/usr/bin/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loops/terminator_02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:36:01,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:36:01,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:36:01,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 00:36:01,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:36:01,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:36:01,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:36:01,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:36:01,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:36:01,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:36:01,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:36:01,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:36:01,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:36:01,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:36:01,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:36:01,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:36:01,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:36:01,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:36:01,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:36:01,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:36:01,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:36:01,156 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:36:01,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:36:01,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:36:01,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:36:01,161 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:36:01,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:36:01,161 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:36:01,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:36:01,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:36:01,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:36:01,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:36:01,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:36:01,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:36:01,163 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:36:01,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:36:01,163 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:36:01,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:36:01,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:36:01,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:36:01,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:36:01,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:36:01,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:36:01,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:36:01,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:36:01,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:36:01,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:36:01,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:36:01,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:36:01,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:36:01,456 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:36:01,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:36:01,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:36:01,480 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:36:01,480 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:36:01,481 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c [2019-11-07 00:36:01,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2736ef6a/4123dd8eb58f40d2973ade25f9e0a6ab/FLAG7b4c315b6 [2019-11-07 00:36:01,997 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:36:01,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c [2019-11-07 00:36:02,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2736ef6a/4123dd8eb58f40d2973ade25f9e0a6ab/FLAG7b4c315b6 [2019-11-07 00:36:02,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2736ef6a/4123dd8eb58f40d2973ade25f9e0a6ab [2019-11-07 00:36:02,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:36:02,423 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:36:02,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:02,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:36:02,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:36:02,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:02" (1/1) ... [2019-11-07 00:36:02,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d04c9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:02, skipping insertion in model container [2019-11-07 00:36:02,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:02" (1/1) ... [2019-11-07 00:36:02,438 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:36:02,455 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:36:02,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:02,665 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:36:02,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:02,692 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:36:02,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:02 WrapperNode [2019-11-07 00:36:02,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:02,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:36:02,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:36:02,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:36:02,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:02" (1/1) ... [2019-11-07 00:36:02,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:02" (1/1) ... [2019-11-07 00:36:02,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:02" (1/1) ... [2019-11-07 00:36:02,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:02" (1/1) ... [2019-11-07 00:36:02,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:02" (1/1) ... [2019-11-07 00:36:02,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:02" (1/1) ... [2019-11-07 00:36:02,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:02" (1/1) ... [2019-11-07 00:36:02,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:36:02,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:36:02,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:36:02,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:36:02,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:02" (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 [2019-11-07 00:36:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:36:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:36:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 00:36:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:36:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:36:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 00:36:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:36:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:36:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-07 00:36:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:36:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:36:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:36:03,079 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:36:03,079 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 00:36:03,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:03 BoogieIcfgContainer [2019-11-07 00:36:03,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:36:03,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:36:03,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:36:03,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:36:03,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:36:02" (1/3) ... [2019-11-07 00:36:03,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dce5d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:03, skipping insertion in model container [2019-11-07 00:36:03,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:02" (2/3) ... [2019-11-07 00:36:03,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dce5d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:03, skipping insertion in model container [2019-11-07 00:36:03,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:03" (3/3) ... [2019-11-07 00:36:03,107 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2019-11-07 00:36:03,119 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:36:03,128 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:36:03,141 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:36:03,176 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:36:03,176 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:36:03,177 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:36:03,177 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:36:03,177 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:36:03,177 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:36:03,177 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:36:03,177 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:36:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-07 00:36:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-07 00:36:03,200 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:03,201 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:03,203 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:03,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:03,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2111920953, now seen corresponding path program 1 times [2019-11-07 00:36:03,214 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:03,215 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987056441] [2019-11-07 00:36:03,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:03,316 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987056441] [2019-11-07 00:36:03,316 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:03,317 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:36:03,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642584748] [2019-11-07 00:36:03,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:36:03,323 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:03,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:36:03,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:36:03,336 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-11-07 00:36:03,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:03,353 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2019-11-07 00:36:03,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:36:03,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-11-07 00:36:03,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:03,363 INFO L225 Difference]: With dead ends: 35 [2019-11-07 00:36:03,363 INFO L226 Difference]: Without dead ends: 16 [2019-11-07 00:36:03,366 INFO L630 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 [2019-11-07 00:36:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-07 00:36:03,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-07 00:36:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-07 00:36:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-07 00:36:03,399 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-11-07 00:36:03,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:03,400 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-07 00:36:03,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:36:03,400 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-07 00:36:03,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-07 00:36:03,401 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:03,401 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:03,401 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:03,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:03,402 INFO L82 PathProgramCache]: Analyzing trace with hash 2102685743, now seen corresponding path program 1 times [2019-11-07 00:36:03,402 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:03,403 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331127285] [2019-11-07 00:36:03,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:03,552 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331127285] [2019-11-07 00:36:03,552 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:03,552 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:36:03,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558296714] [2019-11-07 00:36:03,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:36:03,557 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:03,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:36:03,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:36:03,558 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2019-11-07 00:36:03,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:03,669 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-11-07 00:36:03,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:36:03,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-07 00:36:03,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:03,671 INFO L225 Difference]: With dead ends: 22 [2019-11-07 00:36:03,671 INFO L226 Difference]: Without dead ends: 17 [2019-11-07 00:36:03,672 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:36:03,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-07 00:36:03,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-07 00:36:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-07 00:36:03,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-11-07 00:36:03,680 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2019-11-07 00:36:03,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:03,680 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-11-07 00:36:03,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:36:03,681 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-11-07 00:36:03,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 00:36:03,681 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:03,682 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:03,682 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:03,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:03,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1145559190, now seen corresponding path program 1 times [2019-11-07 00:36:03,683 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:03,683 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621475863] [2019-11-07 00:36:03,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:03,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:36:03,773 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621475863] [2019-11-07 00:36:03,773 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:03,774 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:36:03,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184057079] [2019-11-07 00:36:03,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:36:03,776 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:03,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:36:03,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:36:03,776 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2019-11-07 00:36:03,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:03,822 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-11-07 00:36:03,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:36:03,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-07 00:36:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:03,823 INFO L225 Difference]: With dead ends: 17 [2019-11-07 00:36:03,823 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:36:03,824 INFO L630 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 [2019-11-07 00:36:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:36:03,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:36:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:36:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:36:03,825 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-11-07 00:36:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:03,825 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:36:03,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:36:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:36:03,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:36:03,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:36:03,858 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 00:36:03,858 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:03,858 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:03,859 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:36:03,859 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:36:03,859 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:36:03,859 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 13 35) no Hoare annotation was computed. [2019-11-07 00:36:03,859 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-07 00:36:03,860 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 30) the Hoare annotation is: (or (< 99 main_~x~0) (<= main_~z~0 100)) [2019-11-07 00:36:03,860 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-07 00:36:03,860 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 13 35) no Hoare annotation was computed. [2019-11-07 00:36:03,860 INFO L443 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2019-11-07 00:36:03,860 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 13 35) the Hoare annotation is: true [2019-11-07 00:36:03,861 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2019-11-07 00:36:03,861 INFO L446 ceAbstractionStarter]: At program point L24-2(lines 21 30) the Hoare annotation is: true [2019-11-07 00:36:03,861 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-11-07 00:36:03,861 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-07 00:36:03,861 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2019-11-07 00:36:03,862 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2019-11-07 00:36:03,862 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-07 00:36:03,862 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-07 00:36:03,862 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-07 00:36:03,862 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2019-11-07 00:36:03,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:36:03 BoogieIcfgContainer [2019-11-07 00:36:03,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:36:03,873 INFO L168 Benchmark]: Toolchain (without parser) took 1449.16 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 105.1 MB in the beginning and 125.2 MB in the end (delta: -20.1 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:03,874 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 147.3 MB. Free memory was 123.7 MB in the beginning and 123.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:36:03,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.00 ms. Allocated memory is still 147.3 MB. Free memory was 104.7 MB in the beginning and 95.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:03,876 INFO L168 Benchmark]: Boogie Preprocessor took 134.56 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 95.3 MB in the beginning and 182.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:03,877 INFO L168 Benchmark]: RCFGBuilder took 253.10 ms. Allocated memory is still 205.0 MB. Free memory was 182.8 MB in the beginning and 170.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:03,877 INFO L168 Benchmark]: TraceAbstraction took 779.36 ms. Allocated memory is still 205.0 MB. Free memory was 169.9 MB in the beginning and 125.2 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:03,881 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 147.3 MB. Free memory was 123.7 MB in the beginning and 123.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.00 ms. Allocated memory is still 147.3 MB. Free memory was 104.7 MB in the beginning and 95.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.56 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 95.3 MB in the beginning and 182.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 253.10 ms. Allocated memory is still 205.0 MB. Free memory was 182.8 MB in the beginning and 170.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 779.36 ms. Allocated memory is still 205.0 MB. Free memory was 169.9 MB in the beginning and 125.2 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 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 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 5 SDslu, 71 SDs, 0 SdLazy, 40 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 13 HoareAnnotationTreeSize, 9 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s 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, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...