,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:13" (1/1) ... [2019-09-20 13:25:13,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:13" (1/1) ... [2019-09-20 13:25:13,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:13" (1/1) ... [2019-09-20 13:25:13,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:13,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:13,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:13,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:13,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:13,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:13,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:13,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:25:13,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:25:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:25:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-20 13:25:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:13,727 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:13,727 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:25:13,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:13 BoogieIcfgContainer [2019-09-20 13:25:13,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:13,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:13,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:13,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:13,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:13" (1/3) ... [2019-09-20 13:25:13,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36189262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:13, skipping insertion in model container [2019-09-20 13:25:13,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:13" (2/3) ... [2019-09-20 13:25:13,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36189262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:13, skipping insertion in model container [2019-09-20 13:25:13,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:13" (3/3) ... [2019-09-20 13:25:13,737 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2019-09-20 13:25:13,747 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:13,754 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:25:13,769 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:25:13,796 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:13,796 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:13,796 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:13,796 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:13,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:13,797 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:13,797 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:13,797 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-20 13:25:13,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-20 13:25:13,819 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:13,820 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:13,822 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:13,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:13,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2111920953, now seen corresponding path program 1 times [2019-09-20 13:25:13,829 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:13,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:13,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:13,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:13,875 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:13,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:13,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:25:13,942 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:13,946 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:25:13,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:25:13,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:25:13,959 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-09-20 13:25:13,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:13,973 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-09-20 13:25:13,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:25:13,974 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-20 13:25:13,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:13,984 INFO L225 Difference]: With dead ends: 23 [2019-09-20 13:25:13,984 INFO L226 Difference]: Without dead ends: 16 [2019-09-20 13:25:13,986 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:25:14,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-20 13:25:14,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-20 13:25:14,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-20 13:25:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-09-20 13:25:14,018 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-09-20 13:25:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:14,018 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-09-20 13:25:14,019 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:25:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-09-20 13:25:14,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-20 13:25:14,020 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:14,020 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:14,022 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:14,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:14,024 INFO L82 PathProgramCache]: Analyzing trace with hash 2102685743, now seen corresponding path program 1 times [2019-09-20 13:25:14,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:14,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:14,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:14,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:14,027 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:14,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:14,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:25:14,159 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:14,161 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:25:14,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:25:14,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:25:14,162 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2019-09-20 13:25:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:14,324 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-09-20 13:25:14,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:25:14,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-09-20 13:25:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:14,325 INFO L225 Difference]: With dead ends: 20 [2019-09-20 13:25:14,325 INFO L226 Difference]: Without dead ends: 17 [2019-09-20 13:25:14,327 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:25:14,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-20 13:25:14,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-20 13:25:14,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-20 13:25:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-09-20 13:25:14,331 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2019-09-20 13:25:14,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:14,332 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-09-20 13:25:14,332 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:25:14,332 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-09-20 13:25:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-20 13:25:14,333 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:14,333 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:14,334 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:14,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:14,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1145559190, now seen corresponding path program 1 times [2019-09-20 13:25:14,334 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:14,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:14,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:14,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:14,337 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:25:14,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:14,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:25:14,399 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:14,400 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:25:14,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:25:14,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:25:14,401 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2019-09-20 13:25:14,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:14,447 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-09-20 13:25:14,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:25:14,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-20 13:25:14,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:14,449 INFO L225 Difference]: With dead ends: 15 [2019-09-20 13:25:14,449 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:25:14,449 INFO L636 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 [2019-09-20 13:25:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:25:14,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:25:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:25:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:25:14,451 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-20 13:25:14,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:14,451 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:25:14,451 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:25:14,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:25:14,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:25:14,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:14 BoogieIcfgContainer [2019-09-20 13:25:14,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:14,461 INFO L168 Benchmark]: Toolchain (without parser) took 1346.76 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 86.7 MB in the beginning and 123.1 MB in the end (delta: -36.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:14,462 INFO L168 Benchmark]: CDTParser took 1.50 ms. Allocated memory is still 138.9 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:25:14,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.14 ms. Allocated memory is still 138.9 MB. Free memory was 86.5 MB in the beginning and 77.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:14,464 INFO L168 Benchmark]: Boogie Preprocessor took 112.13 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 77.0 MB in the beginning and 176.7 MB in the end (delta: -99.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:14,465 INFO L168 Benchmark]: RCFGBuilder took 258.72 ms. Allocated memory is still 199.2 MB. Free memory was 176.7 MB in the beginning and 164.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:14,466 INFO L168 Benchmark]: TraceAbstraction took 727.63 ms. Allocated memory is still 199.2 MB. Free memory was 163.9 MB in the beginning and 123.1 MB in the end (delta: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:14,470 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.50 ms. Allocated memory is still 138.9 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.14 ms. Allocated memory is still 138.9 MB. Free memory was 86.5 MB in the beginning and 77.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.13 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 77.0 MB in the beginning and 176.7 MB in the end (delta: -99.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 258.72 ms. Allocated memory is still 199.2 MB. Free memory was 176.7 MB in the beginning and 164.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 727.63 ms. Allocated memory is still 199.2 MB. Free memory was 163.9 MB in the beginning and 123.1 MB in the end (delta: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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, 23 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 5 SDslu, 71 SDs, 0 SdLazy, 40 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 899 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...